这两个vb方法在功能上是否相同？

Question

Private Sub ChangeCursor(ByVal target As FrameworkElement, ByVal cursor As Cursor)
    target.Dispatcher.Invoke(DispatcherPriority.Normal,
        New DispatcherOperationCallback( _
            Function()
                Mouse.OverrideCursor = cursor
                Return Nothing
            End Function),
        Nothing)
End Sub

和

Private Sub ChangeCursor(ByVal target As FrameworkElement, ByRef cursor As Cursor)

    target.Dispatcher.Invoke(DispatcherPriority.Normal,
        New DispatcherOperationCallback( _
            Function(cursor1 as Cursor)
                Mouse.OverrideCursor = cursor1
                Return Nothing
            End Function),
        cursor)
End Sub

Answer 1

第二个片段可能更便宜。 lambda不必捕获游标参数的值。它们在功能上是相同的。尽量不要让小东西出汗。

Answer 2

“在功能上”你的意思是“就他们做什么而言”？如果是这样，那么我必须说是。