c# - 将Button的事件订阅到自定义控件中

Question

你知道我怎样才能订阅我的 customControl 的基础事件吗？我有一个带有一些依赖属性的自定义控件:

public class MyCustomControl : Button
{
    static MyCustomControl ()
    {
        DefaultStyleKeyProperty.OverrideMetadata( typeof( MyCustomControl ), new FrameworkPropertyMetadata( typeof( MyCustomControl ) ) );
    }

    public ICommand KeyDownCommand
    {
        get { return (ICommand)GetValue( KeyDownCommandProperty ); }
        set { SetValue( KeyDownCommandProperty, value ); }
    }
    public static readonly DependencyProperty KeyDownCommandProperty = 
    DependencyProperty.Register( "KeyDownCommand", typeof( ICommand ), typeof( MyCustomControl ) );

    public ICommand KeyUpCommand
    {
        get { return (ICommand)GetValue( KeyUpCommandProperty ); }
        set { SetValue( KeyUpCommandProperty, value ); }
    }
    public static readonly DependencyProperty KeyUpCommandProperty = 
    DependencyProperty.Register( "KeyUpCommand", typeof( ICommand ), typeof( MyCustomControl ) );

    public ICommand KeyPressedCommand
    {
        get { return (ICommand)GetValue( KeyPressedCommandProperty ); }
        set { SetValue( KeyPressedCommandProperty, value ); }
    }
    public static readonly DependencyProperty KeyPressedCommandProperty = 
    DependencyProperty.Register( "KeyPressedCommand", typeof( ICommand ), typeof( MyCustomControl ) );
}

我想订阅 Button 的事件(如 MouseLeftButtonDown)以在我的自定义控件中运行一些代码。

你知道我怎样才能在构造函数中做这样的事情吗？

static MyCustomControl()
    {
        DefaultStyleKeyProperty.OverrideMetadata( typeof( MyCustomControl ), new FrameworkPropertyMetadata( typeof( MyCustomControl ) ) );
        MouseLeftButtonDownEvent += (object sender, MouseButtonEventArgs e) => "something";
    }

谢谢你的帮助

Answer 1

我找到了解决方案!

你只需要覆盖 OnMouseLeftButtonDown方法。不要忘记在代码后调用 base.OnMouseLeftButtonDown。