จะใช้ command field ของ gridview เพื่อลิ้งไปหน้าอื่นและส่งค่าไปด้วย ทำยังไงคับ

 protected void GridView1_OnRowDataBound(object sender, GridViewRowEventArgs e)
        {
            //brand
            Label Lb_brand =(Label)(e.Row.FindControl("Lb_brand"));
            if (Lb_brand != null)
                Lb_brand.Text = (string)DataBinder.Eval(e.Row.DataItem,"Brand");
            //model
            Label Lb_model = (Label)(e.Row.FindControl("Lb_model"));
           
            if (Lb_model != null)
            {
                Lb_model.Text = (string)DataBinder.Eval(e.Row.DataItem, "Model");
            }
            //serial
            Label Lb_serial = (Label)(e.Row.FindControl("Lb_serial"));
            if (Lb_serial != null)
                Lb_serial.Text = (string)DataBinder.Eval(e.Row.DataItem, "Serial");
            //status
            Label Lb_status = (Label)(e.Row.FindControl("Lb_status"));
            if (Lb_status != null)
                Lb_status.Text = (string)DataBinder.Eval(e.Row.DataItem, "State");
            //remark
            Label Lb_remark = (Label)(e.Row.FindControl("Lb_remark"));
            if (Lb_remark != null)
                Lb_remark.Text = (string)DataBinder.Eval(e.Row.DataItem, "Remark");
           //hyperlink
            HyperLink link = (HyperLink)(e.Row.FindControl("HyperLink1"));
            if (link != null)
                link.NavigateUrl = "testVariable.aspx?Lb_model =" + (string)DataBinder.Eval(e.Row.DataItem, "Model");
            
           
        }

  protected void Page_Load(object sender, EventArgs e)
{
        string aa= Request.QueryString["lb_model"];
        Label1.Text = aa;
}

'*** Hyperlink ***'
			Dim hplEdit As Hyperlink = CType(e.Item.FindControl("hplEdit"),Hyperlink)
			IF Not IsNothing(hplEdit) Then
				hplEdit.Text = "Edit"
				hplEdit.NavigateUrl = "AspNetAccessEditForm.aspx?CustomerID=" & e.Item.DataItem("CustomerID")
			End IF

 //hyperlink
            HyperLink link = (HyperLink)(e.Row.FindControl("HyperLink1"));
            if (link != null)
                link.NavigateUrl = "testVariable.aspx?Model =" + (string)DataBinder.Eval(e.Row.DataItem, "Model");
            

string aa = Request.QueryString["Model"];
if ((aa == " ")||(aa==null))
                aa = "ค่าว่างเปล่า";
 Label1.Text = aa;