[Expand]General Information
[Expand]WinForms Controls
[Expand]ASP.NET Controls and MVC Extensions
[Expand]ASP.NET Bootstrap Controls
[Expand]ASP.NET Core Bootstrap Controls
[Expand]WPF Controls
[Expand]Xamarin Controls
[Expand]Windows 10 App Controls
[Expand]Office File API
[Expand]Reporting
[Expand]Report and Dashboard Server
[Expand]Dashboard
[Collapse]eXpressApp Framework
 [Expand]Fundamentals
 [Expand]Getting Started
 [Expand]Concepts
 [Expand]Design-Time Features
 [Expand]Deployment
 [Expand]Task-Based Help
  Frequently Asked Questions (FAQ)
 [Collapse]API Reference
  [Expand]DevExpress.EasyTest.Framework
  [Collapse]DevExpress.ExpressApp
   [Expand]BaseObjectSpace Class
    CheckCompatibilityType Enumeration
   [Expand]CollectionSource Class
   [Expand]CollectionSourceBase Class
    CollectionSourceDataAccessMode Enumeration
    CollectionSourceMode Enumeration
   [Expand]CollectionSourceModeAttribute Class
   [Expand]CompositeView Class
    ConfirmationResult Enumeration
    ConfirmationType Enumeration
   [Expand]Controller Class
   [Expand]CreateCustomCollectionSourceEventArgs Class
   [Expand]CreateCustomCurrentObjectDetailViewEventArgs Class
   [Expand]CreateCustomLogonParameterStoreEventArgs Class
   [Expand]CreateCustomLogonWindowControllersEventArgs Class
   [Expand]CreateCustomLogonWindowObjectSpaceEventArgs Class
   [Expand]CreateCustomModelCacheManagerEventArgs Class
   [Expand]CreateCustomModelDifferenceStoreEventArgs Class
   [Expand]CreateCustomObjectSpaceProviderEventArgs Class
   [Expand]CreateCustomPropertyCollectionSourceEventArgs Class
   [Expand]CreateCustomTemplateEventArgs Class
   [Expand]CustomCheckCompatibilityEventArgs Class
   [Expand]CustomHasPermissionToEventArgs Class
   [Expand]CustomizeFormattingCultureEventArgs Class
   [Expand]CustomizeLanguageEventArgs Class
   [Expand]CustomizeTemplateEventArgs Class
   [Expand]CustomizeViewShortcutArgs Class
   [Expand]CustomProcessShortcutEventArgs Class
   [Expand]DashboardView Class
   [Expand]DashboardViewCreatedEventArgs Class
   [Expand]DashboardViewCreatingEventArgs Class
    DatabaseUpdateMode Enumeration
   [Expand]DatabaseVersionMismatchEventArgs Class
   [Expand]DefaultListViewOptionsAttribute Class
   [Expand]DetailView Class
   [Expand]DetailViewCreatedEventArgs Class
   [Expand]DetailViewCreatingEventArgs Class
   [Expand]Frame Class
    FrameContext Enumeration
   [Expand]IModelDifference Interface
   [Collapse]IModelDifferenceAspect Interface
     IModelDifferenceAspect Members
    [Expand]IModelDifferenceAspect Properties
   [Expand]IModelExtender Interface
    InformationPosition Enumeration
    InformationType Enumeration
   [Expand]IObjectSpace Interface
   [Expand]IObjectSpaceLink Interface
   [Expand]IObjectSpaceProvider Interface
   [Expand]ISettingsProvider Interface
   [Expand]ISupportNewItemRowPosition Interface
   [Expand]ISupportUpdate Interface
   [Expand]IXafEntityObject Interface
   [Expand]LastLogonParametersReadEventArgs Class
   [Expand]LastLogonParametersReadingEventArgs Class
   [Expand]LastLogonParametersWritingEventArgs Class
   [Expand]ListView Class
   [Expand]ListViewCreatedEventArgs Class
   [Expand]ListViewCreatingEventArgs Class
   [Expand]ListViewFindPanelAttribute Class
   [Expand]LoggingOffEventArgs Class
   [Expand]LogonEventArgs Class
   [Expand]LogonFailedEventArgs Class
    LookupEditCollectionSourceMode Enumeration
   [Expand]LookupEditPropertyCollectionSource Class
    MasterDetailMode Enumeration
   [Expand]MessageOptions Class
   [Expand]ModelCacheManager Class
   [Expand]ModelDifferenceStore Class
   [Expand]ModelStoreBase Class
   [Expand]ModuleBase Class
   [Expand]NestedFrame Class
    Nesting Enumeration
    NewItemRowPosition Enumeration
    NewWindowTarget Enumeration
   [Expand]NonPersistentObjectSpace Class
   [Expand]ObjectChangedEventArgs Class
   [Expand]ObjectManipulatingEventArgs Class
   [Expand]ObjectsCountGettingEventArgs Class
   [Expand]ObjectsManipulatingEventArgs Class
   [Expand]ObjectSpaceCreatedEventArgs Class
   [Expand]ObjectView Class
   [Expand]ObjectViewController Class
   [Expand]ObjectViewController<ViewType, ObjectType> Class
   [Expand]ProcessActionContainerEventArgs Class
   [Expand]PropertyCollectionSource Class
    SchemaUpdateMode Enumeration
   [Expand]SecuritySystem Class
    SelectionType Enumeration
   [Expand]ShowViewParameters Class
   [Expand]ShowViewSource Class
   [Expand]ShowViewStrategyBase Class
    TargetWindow Enumeration
   [Expand]TemplateContext Structure
    UIType Enumeration
   [Expand]ValidateObjectEventArgs Class
   [Expand]View Class
   [Expand]ViewController Class
   [Expand]ViewController<ViewType> Class
   [Expand]ViewCreatedEventArgs Class
   [Expand]ViewCreatingEventArgs Class
   [Expand]ViewItemsChangedEventArgs Class
    ViewItemsChangedType Enumeration
   [Expand]ViewShortcut Class
   [Expand]ViewShowingEventArgs Class
   [Expand]ViewShownEventArgs Class
    ViewType Enumeration
   [Expand]WebMessageOptions Class
   [Expand]Window Class
   [Expand]WindowController Class
    WindowType Enumeration
   [Expand]WinMessageOptions Class
    WinMessageType Enumeration
   [Expand]XafApplication Class
   [Expand]XafDataView Class
   [Expand]XafDataViewRecord Class
   [Expand]XafInstantFeedbackRecord Class
  [Expand]DevExpress.ExpressApp.Actions
  [Expand]DevExpress.ExpressApp.AuditTrail
  [Expand]DevExpress.ExpressApp.Chart
  [Expand]DevExpress.ExpressApp.Chart.Web
  [Expand]DevExpress.ExpressApp.Chart.Win
  [Expand]DevExpress.ExpressApp.CloneObject
  [Expand]DevExpress.ExpressApp.ConditionalAppearance
  [Expand]DevExpress.ExpressApp.Dashboards
  [Expand]DevExpress.ExpressApp.Dashboards.Web
  [Expand]DevExpress.ExpressApp.Dashboards.Win
  [Expand]DevExpress.ExpressApp.Data
  [Expand]DevExpress.ExpressApp.DC
  [Expand]DevExpress.ExpressApp.DC.ClassGeneration
  [Expand]DevExpress.ExpressApp.Editors
  [Expand]DevExpress.ExpressApp.EF
  [Expand]DevExpress.ExpressApp.EF.Utils
  [Expand]DevExpress.ExpressApp.FileAttachments.Web
  [Expand]DevExpress.ExpressApp.FileAttachments.Win
  [Expand]DevExpress.ExpressApp.Filtering
  [Expand]DevExpress.ExpressApp.HtmlPropertyEditor.Web
  [Expand]DevExpress.ExpressApp.HtmlPropertyEditor.Win
  [Expand]DevExpress.ExpressApp.Kpi
  [Expand]DevExpress.ExpressApp.Layout
  [Expand]DevExpress.ExpressApp.Maps.Mobile
  [Expand]DevExpress.ExpressApp.Maps.Mobile.Editors
  [Expand]DevExpress.ExpressApp.Maps.Web
  [Expand]DevExpress.ExpressApp.Maps.Web.Helpers
  [Expand]DevExpress.ExpressApp.MiddleTier
  [Expand]DevExpress.ExpressApp.Mobile
  [Expand]DevExpress.ExpressApp.Mobile.Editors
  [Expand]DevExpress.ExpressApp.Mobile.MobileModel
  [Expand]DevExpress.ExpressApp.Mobile.SystemModule
  [Expand]DevExpress.ExpressApp.Mobile.Templates
  [Expand]DevExpress.ExpressApp.Model
  [Expand]DevExpress.ExpressApp.Model.Core
  [Expand]DevExpress.ExpressApp.Model.NodeGenerators
  [Expand]DevExpress.ExpressApp.ModelEditor
  [Expand]DevExpress.ExpressApp.Notifications
  [Expand]DevExpress.ExpressApp.Notifications.Web
  [Expand]DevExpress.ExpressApp.Notifications.Win
  [Expand]DevExpress.ExpressApp.Office.Win
  [Expand]DevExpress.ExpressApp.PivotChart
  [Expand]DevExpress.ExpressApp.PivotChart.Web
  [Expand]DevExpress.ExpressApp.PivotChart.Win
  [Expand]DevExpress.ExpressApp.PivotGrid
  [Expand]DevExpress.ExpressApp.PivotGrid.Web
  [Expand]DevExpress.ExpressApp.PivotGrid.Win
  [Expand]DevExpress.ExpressApp.Reports
  [Expand]DevExpress.ExpressApp.Reports.Web
  [Expand]DevExpress.ExpressApp.Reports.Win
  [Expand]DevExpress.ExpressApp.ReportsV2
  [Expand]DevExpress.ExpressApp.ReportsV2.Mobile
  [Expand]DevExpress.ExpressApp.ReportsV2.Web
  [Expand]DevExpress.ExpressApp.ReportsV2.Win
  [Expand]DevExpress.ExpressApp.Scheduler
  [Expand]DevExpress.ExpressApp.Scheduler.Web
  [Expand]DevExpress.ExpressApp.Scheduler.Win
  [Expand]DevExpress.ExpressApp.ScriptRecorder
  [Expand]DevExpress.ExpressApp.ScriptRecorder.Web
  [Expand]DevExpress.ExpressApp.ScriptRecorder.Win
  [Expand]DevExpress.ExpressApp.Security
  [Expand]DevExpress.ExpressApp.Security.Adapters
  [Expand]DevExpress.ExpressApp.Security.ClientServer.Wcf
  [Expand]DevExpress.ExpressApp.Security.EF.Adapters
  [Expand]DevExpress.ExpressApp.Security.Strategy
  [Expand]DevExpress.ExpressApp.Security.Xpo.Adapters
  [Expand]DevExpress.ExpressApp.StateMachine
  [Expand]DevExpress.ExpressApp.SystemModule
  [Expand]DevExpress.ExpressApp.Templates
  [Expand]DevExpress.ExpressApp.Templates.ActionContainers
  [Expand]DevExpress.ExpressApp.TreeListEditors
  [Expand]DevExpress.ExpressApp.TreeListEditors.Web
  [Expand]DevExpress.ExpressApp.TreeListEditors.Win
  [Expand]DevExpress.ExpressApp.Updating
  [Expand]DevExpress.ExpressApp.Utils
  [Expand]DevExpress.ExpressApp.Validation
  [Expand]DevExpress.ExpressApp.Validation.Web
  [Expand]DevExpress.ExpressApp.Validation.Win
  [Expand]DevExpress.ExpressApp.ViewVariantsModule
  [Expand]DevExpress.ExpressApp.Web
  [Expand]DevExpress.ExpressApp.Web.Controls
  [Expand]DevExpress.ExpressApp.Web.Editors
  [Expand]DevExpress.ExpressApp.Web.Editors.ASPx
  [Expand]DevExpress.ExpressApp.Web.SystemModule
  [Expand]DevExpress.ExpressApp.Web.Templates
  [Expand]DevExpress.ExpressApp.Web.Utils
  [Expand]DevExpress.ExpressApp.Win
  [Expand]DevExpress.ExpressApp.Win.Core
  [Expand]DevExpress.ExpressApp.Win.Editors
  [Expand]DevExpress.ExpressApp.Win.Model
  [Expand]DevExpress.ExpressApp.Win.SystemModule
  [Expand]DevExpress.ExpressApp.Win.Templates
  [Expand]DevExpress.ExpressApp.Win.Templates.Navigation
  [Expand]DevExpress.ExpressApp.Win.Utils
  [Expand]DevExpress.ExpressApp.Workflow
  [Expand]DevExpress.ExpressApp.Workflow.Win
  [Expand]DevExpress.ExpressApp.Xpo
  [Expand]DevExpress.ExpressApp.Xpo.Utils
  [Expand]DevExpress.Persistent.Base
  [Expand]DevExpress.Persistent.Base.General
  [Expand]DevExpress.Persistent.Base.ReportsV2
  [Expand]DevExpress.Persistent.Base.Security
  [Expand]DevExpress.Persistent.BaseImpl
  [Expand]DevExpress.Persistent.BaseImpl.EF
  [Expand]DevExpress.Persistent.BaseImpl.EF.PermissionPolicy
  [Expand]DevExpress.Persistent.BaseImpl.PermissionPolicy
  [Expand]DevExpress.Persistent.Validation
[Expand]eXpress Persistent Objects
[Expand]CodeRush
[Expand]CodeRush Classic
[Expand]Cross-Platform Core Libraries
[Expand]Tools and Utilities
 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

IModelDifferenceAspect Interface

Declares members implemented by entities (persistent classes) used to store model difference aspects 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 IModelDifference.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 IModelDifference.Aspects property exposes the list of model difference aspects (IModelDifferenceAspect objects). The IModelDifferenceAspect aspect with the empty 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 Xml property.

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

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

Expanded Inheritance Hierarchy

Expanded See Also

Is this topic helpful?​​​​​​​