[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
   [Expand]IModelDifferenceAspect Interface
   [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
   [Collapse]NonPersistentObjectSpace Class
     NonPersistentObjectSpace Members
    [Expand]NonPersistentObjectSpace Constructor
    [Expand]NonPersistentObjectSpace Properties
    [Expand]NonPersistentObjectSpace Events
    [Expand]NonPersistentObjectSpace Methods
   [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)

NonPersistentObjectSpace Class

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

Expanded Syntax

Expanded Remarks

To enable the use of NonPersistentObjectSpace, the following code should be added to the overridden CreateDefaultObjectSpaceProvider method located in the WinApplication.cs (WinApplication.vb) and/or WebApplication.cs (WebApplication.vb) file (in addition to the existing XPObjectSpaceProvider or EFObjectSpaceProvider).

Currently, this code is added automatically by the Solution Wizard, but it may be missing if you have created your project using an older version of XAF.

Note

XAF uses the first registered Object Space Provider for the following purposes:

Ensure that NonPersistentObjectSpaceProvider is not the first registered Provider in your application.

To supply non-persistent objects for NonPersistentObjectSpace, use the ObjectsGetting event that occurs when NonPersistentObjectSpace creates an object collection. You can find examples in the following topics:

To supply an object returned by the GetObject method, use the ObjectGetting event.

The New, Delete and Save Actions are available for Non-Persistent Objects. To access all created, deleted and modified objects within NonPersistentObjectSpace, use the ModifiedObjects property.

The IObjectSpaceLink.ObjectSpace property of non-persistent objects that support IObjectSpaceLink is initialized in these cases:

If an object from another Object Space passed to the GetObject method implements IObjectSpaceLink, and its ObjectSpace property is null, the current NonPersistentObjectSpace assigns a link to itself in this property. Similar behavior is implemented for objects returned by the GetObjects and CreateCollection methods using the ObjectsGetting event.

Expanded Inheritance Hierarchy

System.Object
    BaseObjectSpace
       NonPersistentObjectSpace

Expanded See Also

Is this topic helpful?​​​​​​​