Ho un form con un timer e un bottone. Il codice non mi segna erroe tranne che nell'event handler tick, sicuramente non ho importato qualkosa credo... mi potet aiutare?

codice:
Imports System.Timers.Timer

Public Class Form1

    Inherits System.Windows.Forms.Form

.....

Private Sub InitializeTimer()
        ' Run this procedure in an appropriate event.
        ' Set to 1 second.
        Timer1.Interval = 1000
        ' Enable timer.
        Timer1.Enabled = True
        Button1.Text = "Enabled"
    End Sub

    Private Sub Timer1_Tick(ByVal Sender As Object, ByVal e As EventArgs) Handles Timer1.Tick
' Quì a questo tick mi dà errore
        ' Set the caption to the current time.
        Label1.Text = DateTime.Now
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If Button1.Text = "Stop" Then
            Button1.Text = "Start"
            Timer1.Enabled = False
        Else
            Button1.Text = "Stop"
            Timer1.Enabled = True
        End If
    End Sub
End Class