.net控件

当你使用服务器控件，在repeater中放入服务器控件时designer.cs文件中怎么都不会出现你拖拉的控件时，对于新手的我来说很麻烦

现在使用后台的方法暂时实现功能，具体代码如下：

protected void Button2_Click(object sender, EventArgs e)
{
 foreach (RepeaterItem item in repConParList.Items) //repeater控件
 {
 Label lblId = (Label)item.FindControl("lblId");
 string id = lblId.Text;
System.Web.UI.HtmlControls.HtmlSelect sel_type = (System.Web.UI.HtmlControls.HtmlSelect)item.FindControl("sel_type"); 
 System.Web.UI.HtmlControls.HtmlInputText txt_ReceiveGift = (System.Web.UI.HtmlControls.HtmlInputText)item.FindControl("txt_ReceiveGift");
 System.Web.UI.HtmlControls.HtmlInputCheckBox cbReceive = (System.Web.UI.HtmlControls.HtmlInputCheckBox)item.FindControl("cbReceive"); 
 System.Web.UI.HtmlControls.HtmlInputCheckBox cbReceived = (System.Web.UI.HtmlControls.HtmlInputCheckBox)item.FindControl("cbReceived");  System.Web.UI.HtmlControls.HtmlInputText txt_Receipt = (System.Web.UI.HtmlControls.HtmlInputText)item.FindControl("txt_Receipt"); 
 System.Web.UI.HtmlControls.HtmlInputText txt_Invoice = (System.Web.UI.HtmlControls.HtmlInputText)item.FindControl("txt_Invoice"); 
 Label lblusername = (Label)item.FindControl("lblusername");
 Parkingfeemodel = new Model.ParkingFee();
 Parkingfeemodel.MoneyType = sel_type.SelectedIndex.ToString();
 string n = txt_ReceiveGift.Value;
 Parkingfeemodel.ReceiveGift = int.Parse(n);

Parkingfeemodel.Receive =1;

 Parkingfeemodel.Received = 1;
 string i = txt_Receipt.Value;
 Parkingfeemodel.Receipt = int.Parse(i);
 string t = txt_Invoice.Value;
 Parkingfeemodel.Invoice = int.Parse(t);
 lblusername.Text = SessionInfo.User.UserName;
 Parkingfeemodel.TransferName = lblusername.Text;
 Parkingfeemodel.Id = int.Parse(id);
 parkingfeeservice.UpdateParkingFee(Parkingfeemodel);
 }
 Bind();
}