Created Unassigned: DirectSoundOut.Devices.Count() [16497]

Here is the code

Dim dscount As Integer = 0
dscount = DirectSoundOut.Devices.Count()

dscount value is 8. the correct value is 4.
if i see in watch window and evaluate expression " DirectSoundOut.Devices.Count() " then it gives integer and value 4.

What is wrong?