MVVM示例步调

目次
一 界说可关照属性
二 界说前端并绑定
三 运行结果

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一 界说可关照属性

1. internal class MainViewModel : ObservableObject
2. {
3.      /// <summary>
4.      /// 供前端的Command命令Binding调用
5.      /// </summary>
6.      public RelayCommand ShowCommand { get; set; }
8.      public MainViewModel()
9.      {
10.          ShowCommand = new RelayCommand(Show);
11.      }
12.      private string name;
13.      public string Name
14.      {
15.          get { return name; }
16.          set { name = value; OnPropertyChanged(); }
17.      }
18.      private string title;
19.      public string Title
20.      {
21.          get { return title; }
22.          set { title = value; OnPropertyChanged(); }
23.      }
25.      public void Show()
26.      {
27.          Title = "你点击了按钮 this is Title";
28.          Name = "你点击了按钮  this is Name";
29.          MessageBox.Show(Name);
30.          WeakReferenceMessenger.Default.Send<string, string>(Title, "Token1");
31.      }
32. }

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二 界说前端并绑定

1. <Window x:Class="ToolKitMVVMTest.MainWindow"
2.         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
3.         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
4.         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
5.         xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
6.         xmlns:local="clr-namespace:ToolKitMVVMTest"
7.         mc:Ignorable="d"
8.         Title="MainWindow" Height="450" Width="800">
9.     <Grid>
10.         <TextBox HorizontalAlignment="Left" Margin="145,52,0,0" TextWrapping="Wrap" Text="{Binding Name}" VerticalAlignment="Top" Width="517" Height="189"/>
11.         <Button Content="Button" HorizontalAlignment="Left" Margin="245,294,0,0" VerticalAlignment="Top" Height="72" Width="278" Command="{Binding ShowCommand}"/>
13.     </Grid>
15. </Window>

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1. /// <summary>
2. /// Interaction logic for MainWindow.xaml
3. /// </summary>
4. public partial class MainWindow : Window
5. {
6.      public MainWindow()
7.      {
8.          InitializeComponent();
9.          this.DataContext = new MainViewModel();
10.          WeakReferenceMessenger.Default.Register<string, string>(this, "Token1", (s, val) =>
11.          {
12.              MessageBox.Show(val);
13.          });
15.      }
16. }

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三 运行结果