public void CreateGridView() { centerInfo.Controls.Add(new LiteralControl("<br/>")); string votercode = nationalIdTextBox.Text; List <PartialTreatment> treatments = new List <PartialTreatment>(); treatments = centerManager.GetTreatments(votercode); GridView treatmentGridView = new GridView(); treatmentGridView.ID = "treatmentGridView"; treatmentGridView.DataSource = treatments; treatmentGridView.DataBind(); // centerInfo.Controls.Add(treatmentGridView); GridviewDiv.Controls.Add(treatmentGridView); GridviewDiv.Controls.Add(new LiteralControl("<br/>")); }