expressappframework-devexpress-dot-expressapp-dot-xafapplication-c5a54613.md
Occurs when creating a Collection Source for a List View.
Namespace : DevExpress.ExpressApp
Assembly : DevExpress.ExpressApp.v25.2.dll
NuGet Package : DevExpress.ExpressApp
public event EventHandler<CreateCustomCollectionSourceEventArgs> CreateCustomCollectionSource
Public Event CreateCustomCollectionSource As EventHandler(Of CreateCustomCollectionSourceEventArgs)
The CreateCustomCollectionSource event's data class is CreateCustomCollectionSourceEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| CollectionSource | Specifies a custom Collection Source to be used by a List View. |
| DataAccessMode | Specifies the mode used to access the Collection Source’s collection. |
| ListViewID | Specifies the identifier of the List View for which a custom Collection Source will be created. |
| Mode | Specifies the mode of operation for the custom Collection Source. |
| ObjectSpace | Specifies an Object Space to be used by the custom Collection Source. |
| ObjectType | Specifies the type of objects that will be retrieved from the database into the custom Collection Source. |
This event is raised as a result of calling the XafApplication.CreateCollectionSource method. Handle this event to create a descendant of the CollectionSourceBase class, if you need to create a custom behavior of a List View’s Collection Source. Assign the custom Collection Source to the handler’s CollectionSource property.
To create a custom Collection Source for a nested List View, handle the XafApplication.CreateCustomPropertyCollectionSource event.
See Also