XpoDefault.NullableBehavior Property

Specifies if nullable columns should be created when updating the database schema.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v24.1.dll

NuGet Packages: DevExpress.Win.PivotGrid, DevExpress.Win.TreeMap, DevExpress.Xpo

NuGet Package: DevExpress.Xpo

Declaration

C#

public static NullableBehavior NullableBehavior { get; set; }

VB.NET

Public Shared Property NullableBehavior As NullableBehavior

Property Value

Type	Description
NullableBehavior	A NullableBehavior enumeration value specifying if a nullable column should be created when updating the database schema.

Available values:

Name	Description
Default	The default mode. Has the same effect as AlwaysAllowNulls.
AlwaysAllowNulls	A nullable column is always created.
ByUnderlyingType	A nullable column is created when the mapped property type is not a value type.

Remarks

This global setting can be overridden for an individual persistent class of a field using the:

• NullableAttribute attribute;
• NullableBehaviorAttribute attribute;
• XPDictionary.NullableBehavior property.
• XPClassInfo.NullableBehavior property.