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.NET Framework 4.5.2+

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.v22.1.dll


public DataSourcePropertyIsNullMode DataSourcePropertyIsNullMode { get; }

Property Value

Type Description

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