We are developing an windows 8 store device app using C# which will communicate to the device using Win32 API and IOCTL calls in a C dll. We had created a C dll with Create File and some IOCTL calls, imported in C# application. Integration goes well and when Create File function is called, it returns 'ACCESS DENIED ERROR'. We had also tried creating Manifest with requested Execution level to Administrator but still the issue is not solved. I would like to know whether Win32 API & IOCTL calls can be used directly or do I need to use any wrapper calls to make it work?
Thanks in advance.