GetPostBackEventReference加RaisePostBackEvent实现自定义控件中回调传参

;

//回调函数，回调参数值：eventArgument
        public void RaisePostBackEvent(string eventArgument)
        {
            Context.Response.Write("第"+eventArgument+"次点击");
            i = int.Parse(eventArgument);
        }

//控件呈现，Control类重写，传送参数至客户端
        protected override void Render(HtmlTextWriter output)
        {
            output.Write("<input type=\"button\" name = " + this.UniqueID +
               " Value = 'Click Me' onclick=\"javascript:"+Page.ClientScript.GetPostBackEventReference(this,(i+1).ToString())+"\"/>");
        }
    }
}