//定义一组颜色样式

        AppearanceDefault appError = new AppearanceDefault(Color.White, Color.LightCoral, Color.Empty, Color.Red, LinearGradientMode.ForwardDiagonal);

        private void gridView1_RowCellStyle(object sender, DevExpress.XtraGrid.Views.Grid.RowCellStyleEventArgs e)

        {

            object val = gridView1.GetRowCellValue(e.RowHandle, e.Column);

            //如果货品的颜色为空值，单元格设置为红色

            if ((e.Column.FieldName == "ColorCode") && (String.IsNullOrEmpty(val.ToString())))

            {

                AppearanceHelper.Apply(e.Appearance, appError);//显示自己定义样式

            }

        }