BaseObjectSpace.GetObjects(Type, CriteriaOperator, IList<SortProperty>, Boolean) Method

Returns a sorted IList collection of objects of the specified type, retrieved to the current Object Space and filtered according to the specified criteria.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v23.2.dll

NuGet Package: DevExpress.ExpressApp

Declaration

C#

public IList GetObjects(
    Type objectType,
    CriteriaOperator criteria,
    IList<SortProperty> sorting,
    bool inTransaction
)

VB.NET

Public Function GetObjects(
    objectType As Type,
    criteria As CriteriaOperator,
    sorting As IList(Of SortProperty),
    inTransaction As Boolean
) As IList

Parameters

Name	Type	Description
objectType	Type	The type of the objects to be retrieved.
criteria	CriteriaOperator	A CriteriaOperator which specifies the criteria for object selection.
sorting	IList<SortProperty>	An IList<SortProperty> object that specifies sorting.
inTransaction	Boolean	true if all objects (in the database and retrieved) are processed by the specified criteria; otherwise, false. Has effect in XPO only.

Returns

Type	Description
IList	A IList collection that contains the persistent objects of the specified type. Only objects that satisfy the specified criteria will be retrieved to this collection.

Remarks

Below is an example of using the GetObjects method. Here, objectSpace is the Object Space instance which can be accessed as described in the Ways to Access an Object Space (the Database Context for CRUD Operations) topic.

C#

IList activeUsers = objectSpace.GetObjects(
    typeof(PermissionPolicyUser), new BinaryOperator("IsActive", true), true);

VB.NET

Dim activeUsers As IList = objectSpace.GetObjects( _
GetType(PermissionPolicyUser), New BinaryOperator("IsActive", True), True)

When implementing the IObjectSpace interface in the BaseObjectSpace class’s descendant, don’t implement the GetObjects method. It’s implemented in the BaseObjectSpace class. To get the specified objects, the BaseObjectSpace.GetObjects(Type type, CriteriaOperator criteria, bool inTransaction) method invokes a protected virtual CreateCollection method that does nothing and returns null. So, you should override the CreateCollection method in your descendant.

Implements

GetObjects(Type, CriteriaOperator, IList<SortProperty>, Boolean)