循序渐进介绍基于CommunityToolkit.Mvvm 和HandyControl的WPF应用端开发(6)

信息宝贝

在我们窗口新增、编辑状态下的时候，我们往往会根据是否修改过的痕迹-也就是脏数据状态进行跟踪，如果用户发生了数据修改，我们在用户退出窗口的时候，提供用户是否丢弃修改还是继续编辑，这样在一些重要录入时的时候，可以避免用户不小心关掉窗口，导致窗口的数据要重新录入的尴尬场景。本篇随笔介绍基于WPF开发中，窗口控件脏数据状态IsDirty的跟踪处理操作。
 1、WPF的Page页面、Window窗口对象和视图模型

MVVM是Model-View-ViewModel的简写。类似于目前比较流行的MVC、MVP设计模式，主要目的是为了分离视图（View）和模型（Model）的耦合。
对于MVVM应用中，MVVM其中包括Model、View、ViewModel三者内容。其中Page或者Window对象，都是属于视图View的概念。由于目前我们程序框架大多数情况下采用IOC的控制反转方式来调用，因此对象和接口的注入是程序开始的重要工作。
.net 中 负责依赖注入和控制反转的核心组件有两个：IServiceCollection和IServiceProvider。其中，IServiceCollection负责注册，IServiceProvider负责提供实例。在注册接口和类时，IServiceCollection提供了三种注册方法，如下所示：

1. 1、services.AddTransient<IDictDataService, DictDataService>();  // 瞬时生命周期
2. 2、services.AddScoped<IDictDataService, DictDataService>();<Window.InputBindings>
3.     <KeyBinding
4.         Key="Esc"
5.         Command="{Binding BackCommand}"
6.         Modifiers="" />
7. </Window.InputBindings> // 域生命周期
8. 3、services.AddSingleton<IDictDataService, DictDataService>();  // 全局单例生命周期

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如果使用AddTransient方法注册，IServiceProvider每次都会通过GetService方法创建一个新的实例；
如果使用AddScoped方法注册， 在同一个域（Scope）内，IServiceProvider每次都会通过GetService方法调用同一个实例，可以理解为在局部实现了单例模式；
如果使用AddSingleton方法注册， 在整个应用程序生命周期内，IServiceProvider只会创建一个实例。
了解了这几个不同的注入方式，有助于我们了解WPF的整个注入对象的生命周期，对于页面来说，由于采用了导航的方式，我们在注入的时候，采用单例的方式，对于弹出的编辑、新增、导入、批量处理的这种常规视图，我们采用用完就丢弃的AddTransient方式，而视图模型为了方便，我们也采用单件的方式构建即可。
我们在WPF程序入口的程序代码App.xaml.cs中注入相关的对象信息。
登录窗口和主窗口，采用单件注入方式，如下代码所示。

1. // 程序导航主窗体及视图模型
2. services.AddSingleton<INavigationWindow, MainWindow>();
3. services.AddSingleton<ViewModels.MainWindowViewModel>();
4. //登录窗口
5. services.AddSingleton<LoginView, LoginView>();

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而对于我们程序的视图或者视图模型对象来做，我们不可能一一按名字插入，应该通过一种动态的方式来批量处理，也就是根据各自的接口类型/继承基类来处理即可。

1. #region 加入视图页面和视图模型
2. //使用动态方式加入
3. var types = System.Reflection.Assembly.GetExecutingAssembly().DefinedTypes.Select(type => type.AsType());
5. //视图页面对象 typeof(Page)，使用单件模式，每次请求都是一样的页面
6. var viewPageBaseType = typeof(Page);
7. var pageClasses = types.Where(x => x != viewPageBaseType && viewPageBaseType.IsAssignableFrom(x))
8. <Window.InputBindings>
9.     <KeyBinding
10.         Key="Esc"
11.         Command="{Binding BackCommand}"
12.         Modifiers="" />
13. </Window.InputBindings><Window.InputBindings>
14.     <KeyBinding
15.         Key="Esc"
16.         Command="{Binding BackCommand}"
17.         Modifiers="" />
18. </Window.InputBindings><Window.InputBindings>
19.     <KeyBinding
20.         Key="Esc"
21.         Command="{Binding BackCommand}"
22.         Modifiers="" />
23. </Window.InputBindings><Window.InputBindings>
24.     <KeyBinding
25.         Key="Esc"
26.         Command="{Binding BackCommand}"
27.         Modifiers="" />
28. </Window.InputBindings><Window.InputBindings>
29.     <KeyBinding
30.         Key="Esc"
31.         Command="{Binding BackCommand}"
32.         Modifiers="" />
33. </Window.InputBindings>  .Where(x => x.IsClass && !x.IsAbstract).ToList();
34. foreach (var page in pageClasses)
35. {
36. <Window.InputBindings>
37.     <KeyBinding
38.         Key="Esc"
39.         Command="{Binding BackCommand}"
40.         Modifiers="" />
41. </Window.InputBindings>services.AddSingleton(page);
42. }
44. //视图模型对象 typeof(ObservableObject)
45. var viewModelBaseType = typeof(ObservableObject);
46. var viewModels = types.Where(x => x != viewModelBaseType && viewModelBaseType.IsAssignableFrom(x))
47. <Window.InputBindings>
48.     <KeyBinding
49.         Key="Esc"
50.         Command="{Binding BackCommand}"
51.         Modifiers="" />
52. </Window.InputBindings><Window.InputBindings>
53.     <KeyBinding
54.         Key="Esc"
55.         Command="{Binding BackCommand}"
56.         Modifiers="" />
57. </Window.InputBindings><Window.InputBindings>
58.     <KeyBinding
59.         Key="Esc"
60.         Command="{Binding BackCommand}"
61.         Modifiers="" />
62. </Window.InputBindings><Window.InputBindings>
63.     <KeyBinding
64.         Key="Esc"
65.         Command="{Binding BackCommand}"
66.         Modifiers="" />
67. </Window.InputBindings><Window.InputBindings>
68.     <KeyBinding
69.         Key="Esc"
70.         Command="{Binding BackCommand}"
71.         Modifiers="" />
72. </Window.InputBindings>  .Where(x => x.IsClass && !x.IsAbstract).ToList();
73. foreach (var view in viewModels)
74. {
75. <Window.InputBindings>
76.     <KeyBinding
77.         Key="Esc"
78.         Command="{Binding BackCommand}"
79.         Modifiers="" />
80. </Window.InputBindings>services.AddSingleton(view);
81. }
83. //窗口对象,使用 Transient 模式，每次请求都是一个新的窗体
84. var windowBaseType = typeof(Window);
85. var windowClasses = types.Where(x => x != windowBaseType && windowBaseType.IsAssignableFrom(x))
86. <Window.InputBindings>
87.     <KeyBinding
88.         Key="Esc"
89.         Command="{Binding BackCommand}"
90.         Modifiers="" />
91. </Window.InputBindings><Window.InputBindings>
92.     <KeyBinding
93.         Key="Esc"
94.         Command="{Binding BackCommand}"
95.         Modifiers="" />
96. </Window.InputBindings><Window.InputBindings>
97.     <KeyBinding
98.         Key="Esc"
99.         Command="{Binding BackCommand}"
100.         Modifiers="" />
101. </Window.InputBindings><Window.InputBindings>
102.     <KeyBinding
103.         Key="Esc"
104.         Command="{Binding BackCommand}"
105.         Modifiers="" />
106. </Window.InputBindings><Window.InputBindings>
107.     <KeyBinding
108.         Key="Esc"
109.         Command="{Binding BackCommand}"
110.         Modifiers="" />
111. </Window.InputBindings>  .Where(x => x.IsClass && !x.IsAbstract).ToList();
112. foreach (var window in windowClasses)
113. {
114. <Window.InputBindings>
115.     <KeyBinding
116.         Key="Esc"
117.         Command="{Binding BackCommand}"
118.         Modifiers="" />
119. </Window.InputBindings>services.AddTransient(window);
120. }
121. #endregion

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以上就是普通列表页面Page类型、视图模型ViewModel、弹出式窗口的几种注入的方式，通过接口判断和基类判断的方式，自动注入相关的对象。
2、对窗口控件的修改进行跟踪

了解了上面几种对象的注入方式，我们来进一步了解弹出式窗口对象Window的控件的修改状态跟踪。
由于WPF不能像Winform那种，通过父对象的Controls集合就可以遍历出来所有的对象，然后进行一一判断，而WPF对象没有这个属性，因此也就无法直接的对控件的修改状态进行跟踪。
那是不是没有办法对窗口下面的控件进行一一判断了呢？肯定不是，办法还是有的，就是通过内置辅助类LogicalTreeHelper，或者VisualTreeHelper的方式，由于前者是所有窗口或者页面的逻辑控件都会跟踪到，后者VisualTreeHelper只是对可视化的控件进行跟踪，因此我们这里选择LogicalTreeHelper来对控件进行遍历处理。
实现的效果，就是对应窗口编辑内容发生变化，如果用户退出，提示用户即可，如下界面效果所示。

 由于窗口元素都是继承自Visual这个wpf的基类，而这个基类又是继承于DependencyObject，如下代码所示。

1. public abstract class Visual : DependencyObject

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而辅助类，可以通过GetChildren的方法获取对应的控件列表，接口如下所示。

1. IEnumerable GetChildren(DependencyObject current)

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稍微封装下对控件的递归遍历处理，代码如下所示。

1. <Window.InputBindings>
2.     <KeyBinding
3.         Key="Esc"
4.         Command="{Binding BackCommand}"
5.         Modifiers="" />
6. </Window.InputBindings><Window.InputBindings>
7.     <KeyBinding
8.         Key="Esc"
9.         Command="{Binding BackCommand}"
10.         Modifiers="" />
11. </Window.InputBindings>/// <summary>
12. <Window.InputBindings>
13.     <KeyBinding
14.         Key="Esc"
15.         Command="{Binding BackCommand}"
16.         Modifiers="" />
17. </Window.InputBindings><Window.InputBindings>
18.     <KeyBinding
19.         Key="Esc"
20.         Command="{Binding BackCommand}"
21.         Modifiers="" />
22. </Window.InputBindings>/// 使用辅助类对窗口控件进行遍历处理
23. <Window.InputBindings>
24.     <KeyBinding
25.         Key="Esc"
26.         Command="{Binding BackCommand}"
27.         Modifiers="" />
28. </Window.InputBindings><Window.InputBindings>
29.     <KeyBinding
30.         Key="Esc"
31.         Command="{Binding BackCommand}"
32.         Modifiers="" />
33. </Window.InputBindings>/// </summary>
34. <Window.InputBindings>
35.     <KeyBinding
36.         Key="Esc"
37.         Command="{Binding BackCommand}"
38.         Modifiers="" />
39. </Window.InputBindings><Window.InputBindings>
40.     <KeyBinding
41.         Key="Esc"
42.         Command="{Binding BackCommand}"
43.         Modifiers="" />
44. </Window.InputBindings>/// <typeparam name="T">控件类型</typeparam>
45. <Window.InputBindings>
46.     <KeyBinding
47.         Key="Esc"
48.         Command="{Binding BackCommand}"
49.         Modifiers="" />
50. </Window.InputBindings><Window.InputBindings>
51.     <KeyBinding
52.         Key="Esc"
53.         Command="{Binding BackCommand}"
54.         Modifiers="" />
55. </Window.InputBindings>/// <param name="depObj">父对象</param>
56. <Window.InputBindings>
57.     <KeyBinding
58.         Key="Esc"
59.         Command="{Binding BackCommand}"
60.         Modifiers="" />
61. </Window.InputBindings><Window.InputBindings>
62.     <KeyBinding
63.         Key="Esc"
64.         Command="{Binding BackCommand}"
65.         Modifiers="" />
66. </Window.InputBindings>/// <returns></returns>
67. <Window.InputBindings>
68.     <KeyBinding
69.         Key="Esc"
70.         Command="{Binding BackCommand}"
71.         Modifiers="" />
72. </Window.InputBindings><Window.InputBindings>
73.     <KeyBinding
74.         Key="Esc"
75.         Command="{Binding BackCommand}"
76.         Modifiers="" />
77. </Window.InputBindings>public static IEnumerable<T> <strong>FindLogicalChildren</strong><T>(DependencyObject depObj) where T : DependencyObject
78. <Window.InputBindings>
79.     <KeyBinding
80.         Key="Esc"
81.         Command="{Binding BackCommand}"
82.         Modifiers="" />
83. </Window.InputBindings><Window.InputBindings>
84.     <KeyBinding
85.         Key="Esc"
86.         Command="{Binding BackCommand}"
87.         Modifiers="" />
88. </Window.InputBindings>{
89. <Window.InputBindings>
90.     <KeyBinding
91.         Key="Esc"
92.         Command="{Binding BackCommand}"
93.         Modifiers="" />
94. </Window.InputBindings><Window.InputBindings>
95.     <KeyBinding
96.         Key="Esc"
97.         Command="{Binding BackCommand}"
98.         Modifiers="" />
99. </Window.InputBindings><Window.InputBindings>
100.     <KeyBinding
101.         Key="Esc"
102.         Command="{Binding BackCommand}"
103.         Modifiers="" />
104. </Window.InputBindings>if (depObj != null)
105. <Window.InputBindings>
106.     <KeyBinding
107.         Key="Esc"
108.         Command="{Binding BackCommand}"
109.         Modifiers="" />
110. </Window.InputBindings><Window.InputBindings>
111.     <KeyBinding
112.         Key="Esc"
113.         Command="{Binding BackCommand}"
114.         Modifiers="" />
115. </Window.InputBindings><Window.InputBindings>
116.     <KeyBinding
117.         Key="Esc"
118.         Command="{Binding BackCommand}"
119.         Modifiers="" />
120. </Window.InputBindings>{
121. <Window.InputBindings>
122.     <KeyBinding
123.         Key="Esc"
124.         Command="{Binding BackCommand}"
125.         Modifiers="" />
126. </Window.InputBindings><Window.InputBindings>
127.     <KeyBinding
128.         Key="Esc"
129.         Command="{Binding BackCommand}"
130.         Modifiers="" />
131. </Window.InputBindings><Window.InputBindings>
132.     <KeyBinding
133.         Key="Esc"
134.         Command="{Binding BackCommand}"
135.         Modifiers="" />
136. </Window.InputBindings><Window.InputBindings>
137.     <KeyBinding
138.         Key="Esc"
139.         Command="{Binding BackCommand}"
140.         Modifiers="" />
141. </Window.InputBindings>foreach (object rawChild in LogicalTreeHelper.GetChildren(depObj))
142. <Window.InputBindings>
143.     <KeyBinding
144.         Key="Esc"
145.         Command="{Binding BackCommand}"
146.         Modifiers="" />
147. </Window.InputBindings><Window.InputBindings>
148.     <KeyBinding
149.         Key="Esc"
150.         Command="{Binding BackCommand}"
151.         Modifiers="" />
152. </Window.InputBindings><Window.InputBindings>
153.     <KeyBinding
154.         Key="Esc"
155.         Command="{Binding BackCommand}"
156.         Modifiers="" />
157. </Window.InputBindings><Window.InputBindings>
158.     <KeyBinding
159.         Key="Esc"
160.         Command="{Binding BackCommand}"
161.         Modifiers="" />
162. </Window.InputBindings>{
163. <Window.InputBindings>
164.     <KeyBinding
165.         Key="Esc"
166.         Command="{Binding BackCommand}"
167.         Modifiers="" />
168. </Window.InputBindings><Window.InputBindings>
169.     <KeyBinding
170.         Key="Esc"
171.         Command="{Binding BackCommand}"
172.         Modifiers="" />
173. </Window.InputBindings><Window.InputBindings>
174.     <KeyBinding
175.         Key="Esc"
176.         Command="{Binding BackCommand}"
177.         Modifiers="" />
178. </Window.InputBindings><Window.InputBindings>
179.     <KeyBinding
180.         Key="Esc"
181.         Command="{Binding BackCommand}"
182.         Modifiers="" />
183. </Window.InputBindings><Window.InputBindings>
184.     <KeyBinding
185.         Key="Esc"
186.         Command="{Binding BackCommand}"
187.         Modifiers="" />
188. </Window.InputBindings>if (rawChild is DependencyObject)
189. <Window.InputBindings>
190.     <KeyBinding
191.         Key="Esc"
192.         Command="{Binding BackCommand}"
193.         Modifiers="" />
194. </Window.InputBindings><Window.InputBindings>
195.     <KeyBinding
196.         Key="Esc"
197.         Command="{Binding BackCommand}"
198.         Modifiers="" />
199. </Window.InputBindings><Window.InputBindings>
200.     <KeyBinding
201.         Key="Esc"
202.         Command="{Binding BackCommand}"
203.         Modifiers="" />
204. </Window.InputBindings><Window.InputBindings>
205.     <KeyBinding
206.         Key="Esc"
207.         Command="{Binding BackCommand}"
208.         Modifiers="" />
209. </Window.InputBindings><Window.InputBindings>
210.     <KeyBinding
211.         Key="Esc"
212.         Command="{Binding BackCommand}"
213.         Modifiers="" />
214. </Window.InputBindings>{
215. <Window.InputBindings>
216.     <KeyBinding
217.         Key="Esc"
218.         Command="{Binding BackCommand}"
219.         Modifiers="" />
220. </Window.InputBindings><Window.InputBindings>
221.     <KeyBinding
222.         Key="Esc"
223.         Command="{Binding BackCommand}"
224.         Modifiers="" />
225. </Window.InputBindings><Window.InputBindings>
226.     <KeyBinding
227.         Key="Esc"
228.         Command="{Binding BackCommand}"
229.         Modifiers="" />
230. </Window.InputBindings><Window.InputBindings>
231.     <KeyBinding
232.         Key="Esc"
233.         Command="{Binding BackCommand}"
234.         Modifiers="" />
235. </Window.InputBindings><Window.InputBindings>
236.     <KeyBinding
237.         Key="Esc"
238.         Command="{Binding BackCommand}"
239.         Modifiers="" />
240. </Window.InputBindings><Window.InputBindings>
241.     <KeyBinding
242.         Key="Esc"
243.         Command="{Binding BackCommand}"
244.         Modifiers="" />
245. </Window.InputBindings>DependencyObject child = (DependencyObject)rawChild;
246. <Window.InputBindings>
247.     <KeyBinding
248.         Key="Esc"
249.         Command="{Binding BackCommand}"
250.         Modifiers="" />
251. </Window.InputBindings><Window.InputBindings>
252.     <KeyBinding
253.         Key="Esc"
254.         Command="{Binding BackCommand}"
255.         Modifiers="" />
256. </Window.InputBindings><Window.InputBindings>
257.     <KeyBinding
258.         Key="Esc"
259.         Command="{Binding BackCommand}"
260.         Modifiers="" />
261. </Window.InputBindings><Window.InputBindings>
262.     <KeyBinding
263.         Key="Esc"
264.         Command="{Binding BackCommand}"
265.         Modifiers="" />
266. </Window.InputBindings><Window.InputBindings>
267.     <KeyBinding
268.         Key="Esc"
269.         Command="{Binding BackCommand}"
270.         Modifiers="" />
271. </Window.InputBindings><Window.InputBindings>
272.     <KeyBinding
273.         Key="Esc"
274.         Command="{Binding BackCommand}"
275.         Modifiers="" />
276. </Window.InputBindings>if (child is T)
277. <Window.InputBindings>
278.     <KeyBinding
279.         Key="Esc"
280.         Command="{Binding BackCommand}"
281.         Modifiers="" />
282. </Window.InputBindings><Window.InputBindings>
283.     <KeyBinding
284.         Key="Esc"
285.         Command="{Binding BackCommand}"
286.         Modifiers="" />
287. </Window.InputBindings><Window.InputBindings>
288.     <KeyBinding
289.         Key="Esc"
290.         Command="{Binding BackCommand}"
291.         Modifiers="" />
292. </Window.InputBindings><Window.InputBindings>
293.     <KeyBinding
294.         Key="Esc"
295.         Command="{Binding BackCommand}"
296.         Modifiers="" />
297. </Window.InputBindings><Window.InputBindings>
298.     <KeyBinding
299.         Key="Esc"
300.         Command="{Binding BackCommand}"
301.         Modifiers="" />
302. </Window.InputBindings><Window.InputBindings>
303.     <KeyBinding
304.         Key="Esc"
305.         Command="{Binding BackCommand}"
306.         Modifiers="" />
307. </Window.InputBindings>{
308. <Window.InputBindings>
309.     <KeyBinding
310.         Key="Esc"
311.         Command="{Binding BackCommand}"
312.         Modifiers="" />
313. </Window.InputBindings><Window.InputBindings>
314.     <KeyBinding
315.         Key="Esc"
316.         Command="{Binding BackCommand}"
317.         Modifiers="" />
318. </Window.InputBindings><Window.InputBindings>
319.     <KeyBinding
320.         Key="Esc"
321.         Command="{Binding BackCommand}"
322.         Modifiers="" />
323. </Window.InputBindings><Window.InputBindings>
324.     <KeyBinding
325.         Key="Esc"
326.         Command="{Binding BackCommand}"
327.         Modifiers="" />
328. </Window.InputBindings><Window.InputBindings>
329.     <KeyBinding
330.         Key="Esc"
331.         Command="{Binding BackCommand}"
332.         Modifiers="" />
333. </Window.InputBindings><Window.InputBindings>
334.     <KeyBinding
335.         Key="Esc"
336.         Command="{Binding BackCommand}"
337.         Modifiers="" />
338. </Window.InputBindings><Window.InputBindings>
339.     <KeyBinding
340.         Key="Esc"
341.         Command="{Binding BackCommand}"
342.         Modifiers="" />
343. </Window.InputBindings>yield return (T)child;
344. <Window.InputBindings>
345.     <KeyBinding
346.         Key="Esc"
347.         Command="{Binding BackCommand}"
348.         Modifiers="" />
349. </Window.InputBindings><Window.InputBindings>
350.     <KeyBinding
351.         Key="Esc"
352.         Command="{Binding BackCommand}"
353.         Modifiers="" />
354. </Window.InputBindings><Window.InputBindings>
355.     <KeyBinding
356.         Key="Esc"
357.         Command="{Binding BackCommand}"
358.         Modifiers="" />
359. </Window.InputBindings><Window.InputBindings>
360.     <KeyBinding
361.         Key="Esc"
362.         Command="{Binding BackCommand}"
363.         Modifiers="" />
364. </Window.InputBindings><Window.InputBindings>
365.     <KeyBinding
366.         Key="Esc"
367.         Command="{Binding BackCommand}"
368.         Modifiers="" />
369. </Window.InputBindings><Window.InputBindings>
370.     <KeyBinding
371.         Key="Esc"
372.         Command="{Binding BackCommand}"
373.         Modifiers="" />
374. </Window.InputBindings>}
376. <Window.InputBindings>
377.     <KeyBinding
378.         Key="Esc"
379.         Command="{Binding BackCommand}"
380.         Modifiers="" />
381. </Window.InputBindings><Window.InputBindings>
382.     <KeyBinding
383.         Key="Esc"
384.         Command="{Binding BackCommand}"
385.         Modifiers="" />
386. </Window.InputBindings><Window.InputBindings>
387.     <KeyBinding
388.         Key="Esc"
389.         Command="{Binding BackCommand}"
390.         Modifiers="" />
391. </Window.InputBindings><Window.InputBindings>
392.     <KeyBinding
393.         Key="Esc"
394.         Command="{Binding BackCommand}"
395.         Modifiers="" />
396. </Window.InputBindings><Window.InputBindings>
397.     <KeyBinding
398.         Key="Esc"
399.         Command="{Binding BackCommand}"
400.         Modifiers="" />
401. </Window.InputBindings><Window.InputBindings>
402.     <KeyBinding
403.         Key="Esc"
404.         Command="{Binding BackCommand}"
405.         Modifiers="" />
406. </Window.InputBindings>foreach (T childOfChild in <strong>FindLogicalChildren</strong><T>(child))
407. <Window.InputBindings>
408.     <KeyBinding
409.         Key="Esc"
410.         Command="{Binding BackCommand}"
411.         Modifiers="" />
412. </Window.InputBindings><Window.InputBindings>
413.     <KeyBinding
414.         Key="Esc"
415.         Command="{Binding BackCommand}"
416.         Modifiers="" />
417. </Window.InputBindings><Window.InputBindings>
418.     <KeyBinding
419.         Key="Esc"
420.         Command="{Binding BackCommand}"
421.         Modifiers="" />
422. </Window.InputBindings><Window.InputBindings>
423.     <KeyBinding
424.         Key="Esc"
425.         Command="{Binding BackCommand}"
426.         Modifiers="" />
427. </Window.InputBindings><Window.InputBindings>
428.     <KeyBinding
429.         Key="Esc"
430.         Command="{Binding BackCommand}"
431.         Modifiers="" />
432. </Window.InputBindings><Window.InputBindings>
433.     <KeyBinding
434.         Key="Esc"
435.         Command="{Binding BackCommand}"
436.         Modifiers="" />
437. </Window.InputBindings>{
438. <Window.InputBindings>
439.     <KeyBinding
440.         Key="Esc"
441.         Command="{Binding BackCommand}"
442.         Modifiers="" />
443. </Window.InputBindings><Window.InputBindings>
444.     <KeyBinding
445.         Key="Esc"
446.         Command="{Binding BackCommand}"
447.         Modifiers="" />
448. </Window.InputBindings><Window.InputBindings>
449.     <KeyBinding
450.         Key="Esc"
451.         Command="{Binding BackCommand}"
452.         Modifiers="" />
453. </Window.InputBindings><Window.InputBindings>
454.     <KeyBinding
455.         Key="Esc"
456.         Command="{Binding BackCommand}"
457.         Modifiers="" />
458. </Window.InputBindings><Window.InputBindings>
459.     <KeyBinding
460.         Key="Esc"
461.         Command="{Binding BackCommand}"
462.         Modifiers="" />
463. </Window.InputBindings><Window.InputBindings>
464.     <KeyBinding
465.         Key="Esc"
466.         Command="{Binding BackCommand}"
467.         Modifiers="" />
468. </Window.InputBindings><Window.InputBindings>
469.     <KeyBinding
470.         Key="Esc"
471.         Command="{Binding BackCommand}"
472.         Modifiers="" />
473. </Window.InputBindings>yield return childOfChild;
474. <Window.InputBindings>
475.     <KeyBinding
476.         Key="Esc"
477.         Command="{Binding BackCommand}"
478.         Modifiers="" />
479. </Window.InputBindings><Window.InputBindings>
480.     <KeyBinding
481.         Key="Esc"
482.         Command="{Binding BackCommand}"
483.         Modifiers="" />
484. </Window.InputBindings><Window.InputBindings>
485.     <KeyBinding
486.         Key="Esc"
487.         Command="{Binding BackCommand}"
488.         Modifiers="" />
489. </Window.InputBindings><Window.InputBindings>
490.     <KeyBinding
491.         Key="Esc"
492.         Command="{Binding BackCommand}"
493.         Modifiers="" />
494. </Window.InputBindings><Window.InputBindings>
495.     <KeyBinding
496.         Key="Esc"
497.         Command="{Binding BackCommand}"
498.         Modifiers="" />
499. </Window.InputBindings><Window.InputBindings>
500.     <KeyBinding
501.         Key="Esc"
502.         Command="{Binding BackCommand}"
503.         Modifiers="" />
504. </Window.InputBindings>}
505. <Window.InputBindings>
506.     <KeyBinding
507.         Key="Esc"
508.         Command="{Binding BackCommand}"
509.         Modifiers="" />
510. </Window.InputBindings><Window.InputBindings>
511.     <KeyBinding
512.         Key="Esc"
513.         Command="{Binding BackCommand}"
514.         Modifiers="" />
515. </Window.InputBindings><Window.InputBindings>
516.     <KeyBinding
517.         Key="Esc"
518.         Command="{Binding BackCommand}"
519.         Modifiers="" />
520. </Window.InputBindings><Window.InputBindings>
521.     <KeyBinding
522.         Key="Esc"
523.         Command="{Binding BackCommand}"
524.         Modifiers="" />
525. </Window.InputBindings><Window.InputBindings>
526.     <KeyBinding
527.         Key="Esc"
528.         Command="{Binding BackCommand}"
529.         Modifiers="" />
530. </Window.InputBindings>}
531. <Window.InputBindings>
532.     <KeyBinding
533.         Key="Esc"
534.         Command="{Binding BackCommand}"
535.         Modifiers="" />
536. </Window.InputBindings><Window.InputBindings>
537.     <KeyBinding
538.         Key="Esc"
539.         Command="{Binding BackCommand}"
540.         Modifiers="" />
541. </Window.InputBindings><Window.InputBindings>
542.     <KeyBinding
543.         Key="Esc"
544.         Command="{Binding BackCommand}"
545.         Modifiers="" />
546. </Window.InputBindings><Window.InputBindings>
547.     <KeyBinding
548.         Key="Esc"
549.         Command="{Binding BackCommand}"
550.         Modifiers="" />
551. </Window.InputBindings>}
552. <Window.InputBindings>
553.     <KeyBinding
554.         Key="Esc"
555.         Command="{Binding BackCommand}"
556.         Modifiers="" />
557. </Window.InputBindings><Window.InputBindings>
558.     <KeyBinding
559.         Key="Esc"
560.         Command="{Binding BackCommand}"
561.         Modifiers="" />
562. </Window.InputBindings><Window.InputBindings>
563.     <KeyBinding
564.         Key="Esc"
565.         Command="{Binding BackCommand}"
566.         Modifiers="" />
567. </Window.InputBindings>}
568. <Window.InputBindings>
569.     <KeyBinding
570.         Key="Esc"
571.         Command="{Binding BackCommand}"
572.         Modifiers="" />
573. </Window.InputBindings><Window.InputBindings>
574.     <KeyBinding
575.         Key="Esc"
576.         Command="{Binding BackCommand}"
577.         Modifiers="" />
578. </Window.InputBindings>}

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这样我们如果需要获取父控件类下面所有的TextBox控件列表，只需要如下操作即可。

1. //文本控件
2. var texboxList = <strong>FindLogicalChildren</strong><TextBoxBase>(depObj);
3. foreach (var textbox in texboxList)
4. {
5. <Window.InputBindings>
6.     <KeyBinding
7.         Key="Esc"
8.         Command="{Binding BackCommand}"
9.         Modifiers="" />
10. </Window.InputBindings>if (textbox != null && !textbox.IsReadOnly)
11. <Window.InputBindings>
12.     <KeyBinding
13.         Key="Esc"
14.         Command="{Binding BackCommand}"
15.         Modifiers="" />
16. </Window.InputBindings>{
17. <Window.InputBindings>
18.     <KeyBinding
19.         Key="Esc"
20.         Command="{Binding BackCommand}"
21.         Modifiers="" />
22. </Window.InputBindings><Window.InputBindings>
23.     <KeyBinding
24.         Key="Esc"
25.         Command="{Binding BackCommand}"
26.         Modifiers="" />
27. </Window.InputBindings>textbox.TextChanged += (s, e) => { <strong>MainModelHelper.SetIsDirty</strong>(true); };//文本变化触发
28. <Window.InputBindings>
29.     <KeyBinding
30.         Key="Esc"
31.         Command="{Binding BackCommand}"
32.         Modifiers="" />
33. </Window.InputBindings>}
34. }

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其他控件也是类似的方式处理，例如对于CheckBox和RadioButton，可以对它们共同的基类进行一并处理，如下所示。

1. //ToggleButton，包含CheckBox、RadioButton
2. var buttonList = FindLogicalChildren<ToggleButton>(depObj);
3. foreach (var toggle in buttonList)
4. {
5. <Window.InputBindings>
6.     <KeyBinding
7.         Key="Esc"
8.         Command="{Binding BackCommand}"
9.         Modifiers="" />
10. </Window.InputBindings>if (toggle != null && toggle.IsEnabled)
11. <Window.InputBindings>
12.     <KeyBinding
13.         Key="Esc"
14.         Command="{Binding BackCommand}"
15.         Modifiers="" />
16. </Window.InputBindings>{
17. <Window.InputBindings>
18.     <KeyBinding
19.         Key="Esc"
20.         Command="{Binding BackCommand}"
21.         Modifiers="" />
22. </Window.InputBindings><Window.InputBindings>
23.     <KeyBinding
24.         Key="Esc"
25.         Command="{Binding BackCommand}"
26.         Modifiers="" />
27. </Window.InputBindings>toggle.Checked += (s, e) => { MainModelHelper.SetIsDirty(true); };//选择变化触发
28. <Window.InputBindings>
29.     <KeyBinding
30.         Key="Esc"
31.         Command="{Binding BackCommand}"
32.         Modifiers="" />
33. </Window.InputBindings><Window.InputBindings>
34.     <KeyBinding
35.         Key="Esc"
36.         Command="{Binding BackCommand}"
37.         Modifiers="" />
38. </Window.InputBindings>toggle.Unchecked += (s, e) => { MainModelHelper.SetIsDirty(true); };//选择变化触发
39. <Window.InputBindings>
40.     <KeyBinding
41.         Key="Esc"
42.         Command="{Binding BackCommand}"
43.         Modifiers="" />
44. </Window.InputBindings>}
45. }

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这样我们把它放到一个静态的辅助类里面方便使用，如下所示。

1. /// <summary>
2. /// 对WPF控件的相关处理，包括遍历查找等
3. /// </summary>
4. public static class ControlHelper
5. {
6. <Window.InputBindings>
7.     <KeyBinding
8.         Key="Esc"
9.         Command="{Binding BackCommand}"
10.         Modifiers="" />
11. </Window.InputBindings>/// <summary>
12. <Window.InputBindings>
13.     <KeyBinding
14.         Key="Esc"
15.         Command="{Binding BackCommand}"
16.         Modifiers="" />
17. </Window.InputBindings>/// 对界面的控件遍历，并监测状态变化
18. <Window.InputBindings>
19.     <KeyBinding
20.         Key="Esc"
21.         Command="{Binding BackCommand}"
22.         Modifiers="" />
23. </Window.InputBindings>/// </summary>
24. <Window.InputBindings>
25.     <KeyBinding
26.         Key="Esc"
27.         Command="{Binding BackCommand}"
28.         Modifiers="" />
29. </Window.InputBindings>/// <param name="depObj">父节点控件</param>
30. <Window.InputBindings>
31.     <KeyBinding
32.         Key="Esc"
33.         Command="{Binding BackCommand}"
34.         Modifiers="" />
35. </Window.InputBindings>public static void SetDirtyEvent(DependencyObject depObj)
36. <Window.InputBindings>
37.     <KeyBinding
38.         Key="Esc"
39.         Command="{Binding BackCommand}"
40.         Modifiers="" />
41. </Window.InputBindings>{
42. <Window.InputBindings>
43.     <KeyBinding
44.         Key="Esc"
45.         Command="{Binding BackCommand}"
46.         Modifiers="" />
47. </Window.InputBindings><Window.InputBindings>
48.     <KeyBinding
49.         Key="Esc"
50.         Command="{Binding BackCommand}"
51.         Modifiers="" />
52. </Window.InputBindings>//如果全局禁用，则不跟踪脏数据状态
53. <Window.InputBindings>
54.     <KeyBinding
55.         Key="Esc"
56.         Command="{Binding BackCommand}"
57.         Modifiers="" />
58. </Window.InputBindings><Window.InputBindings>
59.     <KeyBinding
60.         Key="Esc"
61.         Command="{Binding BackCommand}"
62.         Modifiers="" />
63. </Window.InputBindings>if (App.ViewModel!.DisableDirtyMessage)
64. <Window.InputBindings>
65.     <KeyBinding
66.         Key="Esc"
67.         Command="{Binding BackCommand}"
68.         Modifiers="" />
69. </Window.InputBindings><Window.InputBindings>
70.     <KeyBinding
71.         Key="Esc"
72.         Command="{Binding BackCommand}"
73.         Modifiers="" />
74. </Window.InputBindings><Window.InputBindings>
75.     <KeyBinding
76.         Key="Esc"
77.         Command="{Binding BackCommand}"
78.         Modifiers="" />
79. </Window.InputBindings>return;
81. <Window.InputBindings>
82.     <KeyBinding
83.         Key="Esc"
84.         Command="{Binding BackCommand}"
85.         Modifiers="" />
86. </Window.InputBindings><Window.InputBindings>
87.     <KeyBinding
88.         Key="Esc"
89.         Command="{Binding BackCommand}"
90.         Modifiers="" />
91. </Window.InputBindings>#region 对控件类型进行监控
93. <Window.InputBindings>
94.     <KeyBinding
95.         Key="Esc"
96.         Command="{Binding BackCommand}"
97.         Modifiers="" />
98. </Window.InputBindings><Window.InputBindings>
99.     <KeyBinding
100.         Key="Esc"
101.         Command="{Binding BackCommand}"
102.         Modifiers="" />
103. </Window.InputBindings>//文本控件
104. <Window.InputBindings>
105.     <KeyBinding
106.         Key="Esc"
107.         Command="{Binding BackCommand}"
108.         Modifiers="" />
109. </Window.InputBindings><Window.InputBindings>
110.     <KeyBinding
111.         Key="Esc"
112.         Command="{Binding BackCommand}"
113.         Modifiers="" />
114. </Window.InputBindings>var texboxList = FindLogicalChildren<TextBoxBase>(depObj);
115. <Window.InputBindings>
116.     <KeyBinding
117.         Key="Esc"
118.         Command="{Binding BackCommand}"
119.         Modifiers="" />
120. </Window.InputBindings><Window.InputBindings>
121.     <KeyBinding
122.         Key="Esc"
123.         Command="{Binding BackCommand}"
124.         Modifiers="" />
125. </Window.InputBindings>foreach (var textbox in texboxList)
126. <Window.InputBindings>
127.     <KeyBinding
128.         Key="Esc"
129.         Command="{Binding BackCommand}"
130.         Modifiers="" />
131. </Window.InputBindings><Window.InputBindings>
132.     <KeyBinding
133.         Key="Esc"
134.         Command="{Binding BackCommand}"
135.         Modifiers="" />
136. </Window.InputBindings>{
137. <Window.InputBindings>
138.     <KeyBinding
139.         Key="Esc"
140.         Command="{Binding BackCommand}"
141.         Modifiers="" />
142. </Window.InputBindings><Window.InputBindings>
143.     <KeyBinding
144.         Key="Esc"
145.         Command="{Binding BackCommand}"
146.         Modifiers="" />
147. </Window.InputBindings><Window.InputBindings>
148.     <KeyBinding
149.         Key="Esc"
150.         Command="{Binding BackCommand}"
151.         Modifiers="" />
152. </Window.InputBindings>if (textbox != null && !textbox.IsReadOnly)
153. <Window.InputBindings>
154.     <KeyBinding
155.         Key="Esc"
156.         Command="{Binding BackCommand}"
157.         Modifiers="" />
158. </Window.InputBindings><Window.InputBindings>
159.     <KeyBinding
160.         Key="Esc"
161.         Command="{Binding BackCommand}"
162.         Modifiers="" />
163. </Window.InputBindings><Window.InputBindings>
164.     <KeyBinding
165.         Key="Esc"
166.         Command="{Binding BackCommand}"
167.         Modifiers="" />
168. </Window.InputBindings>{
169. <Window.InputBindings>
170.     <KeyBinding
171.         Key="Esc"
172.         Command="{Binding BackCommand}"
173.         Modifiers="" />
174. </Window.InputBindings><Window.InputBindings>
175.     <KeyBinding
176.         Key="Esc"
177.         Command="{Binding BackCommand}"
178.         Modifiers="" />
179. </Window.InputBindings><Window.InputBindings>
180.     <KeyBinding
181.         Key="Esc"
182.         Command="{Binding BackCommand}"
183.         Modifiers="" />
184. </Window.InputBindings><Window.InputBindings>
185.     <KeyBinding
186.         Key="Esc"
187.         Command="{Binding BackCommand}"
188.         Modifiers="" />
189. </Window.InputBindings>textbox.TextChanged += (s, e) => { MainModelHelper.SetIsDirty(true); };//文本变化触发
190. <Window.InputBindings>
191.     <KeyBinding
192.         Key="Esc"
193.         Command="{Binding BackCommand}"
194.         Modifiers="" />
195. </Window.InputBindings><Window.InputBindings>
196.     <KeyBinding
197.         Key="Esc"
198.         Command="{Binding BackCommand}"
199.         Modifiers="" />
200. </Window.InputBindings><Window.InputBindings>
201.     <KeyBinding
202.         Key="Esc"
203.         Command="{Binding BackCommand}"
204.         Modifiers="" />
205. </Window.InputBindings>}
206. <Window.InputBindings>
207.     <KeyBinding
208.         Key="Esc"
209.         Command="{Binding BackCommand}"
210.         Modifiers="" />
211. </Window.InputBindings><Window.InputBindings>
212.     <KeyBinding
213.         Key="Esc"
214.         Command="{Binding BackCommand}"
215.         Modifiers="" />
216. </Window.InputBindings>}
217. <Window.InputBindings>
218.     <KeyBinding
219.         Key="Esc"
220.         Command="{Binding BackCommand}"
221.         Modifiers="" />
222. </Window.InputBindings><Window.InputBindings>
223.     <KeyBinding
224.         Key="Esc"
225.         Command="{Binding BackCommand}"
226.         Modifiers="" />
227. </Window.InputBindings>//下拉列表
228. <Window.InputBindings>
229.     <KeyBinding
230.         Key="Esc"
231.         Command="{Binding BackCommand}"
232.         Modifiers="" />
233. </Window.InputBindings><Window.InputBindings>
234.     <KeyBinding
235.         Key="Esc"
236.         Command="{Binding BackCommand}"
237.         Modifiers="" />
238. </Window.InputBindings>var selectorList = FindLogicalChildren<Selector>(depObj);
239. <Window.InputBindings>
240.     <KeyBinding
241.         Key="Esc"
242.         Command="{Binding BackCommand}"
243.         Modifiers="" />
244. </Window.InputBindings><Window.InputBindings>
245.     <KeyBinding
246.         Key="Esc"
247.         Command="{Binding BackCommand}"
248.         Modifiers="" />
249. </Window.InputBindings>foreach (var selector in selectorList)
250. <Window.InputBindings>
251.     <KeyBinding
252.         Key="Esc"
253.         Command="{Binding BackCommand}"
254.         Modifiers="" />
255. </Window.InputBindings><Window.InputBindings>
256.     <KeyBinding
257.         Key="Esc"
258.         Command="{Binding BackCommand}"
259.         Modifiers="" />
260. </Window.InputBindings>{
261. <Window.InputBindings>
262.     <KeyBinding
263.         Key="Esc"
264.         Command="{Binding BackCommand}"
265.         Modifiers="" />
266. </Window.InputBindings><Window.InputBindings>
267.     <KeyBinding
268.         Key="Esc"
269.         Command="{Binding BackCommand}"
270.         Modifiers="" />
271. </Window.InputBindings><Window.InputBindings>
272.     <KeyBinding
273.         Key="Esc"
274.         Command="{Binding BackCommand}"
275.         Modifiers="" />
276. </Window.InputBindings>var selectorType = selector.GetType();
277. <Window.InputBindings>
278.     <KeyBinding
279.         Key="Esc"
280.         Command="{Binding BackCommand}"
281.         Modifiers="" />
282. </Window.InputBindings><Window.InputBindings>
283.     <KeyBinding
284.         Key="Esc"
285.         Command="{Binding BackCommand}"
286.         Modifiers="" />
287. </Window.InputBindings><Window.InputBindings>
288.     <KeyBinding
289.         Key="Esc"
290.         Command="{Binding BackCommand}"
291.         Modifiers="" />
292. </Window.InputBindings>if (selector != null && selector.IsEnabled &&
293. <Window.InputBindings>
294.     <KeyBinding
295.         Key="Esc"
296.         Command="{Binding BackCommand}"
297.         Modifiers="" />
298. </Window.InputBindings><Window.InputBindings>
299.     <KeyBinding
300.         Key="Esc"
301.         Command="{Binding BackCommand}"
302.         Modifiers="" />
303. </Window.InputBindings><Window.InputBindings>
304.     <KeyBinding
305.         Key="Esc"
306.         Command="{Binding BackCommand}"
307.         Modifiers="" />
308. </Window.InputBindings>   selectorType != typeof(TabControl) && selectorType != typeof(ListBox)) //排除TabControl和ListBox选择触发
309. <Window.InputBindings>
310.     <KeyBinding
311.         Key="Esc"
312.         Command="{Binding BackCommand}"
313.         Modifiers="" />
314. </Window.InputBindings><Window.InputBindings>
315.     <KeyBinding
316.         Key="Esc"
317.         Command="{Binding BackCommand}"
318.         Modifiers="" />
319. </Window.InputBindings><Window.InputBindings>
320.     <KeyBinding
321.         Key="Esc"
322.         Command="{Binding BackCommand}"
323.         Modifiers="" />
324. </Window.InputBindings>{
325. <Window.InputBindings>
326.     <KeyBinding
327.         Key="Esc"
328.         Command="{Binding BackCommand}"
329.         Modifiers="" />
330. </Window.InputBindings><Window.InputBindings>
331.     <KeyBinding
332.         Key="Esc"
333.         Command="{Binding BackCommand}"
334.         Modifiers="" />
335. </Window.InputBindings><Window.InputBindings>
336.     <KeyBinding
337.         Key="Esc"
338.         Command="{Binding BackCommand}"
339.         Modifiers="" />
340. </Window.InputBindings><Window.InputBindings>
341.     <KeyBinding
342.         Key="Esc"
343.         Command="{Binding BackCommand}"
344.         Modifiers="" />
345. </Window.InputBindings>selector.SelectionChanged += (s, e) => { MainModelHelper.SetIsDirty(true); };//选择变化触发
346. <Window.InputBindings>
347.     <KeyBinding
348.         Key="Esc"
349.         Command="{Binding BackCommand}"
350.         Modifiers="" />
351. </Window.InputBindings><Window.InputBindings>
352.     <KeyBinding
353.         Key="Esc"
354.         Command="{Binding BackCommand}"
355.         Modifiers="" />
356. </Window.InputBindings><Window.InputBindings>
357.     <KeyBinding
358.         Key="Esc"
359.         Command="{Binding BackCommand}"
360.         Modifiers="" />
361. </Window.InputBindings>}
362. <Window.InputBindings>
363.     <KeyBinding
364.         Key="Esc"
365.         Command="{Binding BackCommand}"
366.         Modifiers="" />
367. </Window.InputBindings><Window.InputBindings>
368.     <KeyBinding
369.         Key="Esc"
370.         Command="{Binding BackCommand}"
371.         Modifiers="" />
372. </Window.InputBindings>}
373. <Window.InputBindings>
374.     <KeyBinding
375.         Key="Esc"
376.         Command="{Binding BackCommand}"
377.         Modifiers="" />
378. </Window.InputBindings><Window.InputBindings>
379.     <KeyBinding
380.         Key="Esc"
381.         Command="{Binding BackCommand}"
382.         Modifiers="" />
383. </Window.InputBindings>//ToggleButton，包含CheckBox、RadioButton
384. <Window.InputBindings>
385.     <KeyBinding
386.         Key="Esc"
387.         Command="{Binding BackCommand}"
388.         Modifiers="" />
389. </Window.InputBindings><Window.InputBindings>
390.     <KeyBinding
391.         Key="Esc"
392.         Command="{Binding BackCommand}"
393.         Modifiers="" />
394. </Window.InputBindings>var buttonList = FindLogicalChildren<ToggleButton>(depObj);
395. <Window.InputBindings>
396.     <KeyBinding
397.         Key="Esc"
398.         Command="{Binding BackCommand}"
399.         Modifiers="" />
400. </Window.InputBindings><Window.InputBindings>
401.     <KeyBinding
402.         Key="Esc"
403.         Command="{Binding BackCommand}"
404.         Modifiers="" />
405. </Window.InputBindings>foreach (var toggle in buttonList)
406. <Window.InputBindings>
407.     <KeyBinding
408.         Key="Esc"
409.         Command="{Binding BackCommand}"
410.         Modifiers="" />
411. </Window.InputBindings><Window.InputBindings>
412.     <KeyBinding
413.         Key="Esc"
414.         Command="{Binding BackCommand}"
415.         Modifiers="" />
416. </Window.InputBindings>{
417. <Window.InputBindings>
418.     <KeyBinding
419.         Key="Esc"
420.         Command="{Binding BackCommand}"
421.         Modifiers="" />
422. </Window.InputBindings><Window.InputBindings>
423.     <KeyBinding
424.         Key="Esc"
425.         Command="{Binding BackCommand}"
426.         Modifiers="" />
427. </Window.InputBindings><Window.InputBindings>
428.     <KeyBinding
429.         Key="Esc"
430.         Command="{Binding BackCommand}"
431.         Modifiers="" />
432. </Window.InputBindings>if (toggle != null && toggle.IsEnabled)
433. <Window.InputBindings>
434.     <KeyBinding
435.         Key="Esc"
436.         Command="{Binding BackCommand}"
437.         Modifiers="" />
438. </Window.InputBindings><Window.InputBindings>
439.     <KeyBinding
440.         Key="Esc"
441.         Command="{Binding BackCommand}"
442.         Modifiers="" />
443. </Window.InputBindings><Window.InputBindings>
444.     <KeyBinding
445.         Key="Esc"
446.         Command="{Binding BackCommand}"
447.         Modifiers="" />
448. </Window.InputBindings>{
449. <Window.InputBindings>
450.     <KeyBinding
451.         Key="Esc"
452.         Command="{Binding BackCommand}"
453.         Modifiers="" />
454. </Window.InputBindings><Window.InputBindings>
455.     <KeyBinding
456.         Key="Esc"
457.         Command="{Binding BackCommand}"
458.         Modifiers="" />
459. </Window.InputBindings><Window.InputBindings>
460.     <KeyBinding
461.         Key="Esc"
462.         Command="{Binding BackCommand}"
463.         Modifiers="" />
464. </Window.InputBindings><Window.InputBindings>
465.     <KeyBinding
466.         Key="Esc"
467.         Command="{Binding BackCommand}"
468.         Modifiers="" />
469. </Window.InputBindings>toggle.Checked += (s, e) => { MainModelHelper.SetIsDirty(true); };//选择变化触发
470. <Window.InputBindings>
471.     <KeyBinding
472.         Key="Esc"
473.         Command="{Binding BackCommand}"
474.         Modifiers="" />
475. </Window.InputBindings><Window.InputBindings>
476.     <KeyBinding
477.         Key="Esc"
478.         Command="{Binding BackCommand}"
479.         Modifiers="" />
480. </Window.InputBindings><Window.InputBindings>
481.     <KeyBinding
482.         Key="Esc"
483.         Command="{Binding BackCommand}"
484.         Modifiers="" />
485. </Window.InputBindings><Window.InputBindings>
486.     <KeyBinding
487.         Key="Esc"
488.         Command="{Binding BackCommand}"
489.         Modifiers="" />
490. </Window.InputBindings>toggle.Unchecked += (s, e) => { MainModelHelper.SetIsDirty(true); };//选择变化触发
491. <Window.InputBindings>
492.     <KeyBinding
493.         Key="Esc"
494.         Command="{Binding BackCommand}"
495.         Modifiers="" />
496. </Window.InputBindings><Window.InputBindings>
497.     <KeyBinding
498.         Key="Esc"
499.         Command="{Binding BackCommand}"
500.         Modifiers="" />
501. </Window.InputBindings><Window.InputBindings>
502.     <KeyBinding
503.         Key="Esc"
504.         Command="{Binding BackCommand}"
505.         Modifiers="" />
506. </Window.InputBindings>}
507. <Window.InputBindings>
508.     <KeyBinding
509.         Key="Esc"
510.         Command="{Binding BackCommand}"
511.         Modifiers="" />
512. </Window.InputBindings><Window.InputBindings>
513.     <KeyBinding
514.         Key="Esc"
515.         Command="{Binding BackCommand}"
516.         Modifiers="" />
517. </Window.InputBindings>}
518. <Window.InputBindings>
519.     <KeyBinding
520.         Key="Esc"
521.         Command="{Binding BackCommand}"
522.         Modifiers="" />
523. </Window.InputBindings><Window.InputBindings>
524.     <KeyBinding
525.         Key="Esc"
526.         Command="{Binding BackCommand}"
527.         Modifiers="" />
528. </Window.InputBindings>#endregion
529. <Window.InputBindings>
530.     <KeyBinding
531.         Key="Esc"
532.         Command="{Binding BackCommand}"
533.         Modifiers="" />
534. </Window.InputBindings>}

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因此，对于窗口的控件的编辑状态跟踪，我们可以在窗口的Loaded或者ContentRendered中实现跟踪即可，我这里实现覆盖OnContentRendered的方式，来对窗口控件的统一跟踪。

1. <Window.InputBindings>
2.     <KeyBinding
3.         Key="Esc"
4.         Command="{Binding BackCommand}"
5.         Modifiers="" />
6. </Window.InputBindings>/// <summary>
7. <Window.InputBindings>
8.     <KeyBinding
9.         Key="Esc"
10.         Command="{Binding BackCommand}"
11.         Modifiers="" />
12. </Window.InputBindings>/// 该事件在loaded之后执行，也是在所有元素渲染结束之后执行
13. <Window.InputBindings>
14.     <KeyBinding
15.         Key="Esc"
16.         Command="{Binding BackCommand}"
17.         Modifiers="" />
18. </Window.InputBindings>/// </summary>
19. <Window.InputBindings>
20.     <KeyBinding
21.         Key="Esc"
22.         Command="{Binding BackCommand}"
23.         Modifiers="" />
24. </Window.InputBindings>protected override void OnContentRendered(EventArgs e)
25. <Window.InputBindings>
26.     <KeyBinding
27.         Key="Esc"
28.         Command="{Binding BackCommand}"
29.         Modifiers="" />
30. </Window.InputBindings>{
31. <Window.InputBindings>
32.     <KeyBinding
33.         Key="Esc"
34.         Command="{Binding BackCommand}"
35.         Modifiers="" />
36. </Window.InputBindings><Window.InputBindings>
37.     <KeyBinding
38.         Key="Esc"
39.         Command="{Binding BackCommand}"
40.         Modifiers="" />
41. </Window.InputBindings>base.OnContentRendered(e);//初始化后默认脏数据状态为false
42. <Window.InputBindings>
43.     <KeyBinding
44.         Key="Esc"
45.         Command="{Binding BackCommand}"
46.         Modifiers="" />
47. </Window.InputBindings><Window.InputBindings>
48.     <KeyBinding
49.         Key="Esc"
50.         Command="{Binding BackCommand}"
51.         Modifiers="" />
52. </Window.InputBindings>App.ViewModel!.IsDirty = false;
53. <Window.InputBindings>
54.     <KeyBinding
55.         Key="Esc"
56.         Command="{Binding BackCommand}"
57.         Modifiers="" />
58. </Window.InputBindings><Window.InputBindings>
59.     <KeyBinding
60.         Key="Esc"
61.         Command="{Binding BackCommand}"
62.         Modifiers="" />
63. </Window.InputBindings>//对控件变化进行跟踪， 遍历父级及子级节点
64. <Window.InputBindings>
65.     <KeyBinding
66.         Key="Esc"
67.         Command="{Binding BackCommand}"
68.         Modifiers="" />
69. </Window.InputBindings><Window.InputBindings>
70.     <KeyBinding
71.         Key="Esc"
72.         Command="{Binding BackCommand}"
73.         Modifiers="" />
74. </Window.InputBindings>ControlHelper.SetDirtyEvent(this);
75. <Window.InputBindings>
76.     <KeyBinding
77.         Key="Esc"
78.         Command="{Binding BackCommand}"
79.         Modifiers="" />
80. </Window.InputBindings><Window.InputBindings>
81.     <KeyBinding
82.         Key="Esc"
83.         Command="{Binding BackCommand}"
84.         Modifiers="" />
85. </Window.InputBindings>//如果修改内容，对退出窗口进行确认
86. <Window.InputBindings>
87.     <KeyBinding
88.         Key="Esc"
89.         Command="{Binding BackCommand}"
90.         Modifiers="" />
91. </Window.InputBindings><Window.InputBindings>
92.     <KeyBinding
93.         Key="Esc"
94.         Command="{Binding BackCommand}"
95.         Modifiers="" />
96. </Window.InputBindings>this.Closing += (s, e) =>
97. <Window.InputBindings>
98.     <KeyBinding
99.         Key="Esc"
100.         Command="{Binding BackCommand}"
101.         Modifiers="" />
102. </Window.InputBindings><Window.InputBindings>
103.     <KeyBinding
104.         Key="Esc"
105.         Command="{Binding BackCommand}"
106.         Modifiers="" />
107. </Window.InputBindings>{
108. <Window.InputBindings>
109.     <KeyBinding
110.         Key="Esc"
111.         Command="{Binding BackCommand}"
112.         Modifiers="" />
113. </Window.InputBindings><Window.InputBindings>
114.     <KeyBinding
115.         Key="Esc"
116.         Command="{Binding BackCommand}"
117.         Modifiers="" />
118. </Window.InputBindings><Window.InputBindings>
119.     <KeyBinding
120.         Key="Esc"
121.         Command="{Binding BackCommand}"
122.         Modifiers="" />
123. </Window.InputBindings>var isDisableDirty = App.ViewModel!.DisableDirtyMessage; //是否禁用了脏数据提示
124. <Window.InputBindings>
125.     <KeyBinding
126.         Key="Esc"
127.         Command="{Binding BackCommand}"
128.         Modifiers="" />
129. </Window.InputBindings><Window.InputBindings>
130.     <KeyBinding
131.         Key="Esc"
132.         Command="{Binding BackCommand}"
133.         Modifiers="" />
134. </Window.InputBindings><Window.InputBindings>
135.     <KeyBinding
136.         Key="Esc"
137.         Command="{Binding BackCommand}"
138.         Modifiers="" />
139. </Window.InputBindings>var isDirty = App.ViewModel!.IsDirty;
140. <Window.InputBindings>
141.     <KeyBinding
142.         Key="Esc"
143.         Command="{Binding BackCommand}"
144.         Modifiers="" />
145. </Window.InputBindings><Window.InputBindings>
146.     <KeyBinding
147.         Key="Esc"
148.         Command="{Binding BackCommand}"
149.         Modifiers="" />
150. </Window.InputBindings><Window.InputBindings>
151.     <KeyBinding
152.         Key="Esc"
153.         Command="{Binding BackCommand}"
154.         Modifiers="" />
155. </Window.InputBindings>if (!isDisableDirty && isDirty)
156. <Window.InputBindings>
157.     <KeyBinding
158.         Key="Esc"
159.         Command="{Binding BackCommand}"
160.         Modifiers="" />
161. </Window.InputBindings><Window.InputBindings>
162.     <KeyBinding
163.         Key="Esc"
164.         Command="{Binding BackCommand}"
165.         Modifiers="" />
166. </Window.InputBindings><Window.InputBindings>
167.     <KeyBinding
168.         Key="Esc"
169.         Command="{Binding BackCommand}"
170.         Modifiers="" />
171. </Window.InputBindings>{
172. <Window.InputBindings>
173.     <KeyBinding
174.         Key="Esc"
175.         Command="{Binding BackCommand}"
176.         Modifiers="" />
177. </Window.InputBindings><Window.InputBindings>
178.     <KeyBinding
179.         Key="Esc"
180.         Command="{Binding BackCommand}"
181.         Modifiers="" />
182. </Window.InputBindings><Window.InputBindings>
183.     <KeyBinding
184.         Key="Esc"
185.         Command="{Binding BackCommand}"
186.         Modifiers="" />
187. </Window.InputBindings><Window.InputBindings>
188.     <KeyBinding
189.         Key="Esc"
190.         Command="{Binding BackCommand}"
191.         Modifiers="" />
192. </Window.InputBindings>//数据已脏，提示确认
193. <Window.InputBindings>
194.     <KeyBinding
195.         Key="Esc"
196.         Command="{Binding BackCommand}"
197.         Modifiers="" />
198. </Window.InputBindings><Window.InputBindings>
199.     <KeyBinding
200.         Key="Esc"
201.         Command="{Binding BackCommand}"
202.         Modifiers="" />
203. </Window.InputBindings><Window.InputBindings>
204.     <KeyBinding
205.         Key="Esc"
206.         Command="{Binding BackCommand}"
207.         Modifiers="" />
208. </Window.InputBindings><Window.InputBindings>
209.     <KeyBinding
210.         Key="Esc"
211.         Command="{Binding BackCommand}"
212.         Modifiers="" />
213. </Window.InputBindings>if (MessageDxUtil.ShowYesNoAndWarning("界面控件数据已编辑过，是否确认丢弃并关闭窗口") != System.Windows.MessageBoxResult.Yes)
214. <Window.InputBindings>
215.     <KeyBinding
216.         Key="Esc"
217.         Command="{Binding BackCommand}"
218.         Modifiers="" />
219. </Window.InputBindings><Window.InputBindings>
220.     <KeyBinding
221.         Key="Esc"
222.         Command="{Binding BackCommand}"
223.         Modifiers="" />
224. </Window.InputBindings><Window.InputBindings>
225.     <KeyBinding
226.         Key="Esc"
227.         Command="{Binding BackCommand}"
228.         Modifiers="" />
229. </Window.InputBindings><Window.InputBindings>
230.     <KeyBinding
231.         Key="Esc"
232.         Command="{Binding BackCommand}"
233.         Modifiers="" />
234. </Window.InputBindings>{
235. <Window.InputBindings>
236.     <KeyBinding
237.         Key="Esc"
238.         Command="{Binding BackCommand}"
239.         Modifiers="" />
240. </Window.InputBindings><Window.InputBindings>
241.     <KeyBinding
242.         Key="Esc"
243.         Command="{Binding BackCommand}"
244.         Modifiers="" />
245. </Window.InputBindings><Window.InputBindings>
246.     <KeyBinding
247.         Key="Esc"
248.         Command="{Binding BackCommand}"
249.         Modifiers="" />
250. </Window.InputBindings><Window.InputBindings>
251.     <KeyBinding
252.         Key="Esc"
253.         Command="{Binding BackCommand}"
254.         Modifiers="" />
255. </Window.InputBindings><Window.InputBindings>
256.     <KeyBinding
257.         Key="Esc"
258.         Command="{Binding BackCommand}"
259.         Modifiers="" />
260. </Window.InputBindings>e.Cancel = true;
261. <Window.InputBindings>
262.     <KeyBinding
263.         Key="Esc"
264.         Command="{Binding BackCommand}"
265.         Modifiers="" />
266. </Window.InputBindings><Window.InputBindings>
267.     <KeyBinding
268.         Key="Esc"
269.         Command="{Binding BackCommand}"
270.         Modifiers="" />
271. </Window.InputBindings><Window.InputBindings>
272.     <KeyBinding
273.         Key="Esc"
274.         Command="{Binding BackCommand}"
275.         Modifiers="" />
276. </Window.InputBindings><Window.InputBindings>
277.     <KeyBinding
278.         Key="Esc"
279.         Command="{Binding BackCommand}"
280.         Modifiers="" />
281. </Window.InputBindings>}
282. <Window.InputBindings>
283.     <KeyBinding
284.         Key="Esc"
285.         Command="{Binding BackCommand}"
286.         Modifiers="" />
287. </Window.InputBindings><Window.InputBindings>
288.     <KeyBinding
289.         Key="Esc"
290.         Command="{Binding BackCommand}"
291.         Modifiers="" />
292. </Window.InputBindings><Window.InputBindings>
293.     <KeyBinding
294.         Key="Esc"
295.         Command="{Binding BackCommand}"
296.         Modifiers="" />
297. </Window.InputBindings><Window.InputBindings>
298.     <KeyBinding
299.         Key="Esc"
300.         Command="{Binding BackCommand}"
301.         Modifiers="" />
302. </Window.InputBindings>else
303. <Window.InputBindings>
304.     <KeyBinding
305.         Key="Esc"
306.         Command="{Binding BackCommand}"
307.         Modifiers="" />
308. </Window.InputBindings><Window.InputBindings>
309.     <KeyBinding
310.         Key="Esc"
311.         Command="{Binding BackCommand}"
312.         Modifiers="" />
313. </Window.InputBindings><Window.InputBindings>
314.     <KeyBinding
315.         Key="Esc"
316.         Command="{Binding BackCommand}"
317.         Modifiers="" />
318. </Window.InputBindings><Window.InputBindings>
319.     <KeyBinding
320.         Key="Esc"
321.         Command="{Binding BackCommand}"
322.         Modifiers="" />
323. </Window.InputBindings>{
324. <Window.InputBindings>
325.     <KeyBinding
326.         Key="Esc"
327.         Command="{Binding BackCommand}"
328.         Modifiers="" />
329. </Window.InputBindings><Window.InputBindings>
330.     <KeyBinding
331.         Key="Esc"
332.         Command="{Binding BackCommand}"
333.         Modifiers="" />
334. </Window.InputBindings><Window.InputBindings>
335.     <KeyBinding
336.         Key="Esc"
337.         Command="{Binding BackCommand}"
338.         Modifiers="" />
339. </Window.InputBindings><Window.InputBindings>
340.     <KeyBinding
341.         Key="Esc"
342.         Command="{Binding BackCommand}"
343.         Modifiers="" />
344. </Window.InputBindings><Window.InputBindings>
345.     <KeyBinding
346.         Key="Esc"
347.         Command="{Binding BackCommand}"
348.         Modifiers="" />
349. </Window.InputBindings>App.ViewModel!.IsDirty = false;//取消脏数据状态
350. <Window.InputBindings>
351.     <KeyBinding
352.         Key="Esc"
353.         Command="{Binding BackCommand}"
354.         Modifiers="" />
355. </Window.InputBindings><Window.InputBindings>
356.     <KeyBinding
357.         Key="Esc"
358.         Command="{Binding BackCommand}"
359.         Modifiers="" />
360. </Window.InputBindings><Window.InputBindings>
361.     <KeyBinding
362.         Key="Esc"
363.         Command="{Binding BackCommand}"
364.         Modifiers="" />
365. </Window.InputBindings><Window.InputBindings>
366.     <KeyBinding
367.         Key="Esc"
368.         Command="{Binding BackCommand}"
369.         Modifiers="" />
370. </Window.InputBindings><Window.InputBindings>
371.     <KeyBinding
372.         Key="Esc"
373.         Command="{Binding BackCommand}"
374.         Modifiers="" />
375. </Window.InputBindings>GrowlUtil.ClearTips(); //清空提示
376. <Window.InputBindings>
377.     <KeyBinding
378.         Key="Esc"
379.         Command="{Binding BackCommand}"
380.         Modifiers="" />
381. </Window.InputBindings><Window.InputBindings>
382.     <KeyBinding
383.         Key="Esc"
384.         Command="{Binding BackCommand}"
385.         Modifiers="" />
386. </Window.InputBindings><Window.InputBindings>
387.     <KeyBinding
388.         Key="Esc"
389.         Command="{Binding BackCommand}"
390.         Modifiers="" />
391. </Window.InputBindings><Window.InputBindings>
392.     <KeyBinding
393.         Key="Esc"
394.         Command="{Binding BackCommand}"
395.         Modifiers="" />
396. </Window.InputBindings>}
397. <Window.InputBindings>
398.     <KeyBinding
399.         Key="Esc"
400.         Command="{Binding BackCommand}"
401.         Modifiers="" />
402. </Window.InputBindings><Window.InputBindings>
403.     <KeyBinding
404.         Key="Esc"
405.         Command="{Binding BackCommand}"
406.         Modifiers="" />
407. </Window.InputBindings><Window.InputBindings>
408.     <KeyBinding
409.         Key="Esc"
410.         Command="{Binding BackCommand}"
411.         Modifiers="" />
412. </Window.InputBindings>}
413. <Window.InputBindings>
414.     <KeyBinding
415.         Key="Esc"
416.         Command="{Binding BackCommand}"
417.         Modifiers="" />
418. </Window.InputBindings><Window.InputBindings>
419.     <KeyBinding
420.         Key="Esc"
421.         Command="{Binding BackCommand}"
422.         Modifiers="" />
423. </Window.InputBindings>};
424. <Window.InputBindings>
425.     <KeyBinding
426.         Key="Esc"
427.         Command="{Binding BackCommand}"
428.         Modifiers="" />
429. </Window.InputBindings>}

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但是每个编辑窗口这样做，肯定是代码冗余的，我们优化一下，把逻辑抽取到一个独立的辅助类里面处理，这里改进后代码如下所示。

1. /// <summary>
2. /// 该事件在loaded之后执行，也是在所有元素渲染结束之后执行
3. /// </summary>
4. protected override void OnContentRendered(EventArgs e)
5. {
6. <Window.InputBindings>
7.     <KeyBinding
8.         Key="Esc"
9.         Command="{Binding BackCommand}"
10.         Modifiers="" />
11. </Window.InputBindings>base.OnContentRendered(e);
13. <Window.InputBindings>
14.     <KeyBinding
15.         Key="Esc"
16.         Command="{Binding BackCommand}"
17.         Modifiers="" />
18. </Window.InputBindings>//在窗口准备完成后，对控件的内容变化进行监控，如修改过则退出确认
19. <Window.InputBindings>
20.     <KeyBinding
21.         Key="Esc"
22.         Command="{Binding BackCommand}"
23.         Modifiers="" />
24. </Window.InputBindings>ControlHelper.SetDirtyWindow(this);
25. }

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这样在页面关闭的时候，我们提示用户即可。

当然，我们在主窗口视图模型里面也是设置了一个总开关，不需要的时候，关闭它即可。

1. <strong>App.ViewModel!.DisableDirtyMessage</strong>

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 我们在上面的代码逻辑中也可以看到，我们如果确认丢弃修改内容，那么状态重置，并清空一些提示信息即可。

1. <strong>App.ViewModel!.IsDirty</strong> = false;//取消脏数据状态
2. GrowlUtil.ClearTips(); //清空提示

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我们前面说到窗口对象的注入都是以Transient的方式，窗口的打开都是以每次构建新对象的方式，视图模型则是共享方式，因此，我们打开窗口的操作如下所示。

1. /// <summary>
2. /// 批量添加页面处理
3. /// </summary>
4. [RelayCommand]
5. private void BatchAdd()
6. {
7. <Window.InputBindings>
8.     <KeyBinding
9.         Key="Esc"
10.         Command="{Binding BackCommand}"
11.         Modifiers="" />
12. </Window.InputBindings>if (this.ViewModel.SelectDictType == null)
13. <Window.InputBindings>
14.     <KeyBinding
15.         Key="Esc"
16.         Command="{Binding BackCommand}"
17.         Modifiers="" />
18. </Window.InputBindings>{
19. <Window.InputBindings>
20.     <KeyBinding
21.         Key="Esc"
22.         Command="{Binding BackCommand}"
23.         Modifiers="" />
24. </Window.InputBindings><Window.InputBindings>
25.     <KeyBinding
26.         Key="Esc"
27.         Command="{Binding BackCommand}"
28.         Modifiers="" />
29. </Window.InputBindings>GrowlUtil.ShowInfo("请选择大类再添加项目");
30. <Window.InputBindings>
31.     <KeyBinding
32.         Key="Esc"
33.         Command="{Binding BackCommand}"
34.         Modifiers="" />
35. </Window.InputBindings><Window.InputBindings>
36.     <KeyBinding
37.         Key="Esc"
38.         Command="{Binding BackCommand}"
39.         Modifiers="" />
40. </Window.InputBindings>return;
41. <Window.InputBindings>
42.     <KeyBinding
43.         Key="Esc"
44.         Command="{Binding BackCommand}"
45.         Modifiers="" />
46. </Window.InputBindings>}
48. <Window.InputBindings>
49.     <KeyBinding
50.         Key="Esc"
51.         Command="{Binding BackCommand}"
52.         Modifiers="" />
53. </Window.InputBindings>//获取新增、编辑页面接口
54. <Window.InputBindings>
55.     <KeyBinding
56.         Key="Esc"
57.         Command="{Binding BackCommand}"
58.         Modifiers="" />
59. </Window.InputBindings>var page = App.<strong>GetService<BatchAddDictDataPage></strong>();
60. <Window.InputBindings>
61.     <KeyBinding
62.         Key="Esc"
63.         Command="{Binding BackCommand}"
64.         Modifiers="" />
65. </Window.InputBindings>page!.ViewModel.DictType = this.ViewModel.SelectDictType;
66. <Window.InputBindings>
67.     <KeyBinding
68.         Key="Esc"
69.         Command="{Binding BackCommand}"
70.         Modifiers="" />
71. </Window.InputBindings>page!.ViewModel.Item = new BatchAddDictDataDto();
73. <Window.InputBindings>
74.     <KeyBinding
75.         Key="Esc"
76.         Command="{Binding BackCommand}"
77.         Modifiers="" />
78. </Window.InputBindings>//模态对话框打开
79. <Window.InputBindings>
80.     <KeyBinding
81.         Key="Esc"
82.         Command="{Binding BackCommand}"
83.         Modifiers="" />
84. </Window.InputBindings>page.<strong>ShowDialog</strong>();
85. }

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通过GetService的方式获取新的一个窗口对象，并赋值对应的视图模型即可，然后打开模态对话框界面。
如果用户关闭，则会丢弃该对象，下次请求就是一个新的窗口实例了。
另外，我们窗口还可以配置快捷键ESC来关闭窗口，等同于按下关闭按钮的处理。我们在页面的Xaml文件中增加按键的绑定事件即可，如下代码所示。

1. <Window.InputBindings>
2.     <KeyBinding
3.         Key="Esc"
4.         Command="{Binding BackCommand}"
5.         Modifiers="" />
6. </Window.InputBindings>

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其中的BackCommand就是我们预设页面关闭的方法。

1. <Window.InputBindings>
2.     <KeyBinding
3.         Key="Esc"
4.         Command="{Binding BackCommand}"
5.         Modifiers="" />
6. </Window.InputBindings><Window.InputBindings>
7.     <KeyBinding
8.         Key="Esc"
9.         Command="{Binding BackCommand}"
10.         Modifiers="" />
11. </Window.InputBindings>///<Window.InputBindings>
12.     <KeyBinding
13.         Key="Esc"
14.         Command="{Binding BackCommand}"
15.         Modifiers="" />
16. </Window.InputBindings><Window.InputBindings>
17.     <KeyBinding
18.         Key="Esc"
19.         Command="{Binding BackCommand}"
20.         Modifiers="" />
21. </Window.InputBindings> /// 关闭窗体<Window.InputBindings>
22.     <KeyBinding
23.         Key="Esc"
24.         Command="{Binding BackCommand}"
25.         Modifiers="" />
26. </Window.InputBindings><Window.InputBindings>
27.     <KeyBinding
28.         Key="Esc"
29.         Command="{Binding BackCommand}"
30.         Modifiers="" />
31. </Window.InputBindings>///<Window.InputBindings>
32.     <KeyBinding
33.         Key="Esc"
34.         Command="{Binding BackCommand}"
35.         Modifiers="" />
36. </Window.InputBindings><Window.InputBindings>
37.     <KeyBinding
38.         Key="Esc"
39.         Command="{Binding BackCommand}"
40.         Modifiers="" />
41. </Window.InputBindings> [RelayCommand]<Window.InputBindings>
42.     <KeyBinding
43.         Key="Esc"
44.         Command="{Binding BackCommand}"
45.         Modifiers="" />
46. </Window.InputBindings><Window.InputBindings>
47.     <KeyBinding
48.         Key="Esc"
49.         Command="{Binding BackCommand}"
50.         Modifiers="" />
51. </Window.InputBindings>private void Back()<Window.InputBindings>
52.     <KeyBinding
53.         Key="Esc"
54.         Command="{Binding BackCommand}"
55.         Modifiers="" />
56. </Window.InputBindings><Window.InputBindings>
57.     <KeyBinding
58.         Key="Esc"
59.         Command="{Binding BackCommand}"
60.         Modifiers="" />
61. </Window.InputBindings>{<Window.InputBindings>
62.     <KeyBinding
63.         Key="Esc"
64.         Command="{Binding BackCommand}"
65.         Modifiers="" />
66. </Window.InputBindings><Window.InputBindings>
67.     <KeyBinding
68.         Key="Esc"
69.         Command="{Binding BackCommand}"
70.         Modifiers="" />
71. </Window.InputBindings><Window.InputBindings>
72.     <KeyBinding
73.         Key="Esc"
74.         Command="{Binding BackCommand}"
75.         Modifiers="" />
76. </Window.InputBindings>this.Close();<Window.InputBindings>
77.     <KeyBinding
78.         Key="Esc"
79.         Command="{Binding BackCommand}"
80.         Modifiers="" />
81. </Window.InputBindings><Window.InputBindings>
82.     <KeyBinding
83.         Key="Esc"
84.         Command="{Binding BackCommand}"
85.         Modifiers="" />
86. </Window.InputBindings>}

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对于通用的导入窗口，我们也是一样的处理方式，我们通过一些事件的定义，把一些实现逻辑放在调用类上实现也可以的。

1. <Window.InputBindings>
2.     <KeyBinding
3.         Key="Esc"
4.         Command="{Binding BackCommand}"
5.         Modifiers="" />
6. </Window.InputBindings>///<Window.InputBindings>
7.     <KeyBinding
8.         Key="Esc"
9.         Command="{Binding BackCommand}"
10.         Modifiers="" />
11. </Window.InputBindings> /// 导出内容到Excel<Window.InputBindings>
12.     <KeyBinding
13.         Key="Esc"
14.         Command="{Binding BackCommand}"
15.         Modifiers="" />
16. </Window.InputBindings>///<Window.InputBindings>
17.     <KeyBinding
18.         Key="Esc"
19.         Command="{Binding BackCommand}"
20.         Modifiers="" />
21. </Window.InputBindings> [RelayCommand]<Window.InputBindings>
22.     <KeyBinding
23.         Key="Esc"
24.         Command="{Binding BackCommand}"
25.         Modifiers="" />
26. </Window.InputBindings>private void ImportExcel()<Window.InputBindings>
27.     <KeyBinding
28.         Key="Esc"
29.         Command="{Binding BackCommand}"
30.         Modifiers="" />
31. </Window.InputBindings>{<Window.InputBindings>
32.     <KeyBinding
33.         Key="Esc"
34.         Command="{Binding BackCommand}"
35.         Modifiers="" />
36. </Window.InputBindings><Window.InputBindings>
37.     <KeyBinding
38.         Key="Esc"
39.         Command="{Binding BackCommand}"
40.         Modifiers="" />
41. </Window.InputBindings>var page = App.GetService();<Window.InputBindings>
42.     <KeyBinding
43.         Key="Esc"
44.         Command="{Binding BackCommand}"
45.         Modifiers="" />
46. </Window.InputBindings><Window.InputBindings>
47.     <KeyBinding
48.         Key="Esc"
49.         Command="{Binding BackCommand}"
50.         Modifiers="" />
51. </Window.InputBindings>page!.ViewModel.Items?.Clear();<Window.InputBindings>
52.     <KeyBinding
53.         Key="Esc"
54.         Command="{Binding BackCommand}"
55.         Modifiers="" />
56. </Window.InputBindings><Window.InputBindings>
57.     <KeyBinding
58.         Key="Esc"
59.         Command="{Binding BackCommand}"
60.         Modifiers="" />
61. </Window.InputBindings>page!.ViewModel.TemplateFile = $"系统用户信息-模板.xls";[b]<Window.InputBindings>
62.     <KeyBinding
63.         Key="Esc"
64.         Command="{Binding BackCommand}"
65.         Modifiers="" />
66. </Window.InputBindings><Window.InputBindings>
67.     <KeyBinding
68.         Key="Esc"
69.         Command="{Binding BackCommand}"
70.         Modifiers="" />
71. </Window.InputBindings>page[/b][b]!.OnDataSave -= ExcelData_OnDataSave;<Window.InputBindings>
72.     <KeyBinding
73.         Key="Esc"
74.         Command="{Binding BackCommand}"
75.         Modifiers="" />
76. </Window.InputBindings><Window.InputBindings>
77.     <KeyBinding
78.         Key="Esc"
79.         Command="{Binding BackCommand}"
80.         Modifiers="" />
81. </Window.InputBindings>page!.OnDataSave += ExcelData_OnDataSave;<Window.InputBindings>
82.     <KeyBinding
83.         Key="Esc"
84.         Command="{Binding BackCommand}"
85.         Modifiers="" />
86. </Window.InputBindings><Window.InputBindings>
87.     <KeyBinding
88.         Key="Esc"
89.         Command="{Binding BackCommand}"
90.         Modifiers="" />
91. </Window.InputBindings>[/b]//模态对话框打开<Window.InputBindings>
92.     <KeyBinding
93.         Key="Esc"
94.         Command="{Binding BackCommand}"
95.         Modifiers="" />
96. </Window.InputBindings><Window.InputBindings>
97.     <KeyBinding
98.         Key="Esc"
99.         Command="{Binding BackCommand}"
100.         Modifiers="" />
101. </Window.InputBindings>page.ShowDialog();<Window.InputBindings>
102.     <KeyBinding
103.         Key="Esc"
104.         Command="{Binding BackCommand}"
105.         Modifiers="" />
106. </Window.InputBindings>}

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例如上面红色部分的事件，我们就是放在调用类中差异化处理。

这样就可以差异化不同的内容，同时保留通用模块的灵活性，导入界面如下所示。

 

来源:https://www.cnblogs.com/wuhuacong/archive/2023/09/21/17720116.html
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