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GridView.CustomDrawGroupRowCell Event

Allows you to manually paint individual cells of group rows.

Namespace: DevExpress.XtraGrid.Views.Grid

Assembly: DevExpress.XtraGrid.v24.1.dll

NuGet Packages: DevExpress.Win.Grid, DevExpress.Win.Navigation


public event RowGroupRowCellEventHandler CustomDrawGroupRowCell

Event Data

The CustomDrawGroupRowCell event's data class is DevExpress.XtraGrid.Views.Base.RowGroupRowCellEventArgs.


The grid fires the CustomDrawGroupRowCell event if the AlignGroupSummaryInGroupRow option is set to DefaultBoolean.True.

The following example shows how to display group summaries for the “Length” and “Mark” columns in group rows, and paint these group row cells.

GridControl - CustomDrawGroupRowCells

gridView.OptionsBehavior.AlignGroupSummaryInGroupRow = DefaultBoolean.True;
    // group summaries
    GridGroupSummaryItem item = new GridGroupSummaryItem() {
        FieldName = "Length",
        SummaryType = SummaryItemType.Sum,
        ShowInGroupColumnFooter = gridView.Columns["Length"]

    item = new GridGroupSummaryItem() {
        FieldName = "Mark",
        SummaryType = SummaryItemType.Count,
        ShowInGroupColumnFooter = gridView.Columns["Mark"]

    // Handle this event to paint group row cells manually
    gridView.CustomDrawGroupRowCell += (s, e) => {
        e.Appearance.BackColor = Color.BlanchedAlmond;
        e.Appearance.FillRectangle(e.Cache, e.Bounds);
        e.Appearance.ForeColor = Color.DimGray;
        e.Appearance.DrawString(e.Cache, e.DisplayText, e.CaptionBounds);
        e.Handled = true;
See Also