รบกวนช่วยหน่อยค่ะ select ข้อมูลจาก GridView มาแสดงใน Textbox ค่ะ

  void myGridView_RowCommand(Object source , GridViewCommandEventArgs e)
{
       if (e.CommandName == "Select")
       {
           string prename = (myGridView.SelectedRow.FindControl("lblPrename") as Label).Text;
           string fname = (myGridView.SelectedRow.FindControl("lblFName") as Label).Text;
           string lname = (myGridView.SelectedRow.FindControl("lblLName") as Label).Text;
           string birth = (myGridView.SelectedRow.FindControl("lblBirth") as Label).Text;
           string sex = (myGridView.SelectedRow.FindControl("lblSex") as Label).Text;
           string idcard = (myGridView.SelectedRow.FindControl("lblIdcard") as Label).Text;
           string bloodgroup = (myGridView.SelectedRow.FindControl("lblBloodgroup") as Label).Text;
           string allergic = (myGridView.SelectedRow.FindControl("lblAllergic") as Label).Text;
           string persondisease = (myGridView.SelectedRow.FindControl("lblPersondisease") as Label).Text;
           string hn = (myGridView.SelectedRow.FindControl("lblHN") as Label).Text;
          
           txtPrename.Text = prename.ToString();
           txtName.Text = fname.ToString();
           txtSername.Text = lname.ToString();
           txtBirth.Text = birth.ToString();
           txtSex.Text = sex.ToString();
           txtIdcard.Text = idcard.ToString();
           txtBlood.Text = bloodgroup.ToString();
           txtAllergic.Text = allergic.ToString();
           txtPersondisease.Text = persondisease.ToString();
           txtHN.Text = hn.ToString();

           lblValues.Text = "Row Index = " + fname.ToString() + lname.ToString();
   
           BindData();
       }		
   }