public static void PopulateDrug(RadDropDownList ddl)
        {
            try
            {
                List<Drug> drugs = new DrugData().GetDrugs();
                drugs.Insert(0, new Drug() { BrandId = 0, BrandName = "Select" });

                ddl.DataSource = drugs;
                ddl.ValueMember = "BrandId";
                ddl.DisplayMember = "BrandName";
            }
            catch (Exception x)
            {
                FileLogger.LogError(x);
            }
        }