PropertyCollectionSource.MasterObject Property

Provides access to the object, whose collection property is represented by the current PropertyCollectionSource.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v24.2.dll

NuGet Package: DevExpress.ExpressApp

Declaration

C#

public object MasterObject { get; set; }

VB.NET

Public Property MasterObject As Object

Property Value

Type	Description
Object	An object, whose collection property is represented by the current PropertyCollectionSource.

Remarks

When an object contains a collection property, this property is displayed in a Detail View via a nested List View. If a Detail View’s DetailView.CurrentObject has not been assigned, the MasterObject property of the nested List View’s Collection Source may return null (Nothing in VB).

To track changes of the MasterObject, subscribe to the PropertyCollectionSource.MasterObjectChanged event.

To see an example of accessing this property, refer to the How to: Access the Master Object from a Nested List View help topic.

Related GitHub Examples

The following code snippet (auto-collected from DevExpress Examples) contains a reference to the MasterObject property.

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.

C#

XAF_Non-Persistent-Objects-Edit-Linked-Persistent-Objects-Demo/CS/NonPersistentObjectsDemo.Module/Controllers/ProductViewNestedCollectionController.cs#L20

if(linkUnlinkController != null) {
    linkUnlinkController.Active["NotInProductView"] = !(pcs != null && (pcs.MasterObject is ProductView));
}

VB.NET

XAF_Non-Persistent-Objects-Edit-Linked-Persistent-Objects-Demo/VB/NonPersistentObjectsDemo.Module/Controllers/ProductViewNestedCollectionController.vb#L22

If linkUnlinkController IsNot Nothing Then
    linkUnlinkController.Active("NotInProductView") = Not (pcs IsNot Nothing AndAlso (TypeOf pcs.MasterObject Is ProductView))
End If