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/>"));
        }