[DllImport("kernel32")] WritePrivateProfileString

int Internal; int InternalHigh; int Offset; int OffSetHigh; int hEvent; } [System.Runtime.InteropServices.DllImport("kernel32.dll")] private static extern int CreateFile(string lpFileName, uint dwDesiredAccess, int dwShareMode, int lpSecurityAttributes, int dwCreationDisposition, int dwFlagsAndAttributes, int hTemplateFile); [System.Runtime.InteropServices.DllImport("kernel32.dll")] private static extern bool WriteFile(int hFile, byte[] lpBuffer, int nNumberOfBytesToWrite, out int lpNumberOfBytesWritten, out OVERLAPPED lpOverlapped); [System.Runtime.InteropServices.DllImport("kernel32.dll")] private static extern bool CloseHandle(int hObject); private int iHandle; public bool Open() { iHandle = CreateFile("LPT1:", (uint)FileAccess.ReadWrite, 0, 0, (int)FileMode.Open, 0, 0); if (iHandle != -1) { return true; } else { return false; }