GridView.CustomDrawGroupRowCell Event

Allows you to manually paint individual cells of group rows.

Namespace: DevExpress.XtraGrid.Views.Grid

Assembly: DevExpress.XtraGrid.v19.1.dll

Declaration

C#

[DXCategory("CustomDraw")]
public event RowGroupRowCellEventHandler CustomDrawGroupRowCell

VB.NET

<DXCategory("CustomDraw")>
Public Event CustomDrawGroupRowCell As RowGroupRowCellEventHandler

Event Data

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

Remarks

The code below displays group summaries for the “Length” and “Mark” columns in group rows, and applies a custom color to these group rows’ cells.

C#

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

    item = new GridGroupSummaryItem() {
        FieldName = "Mark",
        SummaryType = SummaryItemType.Count,
        ShowInGroupColumnFooter = gridView.Columns["Mark"]
    };
    gridView.GroupSummary.Add(item);
    gridView.Columns["ID"].Group();

    // 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;
    };

VB.NET

gridView.OptionsBehavior.AlignGroupSummaryInGroupRow = DefaultBoolean.True
    ' group summaries
    Dim item As New GridGroupSummaryItem() With {.FieldName = "Length", .SummaryType = SummaryItemType.Sum, .ShowInGroupColumnFooter = gridView.Columns("Length")}
    gridView.GroupSummary.Add(item)

    item = New GridGroupSummaryItem() With {.FieldName = "Mark", .SummaryType = SummaryItemType.Count, .ShowInGroupColumnFooter = gridView.Columns("Mark")}
    gridView.GroupSummary.Add(item)
    gridView.Columns("ID").Group()

    ' Handle this event to paint group row cells manually
    AddHandler gridView.CustomDrawGroupRowCell, Sub(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
    End Sub