[C#]파일 Random Access 빠르게 읽기 (readbyte,read)
[DllImport("Kernel32.dll", SetLastError = true, CharSet = CharSet.Auto)] private static extern bool DeviceIoControl( SafeFileHandle hDevice, int dwIoControlCode, IntPtr InBuffer, int nInBufferSize, IntPtr OutBuffer, int nOutBufferSize, ref int pBytesReturned, [In] ref NativeOverlapped lpOverlapped ); static void MarkAsSparseFile(SafeFileHandle fileHandle) { int bytesReturned = 0; NativeOverlappe..