Xceed DataGrid for WPF v7.2 Documentation
AbortQueryGroups Event (DataGridVirtualizingCollectionView)


Xceed.Wpf.DataGrid Assembly > Xceed.Wpf.DataGrid Namespace > DataGridVirtualizingCollectionView Class : AbortQueryGroups Event
Raised when a QueryGroups event has been raised for a page of data that is no longer needed and whose corresponding AsyncQueryInfo object's EndQuery method has not yet been called, allowing the pending operation to be canceled and preventing useless processing on the data server.
Syntax
'Declaration
 
Public Event AbortQueryGroups As EventHandler(Of QueryGroupsEventArgs)
'Usage
 
Dim instance As DataGridVirtualizingCollectionView
Dim handler As EventHandler(Of QueryGroupsEventArgs)
 
AddHandler instance.AbortQueryGroups, handler
public event EventHandler<QueryGroupsEventArgs> AbortQueryGroups
Event Data

The event handler receives an argument of type QueryGroupsEventArgs containing data related to this event. The following QueryGroupsEventArgs properties provide information specific to this event.

PropertyDescription
Gets an AsyncQueryInfo that provides the information necessary to retrieve the next batch of items.  
Gets the child group description.  
Gets the name of the item property that should be queried in order to find its distinct values and their count taking into account the parent groups, which can be retrieved through the GroupPath property.  
Gets the direction in which child groups are sorted.  
Gets the DataGridVirtualizingCollectionView to which the grid is bound.  
Gets a read only collection of DataGridGroupInfo objects, which provide information on the parent groups.  
true if the event is asynchronous, otherwise false. By default, false. (Inherited from Xceed.Wpf.DataGrid.AsyncQueryEventArgs)
Requirements

Target Platforms: Windows 11, Windows, 10, Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

See Also