public Nullable<Guid> GetUserIdByProviderKey(
	Guid providerInstanceId,
	string providerKey
)

Public Function GetUserIdByProviderKey ( 
	providerInstanceId As Guid,
	providerKey As String
) As Nullable(Of Guid)

public:
Nullable<Guid> GetUserIdByProviderKey(
	Guid providerInstanceId, 
	String^ providerKey
)

member GetUserIdByProviderKey : 
        providerInstanceId : Guid * 
        providerKey : string -> Nullable<Guid>