DataServiceContext.TryGetEntity<TEntity> Method
Test retrieval of an entity being tracked by the DataServiceContext by reference to the URI of the entity.
Namespace: System.Data.Services.Client
Assembly: Microsoft.Data.Services.Client (in Microsoft.Data.Services.Client.dll)
Syntax
'Declaration
Public Function TryGetEntity(Of TEntity As Class) ( _
identity As Uri, _
<OutAttribute> ByRef entity As TEntity _
) As Boolean
'Usage
Dim instance As DataServiceContext
Dim identity As Uri
Dim entity As TEntity
Dim returnValue As Boolean
returnValue = instance.TryGetEntity(identity, _
entity)
public bool TryGetEntity<TEntity>(
Uri identity,
out TEntity entity
)
where TEntity : class
public:
generic<typename TEntity>
where TEntity : ref class
bool TryGetEntity(
Uri^ identity,
[OutAttribute] TEntity% entity
)
member TryGetEntity :
identity:Uri *
entity:'TEntity byref -> bool when 'TEntity : not struct
JScript does not support generic types and methods.
Type Parameters
- TEntity
The type of the entity.
Parameters
- identity
Type: System.Uri
The URI of the tracked entity to be retrieved.
- entity
Type: TEntity%
The entity to be retrieved.
Return Value
Type: System.Boolean
If an entity is found at resourceUri, the entity is returned in the out parameter entity and true is returned. If no entity is found, false is returned.
Exceptions
| Exception | Condition |
|---|---|
| ArgumentNullException | When identity is nulla null reference (Nothing in Visual Basic). |
Remarks
If an entity is in the Detached or Added state, it does not have a URI and cannot be retrieved by using this method.