XPCollection.Lookup(Object) Method

Retrieves an object from the collection by object ID.

Namespace: DevExpress.Xpo

Assembly: DevExpress.Xpo.v23.2.dll

NuGet Packages: DevExpress.Win.PivotGrid, DevExpress.Win.TreeMap, DevExpress.Xpo

NuGet Package: DevExpress.Xpo

Declaration

C#

public object Lookup(
    object key
)

VB.NET

Public Function Lookup(
    key As Object
) As Object

Parameters

Name	Type	Description
key	Object	ID of an object to retrieve from the collection.

Returns

Type	Description
Object	An object found or null reference (Nothing in VisualBasic) if an object does not exist in the collection.

Remarks

If the XPBaseCollection.LoadingEnabled property is set to true (default value) the collection will be automatically populated with data (if it’s still not populated) when its contents are accessed for the first time.

Note

The Lookup and Session.GetObjectByKey methods do not find objects until they are saved to a data store.