[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
  [Expand]DevExpress.ExpressApp
  [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
  [Collapse]DevExpress.ExpressApp.Xpo
   [Expand]CalculatedPersistentAliasAttribute Class
    XPInstantFeedbackSourceMappingMode Enumeration
   [Collapse]XPObjectSpace Class
     XPObjectSpace Members
    [Expand]XPObjectSpace Constructor
    [Expand]XPObjectSpace Properties
    [Collapse]XPObjectSpace Methods
      ApplyCriteria Method
      ApplyFilter Method
      CanApplyCriteria Method
      CanApplyFilter Method
      CanInstantiate Method
      CombineCriteria Method
      CommitChangesAsync Method
      Contains Method
      CreateInstantFeedbackCollection Method
      CreateNestedObjectSpace Method
      CreateParseCriteriaScope Method
      CreateServerCollection Method
      CreateSortingCollection Method
      Dispose Method
      EnableObjectDeletionOnRemove Method
      Evaluate Method
     [Expand]FindObject Method
      FindObjectSpaceByObject Method
      GetCollectionObjectType Method
      GetCollectionSorting Method
      GetCriteria Method
      GetDisplayableProperties Method
      GetEvaluatorContextDescriptor Method
      GetFilter Method
      GetIntermediateObjectReferences Method
     [Expand]GetKeyValue Method
     [Expand]GetKeyValueAsString Method
      GetListServer Method
      GetObject Method
      GetObjectByKey Method
      GetObjectKey Method
      GetObjectsQuery<T> Method
      GetObjectsToDelete Method
      GetObjectsToSave Method
      GetTopReturnedObjectsCount Method
      IsCollectionLoaded Method
      IsDeletedObject Method
      IsDeletionDeferredType Method
      IsDisposedObject Method
      IsIntermediateObject Method
      IsNewObject Method
      IsObjectDeletionOnRemoveEnabled Method
      IsObjectToDelete Method
      IsObjectToSave Method
      ParseCriteria Method
      RaiseObjectPropertyChanged Method
      ReloadCollection Method
      ReloadObject Method
      RemoveFromModifiedObjects Method
      SetCollectionSorting Method
      SetDisplayableProperties Method
      SetPrefetchPropertyNames Method
      SetTopReturnedObjectsCount Method
      TryGetObjectHandle Method
   [Expand]XPObjectSpaceProvider Class
   [Expand]XpoDataView Class
   [Expand]XpoDataViewRecord Class
   [Expand]XpoTypesInfoHelper Class
  [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)

XPObjectSpace.Evaluate Method

Evaluates the specified criteria for business objects of the given type.

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

Expanded Syntax

Parameters

objectType
Type: Type
A System.Type object that identifies the type of objects against which the expression will be evaluated.
expression
Type: CriteriaOperator
A DevExpress.Data.Filtering.CriteriaOperator object that specifies the expression to evaluate.
criteria
Type: CriteriaOperator
A DevExpress.Data.Filtering.CriteriaOperator object that specifies the filter criteria. The objects that match this criteria will be used to evaluate the expression.

Return value

Type: Object
The value evaluated.

Expanded Remarks

To construct expression and criteria, the static DevExpress.Data.Filtering.CriteriaOperator.Parse method can be used. It takes a string representation of the required expression and retrieves the DevExpress.Data.Filtering.CriteriaOperator object that corresponds to this expression.

Expanded See Also

Is this topic helpful?​​​​​​​