每次点击都会创建gridview的模板字段列

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问题描述

这是我在ajax面板中放置网格视图的aspx代码。

this is aspx code in which I put a grid view in ajax panel.

<body>
        <form id="form1" runat="server">
        <div>

        <asp:ScriptManager ID="ScriptManager1" runat="server">
            </asp:ScriptManager>

            <asp:UpdatePanel ID="UpdatePanel1" runat="server">
            <ContentTemplate>
            <asp:GridView ID="GridView1" runat="server" DataKeyNames="head_code" >
            </asp:GridView>

            </ContentTemplate>
            </asp:UpdatePanel>

        </div>
        </form>
    </body>

以下代码背后：

Following is code behind:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace gridview_button
{

    public partial class WebForm2 : System.Web.UI.Page, ITemplate
    {

        protected void Page_Load(object sender, EventArgs e)
        {
            hitechLatestEntities database = new hitechLatestEntities();
            GridView1.DataSource = database.HEADs;

            TemplateField tfObject = new TemplateField();
            tfObject.HeaderText = "Sub-Head";

            tfObject.ItemTemplate = new WebForm2(ListItemType.Item);

            GridView1.Columns.Add(tfObject);
            GridView1.DataBind();

        }

       /////////////////////////////// For template field //////////////////////////////////

        public WebForm2()
        {
        }

        public WebForm2(ListItemType Item)
        {
            myListItemType = Item;
        }

        private ListItemType myListItemType;

        public void InstantiateIn(Control container)
        {

            if (myListItemType == ListItemType.Item)
            {
                Button btn = new Button();
                container.Controls.Add(btn);
            }
        }

      ////////////////////////////////////////////////////////////////////////////////////
    }

}

我已经动态创建了模板字段，并且上面的代码工作正常，但唯一的问题是每次当我点击模板字段中的按钮时，会出现一个新的空白模板字段列标题文本。即使是ajax也不适合我。

或

有人能告诉我如何动态地将btn添加到UpdatePanel1吗？

I have created template field dynamically and Above code is working fine but only problem is that every time when i click on button in template field, a new blank template field column appears with same header text. Even ajax is not working for me.
or
can anyone tell me how to add btn to UpdatePanel1 dynamically??

模板字段

每次点击都会创建gridview的模板字段列

问题描述

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