• Prism框架的Regions使用


    Prism框架的Regions,可以把用户控件、窗体等附加到主窗体指定的控件中。

    【实战1】

    1、新建Prism Blank App(WPF) 项目:Demo0810

    Views文件夹处,鼠标右键——添加——新建项——Prism——Prism UserControl(WPF),名称默认

    MainWindow.xaml.cs代码:

    using System.Windows;
    using Prism.Regions; //引入Regions
    
    namespace Demo0810.Views
    {
        public partial class MainWindow : Window
        {
            public MainWindow(IRegionManager regionManager) //定义变量
            {
                InitializeComponent();
                //将PrismUserControl1用户控件加载到主窗体的ContenRegion控件中
                regionManager.RegisterViewWithRegion("ContentRegion", typeof(PrismUserControl1)); 
                ////或者
                //PrismUserControl1 viewA = new PrismUserControl1(); //new出一个类的对象
                //_regionManager.AddToRegion("ContentRegion", viewA);
            }
        }
    }

    PrismUserControl1.xaml代码:其他文件原封不动

    <UserControl x:Class="Demo0810.PrismUserControl1"
                 xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                 xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                 xmlns:prism="http://prismlibrary.com/"             
                 prism:ViewModelLocator.AutoWireViewModel="True">
        <Grid>
            <TextBlock Text="View A" FontSize="38" />
        </Grid>
    </UserControl>

     或者MainWindow.xaml.cs不更改(保持极简纯粹),更改MainWindowViewModel.cs的代码:推荐

    using Prism.Mvvm;
    using Prism.Regions; //引入Regions
    
    namespace Demo0810.ViewModels
    {
        public class MainWindowViewModel : BindableBase
        {
            private string _title = "Prism Application";
            public string Title
            {
                get { return _title; }
                set { SetProperty(ref _title, value); }
            }       
            public MainWindowViewModel(RegionManager regionManager) //定义变量
            {
                //将PrismUserControl1用户控件加载到主窗体的ContenRegion控件中
                regionManager.RegisterViewWithRegion("ContentRegion", typeof(PrismUserControl1));
                ////或者
                //PrismUserControl1 viewA = new PrismUserControl1(); //new出一个类的对象
                //_regionManager.AddToRegion("ContentRegion", viewA);
            }
        }
    }

     【实战2】仿照实战1新建项目Demo08101、添加用户控件PrismUserControl1.cs

    主窗体界面前端代码MainWindow.xaml:

    <Window x:Class="Demo08101.Views.MainWindow"
            xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
            xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
            xmlns:prism="http://prismlibrary.com/"
            prism:ViewModelLocator.AutoWireViewModel="True"
            Title="{Binding Title}" Height="350" Width="525">
        <DockPanel LastChildFill="True">
            <Button Command="{Binding ShowCommand}" DockPanel.Dock="Top" >Add View</Button>
            <ContentControl prism:RegionManager.RegionName="ContentRegion" />
        </DockPanel>
    </Window>

    MainWindowViewModel.cs代码:其他文件原封不动

    using System;
    using Prism.Mvvm;
    using Prism.Commands;
    using Prism.Regions;
    using Demo08101.Views;
    
    namespace Demo08101.ViewModels
    {
        public class MainWindowViewModel : BindableBase
        {
            private string _title = "Prism Application";
            public string Title //数据属性
            {
                get { return _title; }
                set { SetProperty(ref _title, value); }
            }
            public DelegateCommand ShowCommand { get; set; } //命令属性
    
            IRegionManager _regionManager; //定义变量
            public void Show() //方法,展示用户控件到指定的主窗体控件中
            {            
                _regionManager.RegisterViewWithRegion("ContentRegion", typeof(PrismUserControl1));
                ////或者
                //PrismUserControl1 viewA = new PrismUserControl1(); //new出一个类的对象
                //_regionManager.AddToRegion("ContentRegion", viewA);
            }
    
            public MainWindowViewModel(IRegionManager regionManager)
            {
                _regionManager = regionManager; //赋值
                this.ShowCommand = new DelegateCommand(new Action(Show)); //命令属性关联方法
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/xixixing/p/11330754.html
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