Serial Communication with Silverlight 5 (COM port)

Question

I\'m working on an ASP.NET website in which I\'ll need to access an usb device from the client side.

I\'ve seen that Silverlight 5, through the use of P/Invoke, allo

Answer 1

This helped me out A LOT ...

Still, I lost quite a lot of time figuring out that you have to pass "COM10" as "\\.\COM10"

Otherwise PInvoke of CreateFile keeps returning -1 (port not found)

MS states: http://msdn.microsoft.com/en-us/library/windows/desktop/aa363858(v=vs.85).aspx

"To specify a COM port number greater than 9, use the following syntax: "\.\COM10". This syntax works for all port numbers and hardware that allows COM port numbers to be specified."

Yes, I realise most machines don't have 10 COM ports, but when you use Com0Com (great tool to simulate serial Null-modem, you end up with these hight port numbers ...)

Figured I'd post this info, maybe it'll save someone some time ....

All the best, Stijn, Belgium