数据列表控件 [英] datalist control

问题描述

大家好，
我的aspx页面中有一个DataList控件.它包含一个链接按钮和标签.我希望单击链接按钮时链接按钮可以隐藏并显示标签.我已经尝试过了，但是失败了.请指导.

Hi All,
I have a DataList control in my aspx page. It consist a linkbutton and label. I want that on clicking link button the link button get hide and label become visible. I have tried like this but failed. Please guide.

protected void DataList4_ItemCommand(object source, DataListCommandEventArgs e)
   {
       if (e.CommandName == "lnkhead")
       {
           LinkButton lnk = (LinkButton)e.CommandSource;

           foreach (DataListItem item in DataList4.Items)
           {
               Label lbl = (Label)item.FindControl("lblhead");
               lbl.Visible = true;

           }
               lnk.Visible = false;

       }
   }

推荐答案

删除foreach块

Remove foreach block

protected void DataList4_ItemCommand(object source, DataListCommandEventArgs e)
    {
        if (e.CommandName == "lnkhead")
        {
            LinkButton lnk = (LinkButton)e.CommandSource;            
            Label lbl = (Label)e.Item.FindControl("lblhead");
            lbl.Visible = true;
            lnk.Visible = false;
           
        }
    }

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