private void BindGrid(string docnum) { DM_Grid.DataSource = Preview.DirectMaterials(docnum); DM_Grid.KeyFieldName = "PK"; DM_Grid.DataBind(); OP_Grid.DataSource = Preview.OperatingExpense(docnum); OP_Grid.KeyFieldName = "PK"; OP_Grid.DataBind(); CA_Grid.DataSource = Preview.CapitalExpenditure(docnum); CA_Grid.KeyFieldName = "PK"; CA_Grid.DataBind(); }