Label kan ikke følge med Dispatchertimer

Maa vi se noget kode?

Her er den simple udgave.
Start tæller på start - Stop tæller på stop

Imports System.Threading.Timer


Partial Public Class MainPage
    Inherits UserControl

    Dim WithEvents t As New Windows.Threading.DispatcherTimer

    Public Sub New()
        InitializeComponent()
        t.Interval = New TimeSpan(0, 0, 0, 0, 1)

    End Sub


    Private Sub t_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles t.Tick
        Dim count As Integer

        count = CInt(Label1.Content)
        count += 1
        Label1.Content = count.ToString()

    End Sub

    Private Sub Button1_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button1.Click
        t.Start()
    End Sub

    Private Sub Button2_Click(sender As System.Object, e As System.Windows.RoutedEventArgs) Handles Button2.Click
        t.Stop()
    End Sub
End Class