WPF使用RoutedCommand自己定义命令

主要代码例如以下所看到的：

/// <summary>
/// 声明并定义命令。
/// </summary>
RoutedCommand ClearCommand = new RoutedCommand("Clear", typeof(MainWindow));

/// <summary>
/// 初始化命令。崔有来 2014-7-30 06:23:10
/// </summary>
void InitializeCommand()
{
    // 为命令设置快捷键。
    this.ClearCommand.InputGestures.Add(new KeyGesture(Key.C, ModifierKeys.Alt));

    // 将命令赋给命令源。

this.Button1.Command = this.ClearCommand; // 指定命令目标。 this.Button1.CommandTarget = this.TextBoxA; // 创建命令关联并安置在外围控件上。 CommandBinding cb = new CommandBinding(); cb.Command = this.ClearCommand; cb.CanExecute += new CanExecuteRoutedEventHandler(cb_CanExecute); cb.Executed += new ExecutedRoutedEventHandler(cb_Executed); this.StackPanel1.CommandBindings.Add(cb); } /// <summary> /// 当命令送达目标后运行该方法。崔有来 2014-7-30 06:27:16 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> void cb_Executed(object sender, ExecutedRoutedEventArgs e) { this.TextBoxA.Clear(); e.Handled = true; } /// <summary> /// 当探測命令是否可运行时调用该方法。崔有来 2014-7-30 06:26:20 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> void cb_CanExecute(object sender, CanExecuteRoutedEventArgs e) { if (string.IsNullOrEmpty(this.TextBoxA.Text) == true) e.CanExecute = false; else e.CanExecute = true; e.Handled = true; }