DataSourcePropertyIsNullMode Enum

Specifies the mode used to populate the data source for a List View displayed in a Lookup Property Editor or List View invoked by the LinkUnlinkController.LinkAction Action in a popup window.

Namespace : DevExpress.Persistent.Base

Assembly : DevExpress.ExpressApp.v25.2.dll

NuGet Package : DevExpress.ExpressApp

Declaration

• C#
• VB.NET

public enum DataSourcePropertyIsNullMode

Public Enum DataSourcePropertyIsNullMode

Members

Specifies that the property’s Lookup List View is bound to an empty collection.

| | SelectAll |

Specifies that the property’s Lookup List View is bound to a collection of all existing persistent objects of the property’s type.

| | CustomCriteria |

Specifies that the Lookup List View is bound to a collection containing the objects that satisfy the criteria. The criteria should be specified by the DataSourcePropertyAttribute.DataSourcePropertyIsNullCriteria parameter of the DataSourcePropertyAttribute.

|

Related API Members

The following properties accept/return DataSourcePropertyIsNullMode values:

• DataSourcePropertyAttribute.DataSourcePropertyIsNullMode
• IModelCommonMemberViewItem.DataSourcePropertyIsNullMode

Remarks

These enumeration values are passed to the DataSourcePropertyAttribute.DataSourcePropertyIsNullMode property.

See Also

Adjust Data Sources for Reference and Collection Properties

DevExpress.Persistent.Base Namespace