aspnet-devexpress-dot-web-dot-aspxgridview-55ed09a4.md
Returns a collection of grouped columns.
Namespace : DevExpress.Web
Assembly : DevExpress.Web.v25.2.dll
NuGet Package : DevExpress.Web
public ReadOnlyCollection<GridViewDataColumn> GetGroupedColumns()
Public Function GetGroupedColumns As ReadOnlyCollection(Of GridViewDataColumn)
| Type | Description |
|---|---|
| ReadOnlyCollection<GridViewDataColumn> |
The collection of grouped columns.
|
ASPxGridView supports data grouping by multiple columns. Call the GetGroupedColumns method to access the collection of grouped columns.
For more information on grouping in the grid, refer to the following topic: ASPxGridView - Group Data.
The code sample below uses the GetGroupedColumns method to traverse through the grouped columns and sort them in descending order.
<dx:ASPxGridView ID="grid" runat="server" OnCustomCallback="grid_CustomCallback">
<%--...--%>
<Settings ShowGroupPanel="true" />
</dx:ASPxGridView>
protected void grid_CustomCallback(object sender, ASPxGridViewCustomCallbackEventArgs e) {
var collection = grid.GetGroupedColumns();
foreach(var item in collection) {
item.SortDescending();
}
}
Protected Sub grid_CustomCallback(ByVal sender As Object, ByVal e As ASPxGridViewCustomCallbackEventArgs)
Dim collection = grid.GetGroupedColumns()
For Each item In collection
item.SortDescending()
Next
End Sub
The following code snippets (auto-collected from DevExpress Examples) contain references to the GetGroupedColumns() method.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.
asp-net-web-forms-grid-create-report-based-on-grid-layout/CS/WebApplication1/ReportHelper.cs#L57
if(aspxGridView1.GroupSummary.Count > 0) {
ReadOnlyCollection<GridViewDataColumn> groupedColumns = aspxGridView1.GetGroupedColumns();
for(int i = groupedColumns.Count - 1; i >= 0; i--) {
asp-net-mvc-grid-create-report-based-on-grid-layout/CS/E4755/Models/MVCxGridViewState.cs#L12
Columns = new GridViewDataColumnStateCollection(gridView.VisibleColumns);
GroupedColumns = new GridViewDataColumnStateCollection(gridView.GetGroupedColumns());
TotalSummary = new System.Collections.ObjectModel.Collection<MVCxSummaryItemState>();
asp-net-web-forms-grid-create-report-based-on-grid-layout/VB/WebApplication1/ReportHelper.vb#L59
If aspxGridView1.GroupSummary.Count > 0 Then
Dim groupedColumns As ReadOnlyCollection(Of GridViewDataColumn) = aspxGridView1.GetGroupedColumns()
For i As Integer = groupedColumns.Count - 1 To 0 Step -1
asp-net-mvc-grid-create-report-based-on-grid-layout/VB/E4755/Models/MVCxGridViewState.vb#L69
Columns = New GridViewDataColumnStateCollection(gridView.VisibleColumns)
GroupedColumns = New GridViewDataColumnStateCollection(gridView.GetGroupedColumns())
TotalSummary = New System.Collections.ObjectModel.Collection(Of MVCxSummaryItemState)()
See Also