silverlight为自定义控件添加事件

最新推荐文章于 2025-10-08 14:41:26 发布

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#silverlight #自定义事件

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本文介绍了一个自定义的Silverlight用户控件，并演示了如何定义和触发自定义事件，以及如何在宿主页面中捕获这些事件并作出响应。

1）用户控件SilverlightControl1.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;


namespace SilverlightApplication20
{
    public partial class SilverlightControl1 : UserControl
    {
        /// <summary>
        /// 定义委托
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        public delegate void MyDelegate(object sender, EventArgs e);
        /// <summary>
        /// 定义事件
        /// </summary>
        public event MyDelegate myEvent;
        private Button TestButton = null;
        public SilverlightControl1()
        {
            InitializeComponent();
            TestButton = new Button();
            TestButton.Width = 200;
            TestButton.Height = 24;
            TestButton.Content = "Test";
            TestButton.Click+=new RoutedEventHandler(TestButton_Click);
            LayoutRoot.Children.Add(TestButton);
        }


        private void TestButton_Click(object sender, RoutedEventArgs e)
        {
            //将自定义事件绑定到控件事件上
            if (myEvent != null)
            {
                myEvent(sender, e);
            }
        }
    }
}

2）调用页面Home.xaml.cs（温馨提示调用用户控件一定要是Silverlight Page）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.Windows.Shapes;


namespace SilverlightApplication20
{
    public partial class Home : Page
    {
        private StackPanel TestStackPanel = null;
        private SilverlightControl1 silverlightControl1 = null;
        private TextBlock TestBlock = null;
        public Home()
        {
            InitializeComponent();
            //StackPanel
            TestStackPanel = new StackPanel();
            LayoutRoot.Children.Add(TestStackPanel);
            //字定义控件
            silverlightControl1 = new SilverlightControl1();
            silverlightControl1.myEvent += new SilverlightControl1.MyDelegate(silverlightControl1_myEvent);
            TestStackPanel.Children.Add(silverlightControl1);
            //TextBlock
            TestBlock = new TextBlock();
            TestBlock.Text = "Test";
            TestStackPanel.Children.Add(TestBlock);
        }
        // Executes when the user navigates to this page.
        protected override void OnNavigatedTo(NavigationEventArgs e)
        {
            
        }
        void silverlightControl1_myEvent(object sender, EventArgs e)
        {
            TestBlock.Text = "Hello World!";
        }
    }
}