自定义事件

最新推荐文章于 2026-01-09 17:10:22 发布

转载最新推荐文章于 2026-01-09 17:10:22 发布 · 101 阅读

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原文链接：http://www.cnblogs.com/Elong/archive/2006/07/11/447707.html

文章标签：

#ui

本文介绍了一种基于ASP.NET的自定义回调控件实现方式，通过创建自定义的CallBackCustomerControl类继承自Telerik的RadCallback控件，并定义了自定义事件处理委托和参数传递方法，使得该控件能够在客户端触发事件后进行服务器端回调。

using System;
using System.Web.UI;
using Tripal.Web.Biz.Common;
using System.Web.UI.WebControls;

namespace *****.Web.Biz.UI.Common
{
    public delegate void CallBackEventHandler(object sender, CallBackArgs e);

    public class CallBackArgs:EventArgs
    {
        public  CallBackArgs(string commandName, string commandArgument)
        {
            _commandArgument = commandArgument;
            _commandName = commandName;
        }
        private string _commandName;
        public string CommandName
        {
            set{_commandName=value;}
            get{return _commandName;}
        }

        private string _commandArgument;
        public string CommandArgument
        {
            set{_commandArgument = value;}
            get{return _commandArgument;}
        }
    }

    /// <summary>
    /// Call 的摘要说明。
    /// </summary>
    public class CallBackCustomerControl : Telerik.WebControls.RadCallback
    {
        protected override void OnInit(EventArgs e)
        {
            base.OnInit (e);

            this.Callback +=new CallbackEvent(CallBackCustomerControl_Callback);
        }

        private void CallBackCustomerControl_Callback(object sender, Telerik.WebControls.CallbackEventArgs args)
        {
            if( ProcessCallBack != null )
            {
                CallBackArgs e = new CallBackArgs( args.CallbackEvent, args.Args );
                ProcessCallBack( sender, e );
            }
        }

        protected override void Render(HtmlTextWriter writer)
        {
            base.Render (writer);

            writer.Write( "<script>  function "+this.ClientID+"MakeCallback( commandName, commandArgument ) { MakeCallback('"+this.ClientID+"', commandName, commandArgument); } </script>");
        }

        //事件
        public event CallBackEventHandler ProcessCallBack;

    }
}

转载于:https://www.cnblogs.com/Elong/archive/2006/07/11/447707.html