GridViewDataColumn.GroupIndex Property
Specifies the column’s grouping level.
Namespace: DevExpress.Web
Assembly: DevExpress.Web.v24.1.dll
NuGet Package: DevExpress.Web
Declaration
Property Value
Type | Default | Description |
---|---|---|
Int32 | -1 | The column’s grouping level. |
Remarks
ASPxGridView allows users to group its data by multiple columns. Specify the GroupIndex
property to define the column’s grouping level. If the GroupIndex
property is set to -1
, the control does not group its data by this column.
For more information on grouping in the grid, refer to the following topic: ASPxGridView - Group Data.
Example
The example below demonstrates how to group records by first letters:
<dx:ASPxGridView ID="grid" runat="server" AutoGenerateColumns="False"
KeyFieldName="ProductID" OnBeforeColumnSortingGrouping="grid_BeforeColumnSortingGrouping">
<Columns>
<dx:GridViewDataTextColumn FieldName="ProductID" ReadOnly="True" VisibleIndex="0">
<EditFormSettings Visible="False" />
</dx:GridViewDataTextColumn>
<dx:GridViewDataTextColumn Name="VisibleProductName" FieldName="ProductName" VisibleIndex="1">
<Settings AllowGroup="True" SortMode="Custom" />
</dx:GridViewDataTextColumn>
<dx:GridViewDataTextColumn Name="InvisibleProductName" FieldName="ProductName" VisibleIndex="2"
Visible="False" />
<dx:GridViewDataTextColumn FieldName="UnitPrice" VisibleIndex="2" />
</Columns>
<Settings ShowGroupPanel="True" />
</dx:ASPxGridView>
protected void grid_BeforeColumnSortingGrouping(object sender, DevExpress.Web.ASPxGridView.ASPxGridViewBeforeColumnGroupingSortingEventArgs e) {
if(e.Column.Name == "VisibleProductName")
grid.Columns["InvisibleProductName"].Visible = ((grid.Columns["VisibleProductName"] as GridViewDataColumn).GroupIndex != -1);
}
Related GitHub Examples
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the GroupIndex property.
Note
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