QueryPerformanceFrequency

C# Signature:

[DllImport("kernel32.dll", SetLastError=true)]
static extern bool QueryPerformanceFrequency(out long frequency);

VB Signature:

<DllImport("kernel32.dll", SetLastError:=True)> _
Shared Function QueryPerformanceFrequency(ByRef lpFrequency As Long) As Boolean
End Function