On 6/3/08, Ruben J=F6nsson <ruben@pp.sbbs.se> wrote:
> The problem is in WinUsbDevice.CloseDeviceHandle():
>
> if (!(myDevInfo.deviceHandle.IsInvalid)){
>
> since myDevInfo.deviceHandle is null. You can fix this by testing the
> deviceHandle for null.
>
Thanks.

>
> The real problem is that the try/catch is rethrown without handling it wh=
ich is
> the same as not having any try/catch at all. Remove the throw and it will=
 also
> work. I am not sure why you would rethrow without doing anything with the
> exception instead of not catching it at all.

I also feel it is strange but I do not know how to fix it.

This is not my progrgam. It is written by the famous Jan Axelson, the
author of the famous "USB Complete" and other books.

Xiaofan

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