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  • 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); }
        }
    }
    


    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));
    }
    


    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

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  • 原文地址:https://www.cnblogs.com/zhongzf/p/1701125.html
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