GetTickcount different in .NET (again)

[Ergo60]

OK lets try this again, the last post weny goofy.


I use GetTickCount for Timouts in some serial communication with instruments.

  start = GetTickCount
  Do
    If (GetTickCount - start > 2000) Then
      MsgBox ("Light Meter Response Timed Out, TestConnection")
      TestConnection = False
      mvarReady = False
      Exit Function
    End If
    InBuffer = InBuffer + objMeterComm.Input
  Loop Until (InStr(InBuffer, vbCr)) 

This gave a timeout of approx 2 seconds in VB6

I have to use the following code in .NET to get something anywhere close.

    start = GetTickCount
    Do
      If (GetTickCount - start > 20000000000) Then
        MsgBox("Light Meter Response Timed Out, TestConnection")
        TestConnection = False
        mvarReady = False
        Exit Function
      End If
      InBuffer = InBuffer + objMeterComm.Input
    Loop Until (InStr(InBuffer, vbCr)) 

Notice the very large number. Is this because .NET returns a larger variable type, and VB6 choped it off?

Any ideas?