DataSourcePropertyAttribute.DataSourcePropertyIsNullMode Property

Specifies the Lookup Property Editor's data source, in case the collection property specified by the DataSourcePropertyAttribute.DataSourceProperty is set to null (Nothing in VB).

Namespace: DevExpress.Persistent.Base

Assembly: DevExpress.ExpressApp.v18.2.dll

Declaration

public DataSourcePropertyIsNullMode DataSourcePropertyIsNullMode { get; }
Public ReadOnly Property DataSourcePropertyIsNullMode As DataSourcePropertyIsNullMode

Property Value

Type Description
DataSourcePropertyIsNullMode

A DataSourcePropertyIsNullMode enumeration value that specifies the Lookup Property Editor's data source.

You can change the DataSourcePropertyIsNullMode's value specified in code via the BOModel | <Class> | OwnMembers | <Member> node's IModelCommonMemberViewItem.DataSourcePropertyIsNullMode property in the Model Editor.

To learn how to specify the Lookup Property Editor's data source via the DataSourcePropertyAttribute, refer to the Filter Lookup Editor Data Source topic.

See Also