你需要使用 AJAX 模型弹出扩展。
使用您的字段设计一个面板，并使用模型弹出窗口扩展器显示该弹出窗口
这个链接有它的样本
www.asp.net/ajaxlibrary/ajaxcontroltoolkitsamplesite/modalpopup/modalpopup.aspx
在你的链接按钮点击你必须使用显示方法打开弹出窗口

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
            GenateGridView();

    }

这段代码生成一个gridview只有当它不是一个postback，但是当你点击一个linkbutton一个postpack发生，这就是为什么gridview不再显示当你点击linkbutton.
添加以下代码（if代码中包含的其他else部分），以便在单击lnkButton时显示网格视图

protected void Page_Load(object sender, EventArgs e)
    {
        if (!IsPostBack)
            GenateGridView();
        else
        {
            string ctrlName = Request.Params.Get("__EVENTTARGET").Trim();

            if (!String.IsNullOrEmpty(ctrlName))
            {
                if (ctrlName.StartsWith("lnkButton"))
                {
                    GenateGridView();
                }
            }

        }

    }

最好在GridView上为linkbutton使用CommandName属性，并在代码文件中为其给予特定名称，然后在GridView的RowCommand事件中准确地使用它，如下例所示：

首先是.aspx文件：

<div>
        <asp:GridView ID="GridViewStudents" runat="server" AutoGenerateColumns="False" OnRowCommand="GridViewStudents_RowCommand">
            <Columns>
                <asp:TemplateField HeaderText="Stud_ID" Visible="False">
                    <ItemTemplate>
                        <asp:Label ID="LabelStudID" runat="server" Text='<%# Eval("Stud_ID") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="FKFather_ID" Visible="False">
                    <ItemTemplate>
                        <asp:Label ID="LabelFkFatherID" runat="server" Text='<%# Eval("Fk_Father_ID") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Student Name">
                    <ItemTemplate>
                        <asp:Label ID="LabelStudName" runat="server" Text='<%# Eval("Stud_Name") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>
                <asp:TemplateField HeaderText="Class Name">
                    <ItemTemplate>
                        <asp:Label ID="LabelRowlevelName" runat="server" Text='<%# Eval("Stud_Level_Row_Name") %>'></asp:Label>
                    </ItemTemplate>
                </asp:TemplateField>

                <asp:TemplateField HeaderText="Delete">
                    <ItemTemplate>
                        <asp:ImageButton ID="ImageButtonDelete" runat="server" CommandArgument='<%# Eval("Stud_ID") %>' CommandName="Remove" />
                    </ItemTemplate>
                </asp:TemplateField>
            </Columns>
        </asp:GridView>
    </div>

<div style="direction: ltr">
    <asp:Panel ID="Panel1" runat="server" Visible="false">
        <asp:Label ID="Labelpopupmessage" runat="server" Text=""></asp:Label>
        <br />
        <asp:Button ID="Buttonaccept" runat="server" Text="نعم" OnClick="Buttonaccept_Click" />
        <asp:Button ID="Buttoncancel" runat="server" Text="لا" OnClick="Buttoncancel_Click" />
    </asp:Panel>
    <asp:HiddenField ID="HiddenField1" runat="server" />
    <asp:ModalPopupExtender runat="server" ID="ModalPopupExtenderStudent" PopupControlID="ButtonSubmit" TargetControlID="HiddenField1" CancelControlID="Buttoncancel">
    </asp:ModalPopupExtender>
</div>

下面是我的示例的代码实现：

protected void GridViewStudents_RowCommand(object sender, GridViewCommandEventArgs e)
                {
                    if (e.CommandName == "Remove")
                    {
                       // I stored the ID of the selected Student I want to delete in a viewstate.
                                    ViewState.Add("DeletedStudDetailID",Convert.ToInt32(e.CommandArgument));
 ModalpopupExtender.Show();
                    }

                 }

// Here in the accept delete button I used that code ..
        protected void Buttonaccept_Click(object sender, EventArgs e)
        {
            try
            {
                if (ViewState["DeletedStudDetailID"] != null)
                {
                    StudentDetail StudDet = Data.StudentDetails.Single(SD => SD.Fk_Stud_ID == Convert.ToInt32(ViewState["DeletedStudDetailID"]));
                    Data.StudentDetails.DeleteOnSubmit(StudDet);
                    Student Stud = Data.Students.Single(S => S.Stud_ID == Convert.ToInt32(ViewState["DeletedStudDetailID"]));
                    Data.Students.DeleteOnSubmit(Stud);
                    Data.SubmitChanges();
                }
                this.ResultMessage = "Delete Done Sucessfully !!";
            }
            catch
            {
                this.ErrorMessage = "Delete operation disordered !!";
            }
            finally
            {
                ModalPopExtender.Hide();
            }

        }

我希望这对你的问题有帮助，祝你有快乐的一天：）！！

首先，在调用GenateGridView方法时将创建GridView，因此每次回发时都必须调用此方法，然后Page_Load应为

protected void Page_Load(object sender, EventArgs e)
{
   GenateGridView();
}

其次，我将向您展示动态添加LinkButton到GridView的另一种方法。我修改了您的GenateGridView，以便仅将标签添加到DynamicTemplate中，还添加了此行**gvDynamicArticle.RowDataBound += new GridViewRowEventHandler(gvDynamicArticle_RowDataBound);**以处理添加LinkButton。

private void GenateGridView()
{
    TemplateField tempField;
    DynamicTemplate dynTempItem;
    Label label;

    GridView gvDynamicArticle = new GridView();

    gvDynamicArticle.Width = Unit.Pixel(500);
    gvDynamicArticle.BorderWidth = Unit.Pixel(0);
    gvDynamicArticle.Caption = "<div>Default Grid</div>";
    gvDynamicArticle.AutoGenerateColumns = false;
    gvDynamicArticle.RowDataBound += new GridViewRowEventHandler(gvDynamicArticle_RowDataBound);
    DataTable data = getBindingData();

    for (int i = 0; i < data.Columns.Count; i++)
    {
        tempField = new TemplateField();
        dynTempItem = new DynamicTemplate(ListItemType.AlternatingItem);

        string ColumnValue = data.Columns[i].ColumnName;
        tempField.HeaderText = ColumnValue;

        label = new Label();

        label.ID = string.Format("Label{0}", i);
        dynTempItem.AddControl(label, "Text", ColumnValue);
        label.Width = 100;

        tempField.ItemTemplate = dynTempItem;
        gvDynamicArticle.Columns.Add(tempField);
    }

    gvDynamicArticle.DataSource = data;
    gvDynamicArticle.DataBind();

    divContainer.Controls.Add(gvDynamicArticle);
}

我在GridView的RowDataBound事件处理程序中这样实现，以添加LinkButton并隐藏之前添加的Label：

protected void gvDynamicArticle_RowDataBound(object sender, GridViewRowEventArgs e) 
{
    for (int j = 1; j < e.Row.Cells.Count; j++)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            LinkButton lnkButton = new LinkButton();
            lnkButton.ID = string.Format("lnkButton{0}{1}", e.Row.DataItemIndex, j);
            lnkButton.Click += new EventHandler(lnkButton_Click);

            Label tempLabel = e.Row.FindControl("Label" + j) as Label;
            lnkButton.Text = tempLabel.Text;
            lnkButton.CommandArgument = tempLabel.Text;

            tempLabel.Visible = false;

            e.Row.Cells[j].Controls.Add(lnkButton);
        }
    }
}

您还可以将任何值设置为LinkButton的CommandArgument，然后可以在警报中显示它。
最后，看起来你想在警报中显示一些值，你可以这样编码

public void lnkButton_Click(object sender, EventArgs e)
{
    // showing cell values in popUp here.. 
    LinkButton lnk = (LinkButton)sender;
    ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('cell clicked, value " + lnk.CommandArgument + "')", true);
}