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在自定义控件时,经常要用到自定义事件,在WPF中可以使用两种方式来定义事件,

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public partial class UserControl1 : UserControl
{
    public static readonly RoutedEvent OkButtonClickEvent = EventManager.RegisterRoutedEvent("OkButtonClick", RoutingStrategy.Bubble, typeof(RoutedEventHandler), typeof(UserControl1));
     
    public event RoutedEventHandler OkButtonClick
    {
        add { AddHandler(OkButtonClickEvent, value); }
        remove { RemoveHandler(OkButtonClickEvent, value); }
    }
}


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public partial class UserControl1 : UserControl
{
    public event RoutedEventHandler CancelButtonClick;
}

 

引发事件分别为:

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protected void On_BtnOK_Click(object sender, RoutedEventArgs e)
{
     RaiseEvent(new RoutedEventArgs(OkButtonClickEvent));
}


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protected void On_BtnCancel_Click(object sender, RoutedEventArgs e)
{
        if (CancelButtonClick != null)
        {
            CancelButtonClick(sender, e);
        }
}

编写测试用例:

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public void Test1()
{
    //this.userControl11.AddHandler(UserControl1.ButtonClickEvent, new RoutedEventHandler(userControl11_OkButtonClick));
    this.userControl11.OkButtonClick += new RoutedEventHandler(userControl11_OkButtonClick);
    this.userControl11.CancelButtonClick += new RoutedEventHandler(userControl11_CancelButtonClick);
 
    Button btnOK = this.userControl11.FindName("btnOK") as Button;
    btnOK.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
 
    Button btnCancel = this.userControl11.FindName("btnCancel") as Button;
    btnCancel.RaiseEvent(new RoutedEventArgs(Button.ClickEvent));
 
    this.userControl11.OkButtonClick -= new RoutedEventHandler(userControl11_OkButtonClick);
    this.userControl11.CancelButtonClick -= new RoutedEventHandler(userControl11_CancelButtonClick);
}
 
private void userControl11_OkButtonClick(object sender, RoutedEventArgs e)
{
    Console.WriteLine("userControl11_OkButtonClick");
}
 
private void userControl11_CancelButtonClick(object sender, RoutedEventArgs e)
{
    Console.WriteLine("userControl11_CancelButtonClick");
}

 

示例代码:WpfControlLibrary1.zip

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