System.IO.Win32Marshal.MakeHRFromErrorCode C# (CSharp) Méthode

        internal static int MakeHRFromErrorCode(int errorCode)
        {
            Debug.Assert((0xFFFF0000 & errorCode) == 0, "This is an HRESULT, not an error code!");

            return unchecked(((int)0x80070000) | errorCode);
        }

        public override void MoveDirectory(string sourceFullPath, string destFullPath)
        {
            if (!Interop.Kernel32.MoveFile(sourceFullPath, destFullPath))
            {
                int errorCode = Marshal.GetLastWin32Error();

                if (errorCode == Interop.Errors.ERROR_FILE_NOT_FOUND)
                {
                    throw Win32Marshal.GetExceptionForWin32Error(Interop.Errors.ERROR_PATH_NOT_FOUND, sourceFullPath);
                }

                // This check was originally put in for Win9x (unfortunately without special casing it to be for Win9x only). We can't change the NT codepath now for backcomp reasons.
                if (errorCode == Interop.Errors.ERROR_ACCESS_DENIED) // WinNT throws IOException. This check is for Win9x. We can't change it for backcomp.
                {
                    throw new IOException(SR.Format(SR.UnauthorizedAccess_IODenied_Path, sourceFullPath), Win32Marshal.MakeHRFromErrorCode(errorCode));
                }

                throw Win32Marshal.GetExceptionForWin32Error(errorCode);
            }
        }