C# ItemDataBound与中继器如何处理 protectedvoid rptLastPromotion\u ItemDataBound（对象发送方，System.Web.UI.WebControls.RepeaterItemEventArgs e） { HtmlAnchor aView=（HtmlAnchor）e.Item.FindControl（“描述”）； Label lbldescriptionlink=（Label）e.Item.FindControl（“lblDescription”）； Label lbldescriptionNoLink=（Label）e.Item.FindControl（“lblDescription2”）； HiddenField hfIsNewTab=（HiddenField）e.Item.FindControl（“hfNewTab”）； 对于（int i=0；i

您的问题非常模糊，但我相信您的问题可能是您没有检查repeater item Type。执行此操作的标准方法是：

   protected void rptLastPromotion_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e)
        {
                HtmlAnchor aView = (HtmlAnchor)e.Item.FindControl("aDescription");
                Label lbldescriptionlink = (Label)e.Item.FindControl("lblDescription");
                Label lbldescriptionNoLink = (Label)e.Item.FindControl("lblDescription2");
                HiddenField hfIsNewTab = (HiddenField)e.Item.FindControl("hfNewTab");

                for (int i = 0; i <= rptLastPromotion.Items.Count; i++)
                {
                    if (!String.IsNullOrEmpty(aView.HRef))
                    {
                        lbldescriptionlink.Visible = true;
                        lbldescriptionNoLink.Visible = false;
                        if (Convert.ToBoolean(hfIsNewTab.Value) == true)
                        {
                            aView.Target = "_blank";
                        }
                    }
                    else
                    {
                        lbldescriptionlink.Visible = false;
                        lbldescriptionNoLink.Visible = true;
                    }

                }

            }

---

此外，不需要在中继器的项目上循环。（

对于（int i=0；i您需要检查
中继器的
ItemType
内部
ItemDataBound
事件

protected void rptLastPromotion_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) {
                HtmlAnchor aView = (HtmlAnchor)e.Item.FindControl("aDescription");
                Label lbldescriptionlink = (Label)e.Item.FindControl("lblDescription");
                Label lbldescriptionNoLink = (Label)e.Item.FindControl("lblDescription2");
                HiddenField hfIsNewTab = (HiddenField)e.Item.FindControl("hfNewTab");

                    if (!String.IsNullOrEmpty(aView.HRef))
                    {
                        lbldescriptionlink.Visible = true;
                        lbldescriptionNoLink.Visible = false;
                        if (Convert.ToBoolean(hfIsNewTab.Value) == true)
                        {
                            aView.Target = "_blank";
                        }
                    }
                    else
                    {
                        lbldescriptionlink.Visible = false;
                        lbldescriptionNoLink.Visible = true;
                    }

              }
            }

这个答案有用吗？你有什么问题吗？
protected void rptLastPromotion_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) {
                HtmlAnchor aView = (HtmlAnchor)e.Item.FindControl("aDescription");
                Label lbldescriptionlink = (Label)e.Item.FindControl("lblDescription");
                Label lbldescriptionNoLink = (Label)e.Item.FindControl("lblDescription2");
                HiddenField hfIsNewTab = (HiddenField)e.Item.FindControl("hfNewTab");

                    if (!String.IsNullOrEmpty(aView.HRef))
                    {
                        lbldescriptionlink.Visible = true;
                        lbldescriptionNoLink.Visible = false;
                        if (Convert.ToBoolean(hfIsNewTab.Value) == true)
                        {
                            aView.Target = "_blank";
                        }
                    }
                    else
                    {
                        lbldescriptionlink.Visible = false;
                        lbldescriptionNoLink.Visible = true;
                    }

              }
            }

protected void rptLastPromotion_ItemDataBound(object sender,System.Web.UI.WebControls.RepeaterItemEventArgs e)  
{  
    if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)  
    {
          // write your logic here             
    }
}