How to reset timer

[astrid22]

Hi, I'm trying to reset a timer on button click from another form, so when it opens the form where the timer is, it will restart on the number of minutes saved in my database. I was able to restart the timer but it only resumes the time and not resets it. Here's my code that I put in my module:

Public TargetDT As DateTime

    Public Sub RestartTimer()

        Dim CountDownFrom As TimeSpan = TimeSpan.FromMinutes(frmTakeTest.lblTimer.Text)

        frmTakeTest.Timer1.Interval = 500
        TargetDT = DateTime.Now.Add(CountDownFrom)
        frmTakeTest.Timer1.Start()
    End Sub

and here's what's on the form where the timer is:

 Dim TargetDT As DateTime
    Private CountDownFrom As TimeSpan = TimeSpan.FromMinutes(0)

Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick
        Dim ts As TimeSpan = TargetDT.Subtract(DateTime.Now)
        If ts.TotalMilliseconds > 0 Then
            Me.lblTT_Timer.Text = getTimeString(ts)
        Else
            Me.lblTT_Timer.Text = getTimeString(ts)
            Timer1.Stop()
        End If
    End Sub

    Private Function getTimeString(ByVal ts As TimeSpan) As String
        Return (ts.Hours.ToString("00") + ":" + ts.Minutes.ToString("00") _
        + ":" + ts.Seconds.ToString("00"))
    End Function

Any ideas?

[passel]

It looks like you have two definitions for TargetDT, one on each form.
Why not make TargetDT on your frmTakeTest public, remove the one from where you restart the timer and change your code to reference the public one on your form.

        frmTakeTest.TargetDT = DateTime.Now.Add(CountDownFrom)
        frmTakeTest.Timer1.Start()

Or, if the RestartTimer reset code and the Public TargetDT definition are really in a Module, making it globally visible, then remove the local definition in the Form code so that it reference the one in the Module.