C＃Web窗体：当MessageBox显示时，GridView消失

Question

我有3个GridView，每个都在一个单独的标签中。 GridView中的每一行都与一个LinkBut​​ton相关联，当它被点击时，会弹出一个MessageBox，显示该特定行上的内容。

问题是，当MessageBox弹出时，GridView消失，当MessageBox关闭时，GridView会回来。

如果在没有任何选项卡的情况下使用GridView并且将其放在TabControl之外，则不会发生此问题。这是我的代码：

protected void Page_Load(object sender, EventArgs e)
    {
        TabControl TheTabCtrl = new TabControl("InfoTabCtrl");

        for (var i = 0; i < 3; i++)
        {
            GridView newGridView = new GridView();
            //generate dynamic id        
            newGridView.ID = String.Concat("GridView", i);
            newGridView.AutoGenerateColumns = false;
            newGridView.RowDataBound += new GridViewRowEventHandler(OnRowDataBound);

            //if (!this.IsPostBack)
            //{
                BoundField bfield = new BoundField();
                bfield.HeaderText = "Id";
                bfield.DataField = "Id";
                newGridView.Columns.Add(bfield);

                bfield = new BoundField();
                bfield.HeaderText = "Name";
                bfield.DataField = "Name";
                newGridView.Columns.Add(bfield);

                TemplateField tfield = new TemplateField();
                tfield.HeaderText = "Country";
                newGridView.Columns.Add(tfield);

                tfield = new TemplateField();
                tfield.HeaderText = "View";
                newGridView.Columns.Add(tfield);
            //}
                this.BindGrid(newGridView, i);

                string myString = i.ToString();
                TabPage BasicPage1 = new TabPage(myString, myString);
                BasicPage1.Controls.Add(newGridView);
                TheTabCtrl.Tabs.Add(BasicPage1);
        }

        if (!this.IsPostBack)
        {
            string value = Request.Form[TheTabCtrl.Id + "_SelectedTab"];
            if (!string.IsNullOrEmpty(value))
            {
                try
                {
                    TheTabCtrl.SelectedTab = TheTabCtrl.Tabs.IndexOf(TheTabCtrl.Tabs.Where(x => x.Id == value).First());
                }
                catch
                {
                }
            }
        }
        form1.Controls.Add(TheTabCtrl.GetControl);

    }

    private void BindGrid(GridView newGridView, int id)
    {
        string[][,] jaggedArray = new string[3][,] 
        {
            new string[,] { {"John Hammond", "United States"}, {"Mudassar Khan", "India"}, {"Suzanne Mathews", "France"}, {"Robert Schidner", "Russia"} },
            new string[,] { {"Zoey Melwick", "New Zeeland"}, {"Bryan Robertson", "England"}, {"Beth Stewart", "Australia"}, {"Amanda Rodrigues", "Portugal"} },
            new string[,] { {"Glenda Becker", "Germany"}, {"Despoina Athanasiadis", "Greece"}, {"Alexandra López", "Spain"}, {"David Bouchard", "Canada"} }
        };

        for (int row = 0; row < jaggedArray.Length; row++)
        {
            if (id != row) continue;
            DataTable dt = new DataTable();
            // Share the same headlines
            dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
                    new DataColumn("Name", typeof(string)),
                    new DataColumn("Country",typeof(string)) });

            for (int pair = 0; pair < jaggedArray[row].Length / 2; pair++)
            {

                dt.Rows.Add(pair + 1, jaggedArray[row][pair, 0], jaggedArray[row][pair, 1]);
            }

            string myPage = string.Concat(row, "page");
            string myString = row.ToString();

            newGridView.DataSource = dt;
            newGridView.DataBind();

        }//End for Row                 

    }//BindGrid

    protected void OnRowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            TextBox txtCountry = new TextBox();
            txtCountry.ID = "txtCountry";
            txtCountry.Text = (e.Row.DataItem as DataRowView).Row["Country"].ToString();

            e.Row.Cells[1].Width = 200;
            e.Row.Cells[2].Controls.Add(txtCountry);

            LinkButton lnkView = new LinkButton();
            lnkView.ID = "lnkView";
            lnkView.Text = "View";

            lnkView.Click += ViewDetails;

            lnkView.CommandArgument = (e.Row.DataItem as DataRowView).Row["Id"].ToString();
            e.Row.Cells[3].Controls.Add(lnkView);

        }
    }

    protected void ViewDetails(object sender, EventArgs e)
    {
        LinkButton lnkView = (sender as LinkButton);
        GridViewRow row = (lnkView.NamingContainer as GridViewRow);
        string id = lnkView.CommandArgument;
        string name = row.Cells[1].Text;
        string country = (row.FindControl("txtCountry") as TextBox).Text;
        ClientScript.RegisterStartupScript(this.GetType(), "alert", "alert('Id: " + id + " Name: " + name + " Country: " + country + "')", true);
    }

那么如何在没有GridView消失的情况下显示MessageBox？