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.NET Standard 2.0+

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.v22.1.dll

Declaration

public enum DataSourcePropertyIsNullMode

Members

Name Description
SelectNothing

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.

Remarks

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

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

Note

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See Also