Prism：打造WPF项目的MVVM之选，简化开发流程、提高可维护性
概述：探索WPF开发新境界，借助Prism MVVM库，实现模块化、可维护的项目。强大的命令系统、松耦合通信、内置导航，让您的开发更高效、更流畅
在WPF开发中，一个优秀的MVVM库是Prism。以下是Prism的优点以及基本应用示例：
优点：
[*]模块化设计： Prism支持模块化开发，使项目更易维护和扩展。
[*]强大的命令系统： 提供了DelegateCommand等强大的命令实现，简化了用户交互操作的绑定。
[*]松耦合的通信： 通过EventAggregator实现松耦合的组件间通信，提高了代码的可维护性。
[*]内置导航系统： 提供了灵活的导航框架，支持导航到不同的视图和传递参数。
使用步骤：
1. 安装Prism NuGet包
在项目中执行以下命令：
Install-Package Prism.Wpf2. 创建ViewModel
using Prism.Mvvm;
public class MainViewModel : BindableBase
{
private string _message;
public string Message
{
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>get { return _message; }
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>set { SetProperty(ref _message, value); }
}
}3. 创建View
<Window x:
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>xmlns:prism="http://prismlibrary.com/"
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>prism:ViewModelLocator.AutoWireViewModel="True"
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>mc:Ignorable="d"
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>Title="MainWindow" Height="350" Width="525">
<Grid>
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid><TextBlock Text="{Binding Message}" />
</Grid>
</Window>4. 注册ViewModel
在App.xaml.cs中注册ViewModel：
using Prism.Ioc;
using Prism.Unity;
using YourNamespace.Views;
namespace YourNamespace
{
public partial class App : PrismApplication
{
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>protected override Window CreateShell()
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>{
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid> return Container.Resolve<MainWindow>();
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>}
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>protected override void RegisterTypes(IContainerRegistry containerRegistry)
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>{
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid> containerRegistry.RegisterForNavigation<YourView>();
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>}
}
}5. 在View中使用ViewModel
<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>6. 在ViewModel中处理命令
using Prism.Commands;public class MainViewModel : BindableBase{ private string _message; public string Message {<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>get { return _message; }<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>set { SetProperty(ref _message, value); } } public DelegateCommand UpdateMessageCommand { get; } public MainViewModel() {<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>UpdateMessageCommand = new DelegateCommand(UpdateMessage); } private void UpdateMessage() {<Grid>
<TextBlock Text="{Binding Message}" />
<Button Command="{Binding UpdateMessageCommand}" Content="Update Message" />
</Grid>Message = "Hello, Prism!"; }}以上是使用Prism的基本示例。Prism提供了更多的功能，如模块化开发、事件聚合器、导航框架等，以帮助构建结构良好、可维护的WPF应用。
来源:https://www.cnblogs.com/hanbing81868164/p/17995756
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