WPF自定义控件的事件

写一个WPF的自定义控件，在点击控件中的一个按钮时，需要触发一个事件，使用这个自定义控件的客户，可以订阅这个事件，进行处理。

实现的代码段如下：

1.注册一个路由事件

  public static readonly RoutedEvent ClearClickEvent = EventManager.RegisterRoutedEvent (

     "ClearClick", RoutingStrategy.Bubble, typeof ( RoutedEventHandler ), typeof ( CustomComboBox ) );

2.在控件界面中

  Click="ClearButton_Click"
                                ToolTip="{Binding Path=ClearToolTipText,RelativeSource={RelativeSource FindAncestor,AncestorType={x:Type UserControl}}}">

  

3.触发事件

 private void ClearButton_Click ( object sender, RoutedEventArgs e )
        {
            RoutedEventArgs newEventArgs = new RoutedEventArgs ( ClearClickEvent );
            RaiseEvent ( newEventArgs );
        }

 

4.客户如何使用

                                                  HorizontalAlignment="Stretch" VerticalAlignment="Top" DisplayMemberPath="DisplayName"
                                                       CustomItemContainerStyle="{StaticResource ComboboxTreeViewStyle}">
        
           Command="{Binding ClearFilterCategory}" Event="ClearClick"/>