webcustomcontrol1.cs

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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
//using System.Collections.Specialized;

namespace WebIPostBackEventHandler
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")]
    public class WebCustomControl1 : WebControl, IPostBackEventHandler
    {
        public event EventHandler Click;
        protected virtual void OnClick(EventArgs e)
        {

            if (Click != null)
            {
                Click(this, e);
            }
        }
        public void RaisePostBackEvent(string eventArgument)
        {

            OnClick(new EventArgs());
        }

        protected override void Render(HtmlTextWriter output)
        {
            output.Write("<INPUT TYPE = submit name = " + this.UniqueID +
               " Value = '单击' />");
        }

    }
}