private void GetSalesManager() { DataTable ds = new DataTable(); try { ds = ClsSalesRegister.Get_SalesOrderForSaleRegister(Convert.ToDateTime(Txt_FromDate.Text.Trim()), Convert.ToDateTime(Txt_ToDate.Text.Trim())); GvwSalesRegister.DataSource = ds; GvwSalesRegister.DataBind(); ViewState["Data"] = ds; ds.Dispose(); if (ViewState["PageINdex"] != null) { GvwSalesRegister.PageIndex = Convert.ToInt32(ViewState["PageINdex"].ToString()); } } catch (Exception ex) { } }