DEV主从表

1.主从表隐藏表格展开按钮。

当主表内容不包含子表时候隐藏，主从表加号图标。效果如下图。

实现代码

        private void gvMain_CustomDrawCell(object sender, DevExpress.XtraGrid.Views.Base.RowCellCustomDrawEventArgs e)
        {
            if (gvMain.IsMasterRowEmpty(e.RowHandle) == true && e.Column.VisibleIndex == 0)
            {
                var ce = ((DevExpress.XtraGrid.Views.Grid.ViewInfo.GridCellInfo)(e.Cell));
                ce.CellButtonRect = Rectangle.FromLTRB(0, 0, 0, 0);
            }
        }