自定义控件嵌套

     public   class  DisplayPost : System.Web.UI.WebControls.WebControl,INamingContainer
     {        

        protected UC_Button SendMS = new UC_Button();


        private void SendMS_ButtonClick(object sender, EventArgs e)
        {
        

            UC_Button ServerPromptTmp = (UC_Button)sender;

            string ActionFlag = ServerPromptTmp.Value;

        }



        protected override void CreateChildControls()
        {    
            
            SendMS.ButtonClick +=new EventHandler(SendMS_ButtonClick);
            
            
            Controls.Add(SendMS);            

            base.CreateChildControls();
            
        }




        protected override void Render(HtmlTextWriter output)
        {
        
            this.SendMS.RenderControl(output);

        }





        private void DisplayPost_PreRender(object sender,EventArgs e)
        {
            this.SendMS.ButtonType = "LinkButton";
            this.SendMS.ButtonCss = "black";
        }


        override protected void OnInit(EventArgs e)
        {    
            this.PreRender += new EventHandler(DisplayPost_PreRender);

            base.OnInit(e);
        }

    }