Can't find PInvoke DLL error in Windows Mobile
I am having a lot of trouble getting a basic scenario to work on windows mobile 5.0 emulator. I have a winforms app that eventually calls into native code. Deployment works fine and all the native DLLs are copied in the same folder as the winforms .exe. I also verified this is the case with Remote File Viewer tool.
However when I launch my app, it always fails with "Can't find PInvoke dll -- System.MissingMethodException" error (when the time comes to call into native code, the DllImport attribute is rendered useless). I know that the native dll is found in the same folder as the executable. What more should I do?
I am using VS 2008.
Answer
To extend Jared's answer, four more common reasons to get a MissingMethodException while P/Invoking in the CF:
- You are missing dependencies of the native library you are calling into.
- The native assmebly was compiled for the wrong subsystem (i.e. desktop, not CE)
- The native assembly was compiled for the wrong processor (i.e. x86 and not ARM)
- You don't have enough virtual memory for the DLL to load.
Have you verified the DLL entry points are undecorated with something like dumpbin?