Public Function CountAsync( _
   Optional ByVal predicate As Expression(Of Func(Of T,Boolean)), _
   Optional ByVal onSuccess As Action(Of Integer), _
   Optional ByVal onFail As Action(Of Exception) _
) As OperationResult(Of Integer)

Visual Basic (Usage)	Copy Code
Dim instance As Repository(Of T) Dim predicate As Expression(Of Func(Of T,Boolean)) Dim onSuccess As Action(Of Integer) Dim onFail As Action(Of Exception) Dim value As OperationResult(Of Integer)   value = instance.CountAsync(predicate, onSuccess, onFail)

public OperationResult<int> CountAsync( 
   Expression<Func<T,bool>> predicate,
   Action<int> onSuccess,
   Action<Exception> onFail
)

public:
OperationResult<int>^ CountAsync( 
   Expression<Func<T^,bool>^>^ predicate,
   Action<int>^ onSuccess,
   Action<Exception^>^ onFail
) 

Parameters

predicate

Optional predicate to filter the entities

onSuccess

Optional callback to be called when the count was successful.

onFail

Optional callback to be called when the count failed.

Return Value

Target Platforms: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family, Windows Vista, Windows Server 2008 family

Reference