WPF MVVM框架 Prism 导航_xaml_App_com

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WPF MVVM框架Prism导航菜单

作者：WPFDevelopersOrg - 驚鏵

原文链接 [1]：https://github.com/yanjinhuagood/WpfPrismNavigation

码云链接 [2]：https://gitee.com/yanjinhua/WpfPrismNavigation

框架使用 .NET60；

Visual Studio 2022;

1）新建一个WPF项目，导入Prism Nuget包,如图：

安装 Prism.Unity包

新建 Views与 ViewModels文件夹

2）重写App.xaml

添加命名空间 xmlns:prism="http://prismlibrary.com/"

记得删除 StartupUri="MainWindow.xaml"

< prism:PrismApplication x:Class = "WpfPrismNavigation.App"

xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:prism = "http://prismlibrary.com/"

xmlns:local = "clr-namespace:WpfPrismNavigation" >

< Application.Resources >

</ Application.Resources >

</ prism:PrismApplication >

3）修改App.xaml.cs

需要必须实现的抽象方法： RegisterTypes和 CreateShell。

using Prism.DryIoc;

using Prism.Ioc;

using System.Windows;

namespace WpfPrismNavigation

{

/// <summary>

/// Interaction logic for App.xaml

/// </summary>

public partial class App : PrismApplication

{

protected override Window CreateShell ( )

{

throw new System.NotImplementedException;

}

protected override void RegisterTypes ( IContainerRegistry containerRegistry )

{

throw new System.NotImplementedException;

}

实现 CreateShell方法。这是创建应用程序主窗口的方法。应使用 App类的 Container属性来创建窗口，因为它负责处理任何依赖项。

protected override Window CreateShell ( )

{

var w = Container.Resolve<MainWindow>;

return w;

}

实现 RegisterTypes应用程序中所有需要切换的界面进行注册。

Views文件夹下新建了两个 UserControl Home、Edge并在 RegisterTypes进行注册。

ViewModels文件夹下新建了两个 VM HomeViewModel、EdgeViewModel进行注册。

protected override void RegisterTypes ( IContainerRegistry containerRegistry )

{

containerRegistry.RegisterForNavigation<Home, HomeViewModel>;

containerRegistry.RegisterForNavigation<Edge, EdgeViewModel>;

}

按下 F5启动看看是否报错

4）修改MainWindow.xaml

添加命名空间 xmlns:prism="http://prismlibrary.com/"

设置 prism:ViewModelLocator.AutoWireViewModel="True" Prism框架会根据规则自动查找该视图相对应ViewModel。

使用了 WPFDevelopers中的 DrawerMenu进行切换菜单。

< wd:Window

x:Class = "WpfPrismNavigation.Views.MainWindow"

xmlns = "http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x = "http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:i = "http://schemas.microsoft.com/xaml/behaviors"

xmlns:prism = "http://prismlibrary.com/"

xmlns:vm = "clr-namespace:WpfPrismNavigation.ViewModels"

xmlns:wd = "https://github.com/WPFDevelopersOrg/WPFDevelopers"

Title = "Prism - Navigation"

Width = "800"

Height = "450"

prism:ViewModelLocator.AutoWireViewModel = "True" >

< Grid >

< Grid.ColumnDefinitions >

< ColumnDefinition Width = "Auto" />

< ColumnDefinition />

</ Grid.ColumnDefinitions >

< wd:DrawerMenu SelectedItem = "{Binding SelectedItem}" >

< i:Interaction.Triggers >

< i:EventTrigger EventName = "SelectionChanged" >

< i:InvokeCommandAction Command = "{Binding SelectionChangedCommand}" CommandParameter = "" />

</ i:EventTrigger >

</ i:Interaction.Triggers >

< wd:DrawerMenuItem Text = "Home" >

< wd:DrawerMenuItem.Icon >

< wd:PathIcon Kind = "Home" />

</ wd:DrawerMenuItem.Icon >

</ wd:DrawerMenuItem >

< wd:DrawerMenuItem Text = "Edge" >

< wd:DrawerMenuItem.Icon >

< wd:PathIcon Data = "M511.949 40.96c-260.147 0-470.989 210.893-470.989 471.091 0 260.096 210.842 470.989 470.989 470.989s471.040-210.893 471.040-470.989c0-260.198-210.893-471.091-471.040-471.091zM512 665.651c-84.838 0-153.6-68.813-153.6-153.6s68.762-153.6 153.6-153.6c84.787 0 153.6 68.813 153.6 153.6s-68.813 153.6-153.6 153.6z" />

</ wd:DrawerMenuItem.Icon >

</ wd:DrawerMenuItem >

</ wd:DrawerMenu >

< ContentControl Grid.Column = "1" prism:RegionManager.RegionName = "ContentRegion" />

</ Grid >

</ wd:Window >

5）选中ViewModels文件右键创建MainWindowViewModel继承BindableBase

使用 RegionManager上调用 RequestNavigate方法，该方法允许您指定要导航的区域。

使用 RegionManager上的 RegisterViewWithRegion加载 View。

使用 RegionManager上的 RequestNavigate导航菜单。

using Prism.Commands;

using Prism.Mvvm;

using Prism.Regions;

using System;

using WPFDevelopers.Controls;

using WpfPrismNavigation.Views;

namespace WpfPrismNavigation.ViewModels

{

public class MainWindowViewModel : BindableBase

{

private DrawerMenuItem _selectedItem;

public DrawerMenuItem SelectedItem

{

get { return _selectedItem; }

set { SetProperty( ref _selectedItem, value ); }

}

public DelegateCommand SelectionChangedCommand { get ; }

private readonly IRegionManager _regionManager;

public MainWindowViewModel ( IRegionManager regionManager )

{

_regionManager = regionManager;

_regionManager.RegisterViewWithRegion( "ContentRegion" , typeof (Home));

SelectionChangedCommand = new DelegateCommand(UpdateRegionViews);

}

void UpdateRegionViews ( )

{

if (SelectedItem != null && ! string .IsNullOrWhiteSpace(SelectedItem.Text))

_regionManager.RequestNavigate( "ContentRegion" , new Uri(SelectedItem.Text, UriKind.Relative));

}

参考资料

[1]

原文链接: https://github.com/yanjinhuagood/WpfPrismNavigation

[2]

码云链接: https://gitee.com/yanjinhua/WpfPrismNavigation 返回搜狐，查看更多

责任编辑：