定义WPF事件及测试

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，

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); }
    }
}

或

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

引发事件分别为：

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

和

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

编写测试用例：

        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