wpf prism 数据绑定_prism binding wpf

1 新建wpf应用程序

2 添加prism.unity（v8.0）的引用

3 新建Views文件夹讲MainWindow拖到该文件夹中，修改MainWindow.xaml和MainWindow.xaml.cs 注意要修改相关命名空间（3处）

<Window x:Class="PrismBindingDemo.Views.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:PrismBindingDemo.Views"
        xmlns:prism="http://prismlibrary.com/"
        mc:Ignorable="d"
        Title="MainWindow" Height="450" Width="800" prism:ViewModelLocator.AutoWireViewModel="True">
    <StackPanel>
        <TextBox Text="{Binding Text}" Margin="10" Height="100" FontSize="50" Foreground="Black" BorderBrush="Black"/>
        <Button  Height="100" Width="300" Content="Click Me" FontSize="50" Command="{Binding ClickCommnd}"/>
    </StackPanel>
</Window>

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
 
namespace PrismBindingDemo.Views
{
    /// <summary>
    /// MainWindow.xaml 的交互逻辑
    /// </summary>
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
        }
    }
}

4 添加ViewModels文件夹 ，添加类MainWindowViewModel

using Prism.Commands;
using Prism.Mvvm;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
 
namespace PrismBindingDemo.ViewModels
{
    public class MainWindowViewModel: BindableBase
    {
        private string _text;
        public string Text
        {
            get { return _text; }
            set { SetProperty(ref _text, value); }
        }
 
        private DelegateCommand _clickCommnd;
        public DelegateCommand ClickCommnd =>
            _clickCommnd ?? (_clickCommnd = new DelegateCommand(ExecuteClickCommnd));
 
        void ExecuteClickCommnd()
        {
            this.Text = "Click Me！";
        }
 
        public MainWindowViewModel()
        {
            this.Text = "Hello Prism!";
        }
    }
}

5 修改App.xaml和App.xaml.cs

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

using Prism.Unity;
using System;
using System.Collections.Generic;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Threading.Tasks;
using System.Windows;
using Prism.Ioc;
using PrismBindingDemo.Views;
 
namespace PrismBindingDemo
{
    /// <summary>
    /// App.xaml 的交互逻辑
    /// </summary>
    public partial class App : PrismApplication
    {
        protected override Window CreateShell()
        {
            return Container.Resolve<MainWindow>();
        }
 
        protected override void RegisterTypes(IContainerRegistry containerRegistry)
        {
            
        }
    }
}

6 运行

7 以上视图xxx.xaml放在Views目录下，对应的xxxViewModel.cs放在ViewModels目录下是默认设置，如果更改了以上目录则需要在App.xaml.cs中重写ConfigureViewModelLocator（）

 protected override void ConfigureViewModelLocator()
        {
            base.ConfigureViewModelLocator();
            ViewModelLocationProvider.SetDefaultViewTypeToViewModelTypeResolver((viewType) =>
            {
                var viewName = viewType.FullName.Replace(".Viewsb.", ".ViewModelsa.OhMyGod.");
                var viewAssemblyName = viewType.GetTypeInfo().Assembly.FullName;
                var viewModelName = $"{viewName}Test, {viewAssemblyName}";
                return Type.GetType(viewModelName);
            });
        }

8  自定义ViewModel注册

using Prism.Commands;
using Prism.Mvvm;
 
namespace PrismSample
{
   public class Foo:BindableBase
    {
 
        private string _text;
        public string Text
        {
            get { return _text; }
            set { SetProperty(ref _text, value); }
        }
 
        public Foo()
        {
            this.Text = "Foo";
        }
 
        private DelegateCommand _clickCommnd;
        public DelegateCommand ClickCommnd =>
            _clickCommnd ?? (_clickCommnd = new DelegateCommand(ExecuteClickCommnd));
 
        void ExecuteClickCommnd()
        {
            this.Text = "Oh My God！";
        }
    }
}

App.xaml.cs中重写ConfigureViewModelLocator的方法 

protected override void ConfigureViewModelLocator()
        {
            base.ConfigureViewModelLocator();
            ViewModelLocationProvider.Register<MainWindow, Foo>();
            //ViewModelLocationProvider.SetDefaultViewTypeToViewModelTypeResolver((viewType) =>
            //{
            //    var viewName = viewType.FullName.Replace(".Viewsb.", ".ViewModelsa.OhMyGod.");
            //    var viewAssemblyName = viewType.GetTypeInfo().Assembly.FullName;
            //    var viewModelName = $"{viewName}Test, {viewAssemblyName}";
            //    return Type.GetType(viewModelName);
            //});
        }