01
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前言
目前最新的PRISM的版本是8.1.97,本節以6.3.0.0 講解,可以在Github上獲取PRISM的源碼。
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Prism Github地址:https://github.com/PrismLibrary/Prism
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Prism官方文檔:https://prismlibrary.com/docs/
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Prism要用到IOC容器,提供選擇的有Unity和MEF,這里我分別采用MEF和unity去做,不懂MEF的建議看看這位大牛的系列博文http://www.cnblogs.com/yunfeifei/p/3922668.html
02
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安裝庫
在nuget上安裝Prism相關常用的庫

03
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項目搭建
step1:新建解決方案:我這里命名為PrismFrameTest;
step2:刪除MainWindow.xaml,刪除App.xaml中啟動引導
StartupUri="MainWindow.xaml"
然后在App.xaml.cs新建程序入口
protected override void OnStartup(StartupEventArgs e)
{
base.OnStartup(e);
MyBootstrapper bootStrapper = new MyBootstrapper();
bootStrapper.Run(true);
}
新建引導類MyBootstrapper.cs,需要繼承基類Prism.Mef庫下的基類MefBootstrapper
方式1 采用mef
public class MyBootstrapper : MefBootstrapper
{
protected override DependencyObject CreateShell()
{
return this.Container.GetExportedValue<MyShellView>();
}
protected override void InitializeShell()
{
base.InitializeShell();
Application.Current.MainWindow = (MyShellView)this.Shell;
Application.Current.MainWindow.Show();//Show主窗口,但content內沒有內容,只有當調用Module中的Initialize()方法后才將HelloWorldView顯示出來。
}
protected override void ConfigureAggregateCatalog()
{
base.ConfigureAggregateCatalog();
this.AggregateCatalog.Catalogs.Add(new AssemblyCatalog(typeof(MyBootstrapper).Assembly));
this.AggregateCatalog.Catalogs.Add(new AssemblyCatalog(typeof(PrismModuleLeft.ModuleLeftViewModel).Assembly));//注冊模塊
//this.AggregateCatalog.Catalogs.Add(new AssemblyCatalog(typeof(ModuleB.ModuleBViewModel).Assembly));
}
protected override IModuleCatalog CreateModuleCatalog()
{
// When using MEF, the existing Prism ModuleCatalog is still the place to configure modules via configuration files.
return new ConfigurationModuleCatalog();
}
}
方式2 采用unity
public class MyBootstrapper : UnityBootstrapper
{
protected override DependencyObject CreateShell()
{
return Container.Resolve<MyShellView>();
}
protected override void InitializeShell()
{
base.InitializeShell();
Application.Current.MainWindow = (MyShellView)this.Shell;
Application.Current.MainWindow.Show();//Show主窗口,但content內沒有內容,只有當調用Module中的Initialize()方法后才將HelloWorldView顯示出來。
}
protected override void ConfigureModuleCatalog()
{
base.ConfigureModuleCatalog();
ModuleCatalog moduleCatalog = (ModuleCatalog)this.ModuleCatalog;
moduleCatalog.AddModule(typeof(PrismModuleLeft.ModuleLeftViewModel));//注冊模塊
}
}
step3:
然后新建一個xaml窗體MyShellView.xaml,將窗體分為左右兩部分
這里cal:RegionManager.RegionName是一個依賴屬性,我們將它與ItemsControl控件相關聯,MainRegion就是一個占位符。
<ItemsControl cal:RegionManager.RegionName="RegionLeft" HorizontalAlignment="Center" VerticalAlignment="Center"/> <ItemsControl cal:RegionManager.RegionName="RegionRight" HorizontalAlignment="Center" VerticalAlignment="Center" Grid.Column="1"/>
對應的cs中將類標注為 [Export]
step4:新建類庫PrismModuleLeft
類庫中新建ModuleLeftView.xaml
關於事件綁定:(在下面代碼中兩種方式都列出來了)
①控件繼承自ButtonBase、MenuItem類,比如:Button、RadioButton、Hyperlink、MenuItem……這種情況下,由於Prism已經幫我們實現了這些控件的Command屬性,可以直接綁定Command屬性來完成Click事件到ViewModel的綁定:
②ListView、ListBox、DropDownList等等大部分沒有Click事件的控件。這時候,當我們要實現SelectedItemChanged、SelectionChanged等常用事件的時候,使用Expression Blend附帶的System.Windows.Interactivity.dll文件,它使用interaction trigger和InvokeCommandAction behavior來幫助我們直接綁定控件的事件。
需要引用
xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity"
<Grid>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Foreground="Red" FontSize="20" Text="{Binding TxtLabel}" Background="Gray" Grid.Row="0"/>
<Button Background="LightCyan" Name="CreateRecipe" Command="{Binding CreateRecipeCommand}" Content="BtnCtr" FontSize="20" Grid.Row="1">
<i:Interaction.Triggers >
<i:EventTrigger EventName="PreviewKeyDown">
<i:InvokeCommandAction Command="{Binding KeyUpEventCommand}" />
</i:EventTrigger>
</i:Interaction.Triggers>
</Button>
</Grid>
對應的cs中:
[Export]
public partial class ModuleLeftView : UserControl
{
private readonly IRegionViewRegistry regionViewRegistry;
public ModuleLeftView()
{
InitializeComponent();
this.DataContext = new ModuleLeftViewModel(regionViewRegistry);
}
}
step4:ModuleLeftViewModel中:
using Prism.Commands;
using Prism.Mef.Modularity;
using Prism.Modularity;
using Prism.Mvvm;
using Prism.Regions;
using PropertyChanged;
using System.ComponentModel.Composition;
using System.Windows;
using System.Windows.Input;
namespace PrismModuleLeft
{
[AddINotifyPropertyChangedInterface]
[ModuleExport("ModuleLeftViewModel", typeof(ModuleLeftViewModel), InitializationMode = InitializationMode.WhenAvailable)]
public class ModuleLeftViewModel : BindableBase,IModule
{
private readonly IRegionViewRegistry regionViewRegistry;
public ICommand CreateRecipeCommand { get; set; }
public DelegateCommand<KeyEventArgs> KeyUpEventCommand { get; private set; }
public string TxtLabel { get; set; } = "Hello! I am ModuleA";
public void KeyUpEventHandler(KeyEventArgs args)
{
MessageBox.Show("PrismCTR");
}
public void Initialize()
{
regionViewRegistry.RegisterViewWithRegion("RegionLeft", typeof(ModuleLeftView));
}
[ImportingConstructor]
public ModuleLeftViewModel(IRegionViewRegistry registry)
{
this.regionViewRegistry = registry;
CreateRecipeCommand = new DelegateCommand(() => CreateRecipe());
}
public void CreateRecipe()
{
TxtLabel = "this is my first prism test example";
MessageBox.Show(TxtLabel);
}
}
}
04
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總結
這個時候我們來對PRISM的基礎架構做一個簡單的總結:
Shell: 主窗口,他的功能都是通過Module來實現的;
Bootstrapper: 應用程序的入口點;
Region: 內容區域,類似於一個占位符
Module: 真正實現業務功能的東西,是View,數據,模型組成的集合;
Prism是個非常強大的wpf mvvm模式框架,它使用依賴注入,控制反轉容器來幫助我們解決團隊合作的松耦合問題。
05
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結果演示

05
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源碼
鏈接:https://pan.baidu.com/s/1utVT-087R1WonjoHZrv_Iw
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