Function BeginLogin( _
   ByVal credential As ILoginCredential, _
   ByVal asyncCallback As AsyncCallback, _
   ByVal userState As Object _
) As IAsyncResult

Dim instance As IEntityManagerAsync
Dim credential As ILoginCredential
Dim asyncCallback As AsyncCallback
Dim userState As Object
Dim value As IAsyncResult
 
value = instance.BeginLogin(credential, asyncCallback, userState)

IAsyncResult BeginLogin( 
   ILoginCredential credential,
   AsyncCallback asyncCallback,
   object userState
)

IAsyncResult^ BeginLogin( 
   ILoginCredential^ credential,
   AsyncCallback^ asyncCallback,
   Object^ userState
)