Prism框架学习

一、使用prism框架

1.建立一个项目，使用.net5.0框架

2.在nuget中输入prism，然后选择prism.DryIoc安装

3. 打开App.xaml.cs文件，继承PrismApplication


using Prism.DryIoc;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
 
namespace WPFPrism
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : PrismApplication
    {
    }
}

4.打开App.xaml文件，进行引用prism和修改


<prism:PrismApplication x:Class="WPFPrism.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:WPFPrism"
             xmlns:prism="http://prismlibrary.com/"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
         
    </Application.Resources>
</prism:PrismApplication>

这里把 StartupUri="MainWindow.xaml"删除，否则会启动2个窗口

5.重新编译后，点击实现抽象类


using Prism.DryIoc;
using Prism.Ioc;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
 
namespace WPFPrism
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : PrismApplication
    {
        protected override Window CreateShell()
        {
            //通过容器去拿Window
            return Container.Resolve<MainWindow>();
        }
 
        protected override void RegisterTypes(IContainerRegistry containerRegistry)
        {
            //依赖注入的功能，增加依赖注入要实现的内容
 
        }
    }
}

注意：建立项目的时候不要包含.Prism，一开始我就进坑了

6. 界面随便拖动一个控件，点击运行，效果

拓展：

使用模板建立速度更加的快。

这里是vs2022

1.在拓展中搜素prism

下载第一个

2.进行安装

3.安装完成，需要重启vs2022，可以选择建立一个空项目

选择容器

4.项目文件预览

使用模板这里已经把需要修改的都修改完了。

二、prism区域介绍

1.首先进行布局

业务，点击按钮，弹框对应的区域窗体


<Window x:Class="WPFPrism.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:local="clr-namespace:WPFPrism"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800">
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition />
        </Grid.RowDefinitions>
        <StackPanel Orientation="Horizontal" >
            <Button Content="打开模块A" Margin="5"/>
            <Button Content="打开模块B" Margin="5"/>
            <Button Content="打开模块C" Margin="5"/>
        </StackPanel>
        <ContentControl Grid.Row="1" />
    </Grid>
</Window>

2.建立3个窗体


<UserControl x:Class="WPFPrism.Views.ViewA"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:WPFPrism.Views"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800">
    <Grid>
        <TextBlock Text="我是A" FontSize="50"/>
    </Grid>
</UserControl>

A，B，C窗体代码以此类推

3. 建立MainViewModle类


using Prism.Commands;
using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace WPFPrism.ViewModels
{
    public class MainViewModle : BindableBase
    {
        public DelegateCommand<string> OpenCommand { get; set; }
        public MainViewModle()
        {
            OpenCommand = new DelegateCommand<string>(Open);
        }
 
        private void Open(string obj)
        {
            throw new NotImplementedException();
        }
    }
 
}

4.在主界面增加RegionManager

 <ContentControl Grid.Row="1" prism:RegionManager.RegionName="Content" />

5.修改MainViewModle类


using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WPFPrism.Views;
 
namespace WPFPrism.ViewModels
{
    public class MainViewModel : BindableBase
    {
        private readonly IRegionManager regionManager;
 
        public DelegateCommand<string> OpenCommand { get;  set; }//创建命令，string用来接收参数，例如ViewA
        public MainViewModel(IRegionManager regionManager)//这里点击快速操作。拿界面定义的区域Content
        {
            OpenCommand = new DelegateCommand<string>(Open);
            this.regionManager = regionManager;//拿到这个值
        }
 
 
        private void Open(string obj)
        {
            regionManager.Regions["Content"].RequestNavigate(obj);//这里需要依赖注入的方式
        }
    }
 
}

注意：

文件夹下面的的层级，不能少了

例如：

<Window x:Class="WPFPrism.Views.MainView">

不能漏写Views文件夹的名字

因为MVVM修改代码的时候，不是顺序常规性的，总是前面改了，再改后面，所以导致前面的代码和成型的代码差异很大。

总体代码结构：

MainViewModel.cs


using Prism.Commands;
using Prism.Mvvm;
using Prism.Regions;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using WPFPrism.Views;
 
namespace WPFPrism.ViewModels
{
    public class MainViewModel : BindableBase
    {
        private readonly IRegionManager regionManager;
 
        public DelegateCommand<string> OpenCommand { get;  set; }//创建命令，string用来接收参数，例如ViewA
        public MainViewModel(IRegionManager regionManager)//这里点击快速操作。拿界面定义的区域Content
        {
            OpenCommand = new DelegateCommand<string>(Open);
            this.regionManager = regionManager;//拿到这个值
        }
 
 
        private void Open(string obj)
        {
            regionManager.Regions["Content"].RequestNavigate(obj);//这里需要依赖注入的方式
        }
    }
 
}

MainView.xaml


<Window x:Class="WPFPrism.Views.MainView"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
        xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
        xmlns:prism="http://prismlibrary.com/"
        prism:ViewModelLocator.AutoWireViewModel="True"
        xmlns:local="clr-namespace:WPFPrism"
        mc:Ignorable="d"
        Title="MainView" Height="450" Width="800">
    <!--自动关联AutoWireViewModel-->
    <Grid>
        <Grid.RowDefinitions>
            <RowDefinition Height="auto"/>
            <RowDefinition />
        </Grid.RowDefinitions>
        <StackPanel Orientation="Horizontal" >
            <Button Content="打开模块A" Margin="5" Command="{Binding OpenCommand}" CommandParameter="ViewA"/>
            <Button Content="打开模块B" Margin="5" Command="{Binding OpenCommand}" CommandParameter="ViewB"/>
            <Button Content="打开模块C" Margin="5" Command="{Binding OpenCommand}" CommandParameter="ViewC"/>
        </StackPanel>
        <ContentControl Grid.Row="1" prism:RegionManager.RegionName="Content" />
    </Grid>
</Window>

ViewA.xaml B C同理


<UserControl x:Class="WPFPrism.Views.ViewA"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
             xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
             xmlns:local="clr-namespace:WPFPrism.Views"
             mc:Ignorable="d" 
             d:DesignHeight="450" d:DesignWidth="800" Background="Red">
    <Grid>
        <TextBlock Text="我是A" FontSize="50"/>
    </Grid>
</UserControl>

App.xaml


<prism:PrismApplication x:Class="WPFPrism.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:WPFPrism"
             xmlns:prism="http://prismlibrary.com/">
    <Application.Resources>
         
    </Application.Resources>
</prism:PrismApplication>

App.xaml.cs


using Prism.DryIoc;
using Prism.Ioc;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using WPFPrism.Views;
 
namespace WPFPrism
{
    /// <summary>
    /// Interaction logic for App.xaml
    /// </summary>
    public partial class App : PrismApplication
    {
        protected override Window CreateShell()
        {
            //通过容器去拿MainView,也是启动的地方
            return Container.Resolve<MainView>();
        }
 
        protected override void RegisterTypes(IContainerRegistry containerRegistry)
        {
            //依赖注入的功能，增加依赖注入要实现的内容
            containerRegistry.RegisterForNavigation<ViewA>(); //containerRegistry.RegisterForNavigation<ViewA>("ViewA的具体名字")自定义，可以这样写;
            containerRegistry.RegisterForNavigation<ViewB>();
            containerRegistry.RegisterForNavigation<ViewC>();
        }
    }
}

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原文地址：https://blog.csdn.net/u012563853/article/details/124987710