public bool IsGroupSelectionEnabled {get; set;}

'Declaration
 
Public Property IsGroupSelectionEnabled As Boolean

'Usage
 
Dim instance As DataGridControl
Dim value As Boolean
 
instance.IsGroupSelectionEnabled = value
 
value = instance.IsGroupSelectionEnabled

Property Value

The group selection feature allows the end-user to select/unselect all rows within a group by clicking any group header that contains a GroupHeaderControl.

This behavior is off by default. To activate it, set this property to "True". The DataGrid's selection unit must be "Row" and the view must be a valid instance or subclass of TableView (e.g. TableFlowView, TreeGridflowView).

Standard keyboard and mouse gestures are supported and can be used to select a group. The GroupHeaderControl of a group will also appear selected when all rows within that group has been selected.

Selection range:

When activated, a collapsed group that falls within a manually added selection range will have all its contained items added to the selection.

Reference

DataGridControl Class
DataGridControl Members