IObjectSpace.GetObjectsQuery<T>(Boolean) Method

Gets a queryable data structure that provides functionality to evaluate queries against a specific business object type.

Namespace: DevExpress.ExpressApp

Assembly: DevExpress.ExpressApp.v19.2.dll

Declaration

C#

IQueryable<T> GetObjectsQuery<T>(
    bool inTransaction = false
)

VB.NET

Function GetObjectsQuery(Of T)(
    inTransaction As Boolean = False
) As IQueryable(Of T)

Optional Parameters

Name	Type	Default	Description
inTransaction	Boolean	False	true, if querying a data store for objects includes all in-memory changes into query results; otherwise, false. Has effect in XPO only.

Type Parameters

Name
T

Returns

Type	Description
IQueryable<T>	An IQueryable<T> object that provides functionality to evaluate queries against a specific business object type.

Remarks

You can use the following code to query data in both XPO and EF applications:

C#

IQueryable<Payment> query = objectSpace.GetObjectsQuery<Payment>(true);
object obj = query.Where(p => p.Hours == 4).FirstOrDefault();

VB.NET

Dim query As IQueryable(Of Payment) = objectSpace.GetObjectsQuery(Of Payment)(True)
Dim obj As Object = query.Where(Function(p) p.Hours = 4).FirstOrDefault()

The GetObjectsQuery<T> method has implementations in XPObjectSpace, EFObjectSpace and NonPersistentObjectSpace classes:

• XPObjectSpace.GetObjectsQuery<T>
• EFObjectSpace.GetObjectsQuery<T>
• NonPersistentObjectSpace.GetObjectsQuery<T>