Two options: There is the intermediate GPS driver, which has a howto article for .Net on MSDN. You could connect to the serial port (configurable...

Chris Craft had a lot of source code for this sort of thing in his Series 30 Days of .NET Windows Mobile Applications. Week 1 - Including GPS Comp...

If you are planning to develop in the .NET Compact Framework, there is a quite extensive GPS example in the Windows Mobile Developer Samples. That...

Try to have a look at some of the solutions on CodeProject.com. There are a lot of very good articles about Windows Mobile and GPS.

And for testing code that uses the intermediate driver (see other answers), don't forget the FakeGPS utility from the SDK that you can use to pipe...

From my point of view it is much easier to read serial port (in my case COM5, baudrate 4800) and parse received data. (how to parse the string can...