maui-devexpress-dot-maui-dot-datagrid-dot-datagridview-37785690.md
Occurs before a group of rows is expanded.
Namespace : DevExpress.Maui.DataGrid
Assembly : DevExpress.Maui.DataGrid.dll
NuGet Package : DevExpress.Maui.DataGrid
public event EventHandler<CancelRowEventArgs> GroupExpanding
The GroupExpanding event's data class is CancelRowEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| Cancel | Gets or sets a value indicating whether the event should be canceled. Inherited from CancelEventArgs. |
| RowHandle | Returns the handle of the processed row. |
The GroupExpanding event is raised before a group of data rows is expanded from UI or code (ExpandGroupRow. You can handle this event and set its parameter’s Cancel property to true to prevent a group from being expanded.
When you call the ExpandAllGroups method, the GroupExpanding event is raised for each group.
After the group row has been expanded, the GroupExpanded event is raised.
See Also