[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
[Expand]eXpressApp Framework
[Collapse]eXpress Persistent Objects
 [Expand]Product Information
 [Expand]Getting Started
 [Expand]Fundamentals
 [Expand]Feature Center
 [Expand]Concepts
 [Expand]Design-Time Features
 [Expand]Examples
 [Expand]Member Tables
 [Collapse]API Reference
  [Collapse]DevExpress.Xpo
   [Expand]AggregatedAttribute Class
   [Expand]AssociationAttribute Class
    AsyncBehavior Enumeration
    AsyncCommitCallback Delegate
    AsyncSelectDataCallback Delegate
    CacheBehavior Enumeration
    CollectionBindingBehavior Enumeration
   [Expand]ColumnDbDefaultValueAttribute Class
   [Expand]ColumnDefaultValueAttribute Class
   [Expand]CommitObjectStubsResult Class
   [Expand]CustomAttribute Class
   [Expand]CustomCriteriaManager Class
   [Expand]DataViewPropertiesCollection Class
   [Expand]DataViewProperty Class
   [Expand]DataViewRecord Class
   [Expand]DbTypeAttribute Class
    DefaultMembersPersistence Enumeration
   [Expand]DefaultMembersPersistenceAttribute Class
   [Expand]DeferredDeletionAttribute Class
   [Expand]DelayedAttribute Class
   [Expand]DisplayNameAttribute Class
   [Expand]ExplicitLoadingAttribute Class
   [Expand]ExplicitUnitOfWork Class
   [Expand]FetchOnlyAttribute Class
   [Expand]GetObjectStubsByKeyQuery Class
    GuidGenerationMode Enumeration
   [Expand]HiddenAttribute Class
   [Expand]ICustomCriteriaOperatorQueryable Interface
   [Expand]ICustomFunctionOperatorQueryable Interface
   [Expand]IDataLayer Interface
   [Expand]IDataLayerAsync Interface
    IdentityMapBehavior Enumeration
   [Expand]IndexedAttribute Class
   [Expand]IndicesAttribute Class
   [Expand]IObjectLayer Interface
   [Expand]IObjectLayerAsync Interface
   [Expand]IObjectLayerEx Interface
   [Expand]IObjectLayerOnSession Interface
   [Expand]ISerializableObjectLayer Interface
   [Expand]ISerializableObjectLayerEx Interface
   [Expand]IXPModificationsStore Interface
   [Expand]IXPObject Interface
   [Expand]IXPSimpleObject Interface
   [Expand]KeyAttribute Class
   [Expand]LoadDataMemberOrderItem Structure
    LockingOption Enumeration
   [Expand]MapInheritanceAttribute Class
    MapInheritanceType Enumeration
   [Expand]MapToAttribute Class
   [Expand]MemberDesignTimeVisibilityAttribute Class
   [Expand]MergeCollisionBehaviorAttribute Class
   [Expand]NestedUnitOfWork Class
   [Expand]NoForeignKeyAttribute Class
   [Expand]NonPersistentAttribute Class
   [Expand]NullableAttribute Class
    NullableBehavior Enumeration
   [Expand]NullableBehaviorAttribute Class
   [Expand]NullValueAttribute Class
   [Expand]ObjectChangeEventArgs Class
    ObjectChangeEventHandler Delegate
    ObjectChangeReason Enumeration
   [Expand]ObjectManipulationEventArgs Class
    ObjectManipulationEventHandler Delegate
   [Expand]ObjectsByKeyQuery Class
   [Expand]ObjectsManipulationEventArgs Class
    ObjectsManipulationEventHandler Delegate
   [Expand]ObjectsQuery Class
   [Expand]ObjectStubsQuery Class
   [Expand]OptimisticLockingAttribute Class
    OptimisticLockingBehavior Enumeration
   [Expand]OptimisticLockingIgnoredAttribute Class
    OptimisticLockingReadBehavior Enumeration
   [Expand]OptimisticLockingReadBehaviorAttribute Class
    OptimisticLockingReadMergeBehavior Enumeration
   [Expand]PersistentAliasAttribute Class
   [Expand]PersistentAttribute Class
   [Expand]PersistentBase Class
    PersistentCriteriaEvaluationBehavior Enumeration
   [Expand]ResolveSessionEventArgs Class
    ResolveSessionEventHandler Delegate
   [Expand]SchemaInitEventArgs Class
    SchemaInitEventHandler Delegate
   [Expand]SerializableObjectLayer Class
   [Expand]SerializableObjectLayerClient Class
    ServerExceptionThrownAction Enumeration
   [Expand]ServerExceptionThrownEventArgs Class
    ServerExceptionThrownEventHandler Delegate
   [Expand]ServerViewPropertiesCollection Class
   [Expand]ServerViewProperty Class
   [Expand]Session Class
   [Expand]SessionManipulationEventArgs Class
    SessionManipulationEventHandler Delegate
   [Expand]SessionObjectLayer Class
   [Expand]SessionOperationFailEventArgs Class
    SessionOperationFailEventHandler Delegate
   [Expand]SimpleDataLayer Class
   [Expand]SimpleObjectLayer Class
   [Expand]SizeAttribute Class
   [Expand]SkipCheckForFeedsAttribute Class
    SortDirection Enumeration
   [Expand]SortingCollection Class
   [Expand]StreamAttribute Class
   [Expand]ThreadSafeDataLayer Class
   [Expand]UnitOfWork Class
   [Expand]ValueConverterAttribute Class
   [Expand]ViewPropertiesCollection Class
   [Expand]ViewProperty Class
   [Expand]ViewRecord Class
   [Expand]VisibleAttribute Class
   [Collapse]XPBaseCollection Class
     XPBaseCollection Members
    [Collapse]XPBaseCollection Properties
      BindingBehavior Property
      CaseSensitive Property
      ClearCount Property
      Count Property
      Criteria Property
      CriteriaString Property
      DeleteObjectOnRemove Property
      DisplayableProperties Property
      EnableObjectChangedNotificationsWhileEditing Property
      Filter Property
      HintCollection Property
      IsAsyncLoading Property
      IsLoaded Property
      LoadingEnabled Property
      SelectDeleted Property
      Session Property
      SkipReturnedObjects Property
      Sorting Property
      TopReturnedObjects Property
    [Expand]XPBaseCollection Events
    [Expand]XPBaseCollection Methods
   [Expand]XPBaseObject Class
   [Expand]XPBindingSource Class
   [Expand]XPClassInfoStub Class
   [Expand]XPCollection Class
   [Expand]XPCollection<T> Class
   [Expand]XPCollectionChangedEventArgs Class
    XPCollectionChangedEventHandler Delegate
    XPCollectionChangedType Enumeration
   [Expand]XPCursor Class
   [Expand]XPCustomObject Class
   [Expand]XPDataObject Class
   [Expand]XPDataView Class
   [Expand]XPDelayedProperty Class
   [Expand]XPDictionaryStub Class
   [Expand]XPInstantFeedbackSource Class
   [Expand]XPInstantFeedbackView Class
   [Expand]XPLiteObject Class
   [Expand]XPObject Class
   [Expand]XPObjectSource Class
   [Expand]XPObjectSourcePropertiesCollection Class
   [Expand]XPObjectSourceProperty Class
   [Expand]XPObjectSourceRecord Class
   [Expand]XPObjectStub Class
   [Expand]XPObjectStubCollection Class
   [Expand]XPObjectType Class
   [Expand]XpoDataSource Class
   [Expand]XpoDataSourceInsertedEventArgs Class
    XpoDataSourceInsertedEventHandler Delegate
   [Expand]XpoDefault Class
   [Expand]XPPageSelector Class
   [Expand]XPQuery<T> Class
   [Expand]XPQueryBase Class
   [Expand]XPQueryExtensions Class
   [Expand]XPServerCollectionSource Class
   [Expand]XPServerModeView Class
   [Expand]XPView Class
   [Expand]XPWeakReference Class
  [Expand]DevExpress.Xpo.DB
  [Expand]DevExpress.Xpo.DB.Helpers
  [Expand]DevExpress.Xpo.Exceptions
  [Expand]DevExpress.Xpo.Helpers
  [Expand]DevExpress.Xpo.Metadata
[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)

XPBaseCollection.LoadingEnabled Property

Gets or sets whether loading of data from a data store to the collection is enabled.

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

Expanded Syntax

Property value

Type: Boolean
true if data can be loaded; otherwise, false.
The default is true.

Expanded Remarks

If this property is set to true and the collection's contents are accessed for the first time, the collection is automatically populated with data from a data store. If the collection has already been loaded, setting the LoadingEnabled property to true calls the collection's Reload method.

Setting the LoadingEnabled property to false disables the automatic load. Calling the Load or LoadAsync method when the LoadingEnabled property is set to false will not load data from the data store.

Note that when an XPCollection is created using a constructor with the criteriaEvaluationBehavior parameter, the collection is loaded immediately and its LoadingEnabled property is automatically set to false. After that, the collection cannot be reloaded using the Reload method, since object loading is disabled.

Expanded Example

In the following example a new XPCollection collection is created. Its LoadingEnabled property is set to false thus disabling the automatic load of data from an underlying data store (from the "Person" table in the database). Such unbound collections can be used to store lists of objects when there is no need to retrieve data from the underlying data store.

Expanded See Also

Is this topic helpful?​​​​​​​