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 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

IModelDifference Interface

Declares members implemented by entities (persistent classes) used to store model differences in the database.

Namespace:DevExpress.ExpressApp
Assembly:DevExpress.ExpressApp.v19.1.dll

Expanded Syntax

Expanded Remarks

When model differences are stored in the database, each user has the associated IModelDifference object. The UserId property specifies the identifier of the user who owns the current IModelDifference object. If the UserId is not specified, the current IModelDifference object specifies the model differences layer shared by all users (administrator model differences). The Aspects property exposes the list of model difference aspects (IModelDifferenceAspect objects). The aspect with an empty IModelDifferenceAspect.Name property is the default culture-neutral aspect. Aspects with the Name set to a certain language code are used in localized applications. The XML code of a particular model difference aspect is available via the IModelDifferenceAspect.Xml property.

The ModelDifference class from the DevExpress.Persistent.BaseImpl namespace is a built-in implementation of this interface that can be used in XPO applications. In Entity Framework applications, the similar ModelDifference entity from the DevExpress.Persistent.BaseImpl.EF namespace can be used.

To create a custom persistent container for the model differences, do the following:

Expanded Inheritance Hierarchy

Expanded See Also

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