private void Cancel() { // Storing to locals to avoid data ----s SafeHandle handle = this._handle; NativeOverlapped *overlapped = this._overlapped; if (handle != null && !handle.IsInvalid && overlapped != null) { if (!UnsafeNativeMethods.CancelIoEx(handle, overlapped)) { // This case should not have any consequences although // it will be easier to debug if there exists any special case // we are not aware of. int errorCode = Marshal.GetLastWin32Error(); Debug.WriteLine("CancelIoEx finished with error code {0}.", errorCode); } SetOperationCompleted(); } }
internal static void WinIOError(int errorCode, String maybeFullPath) { // This doesn't have to be perfect, but is a perf optimization. bool isInvalidPath = errorCode == UnsafeNativeMethods.ERROR_INVALID_NAME || errorCode == UnsafeNativeMethods.ERROR_BAD_PATHNAME; String str = GetDisplayablePath(maybeFullPath, isInvalidPath); switch (errorCode) { case UnsafeNativeMethods.ERROR_FILE_NOT_FOUND: if (str.Length == 0) { throw new FileNotFoundException(SR.GetString(SR.IO_FileNotFound)); } else { throw new FileNotFoundException(String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.IO_FileNotFound_FileName), str), str); } case UnsafeNativeMethods.ERROR_PATH_NOT_FOUND: if (str.Length == 0) { throw new DirectoryNotFoundException(SR.GetString(SR.IO_PathNotFound_NoPathName)); } else { throw new DirectoryNotFoundException(String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.IO_PathNotFound_Path), str)); } case UnsafeNativeMethods.ERROR_ACCESS_DENIED: if (str.Length == 0) { throw new UnauthorizedAccessException(SR.GetString(SR.UnauthorizedAccess_IODenied_NoPathName)); } else { throw new UnauthorizedAccessException(String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.UnauthorizedAccess_IODenied_Path), str)); } case UnsafeNativeMethods.ERROR_ALREADY_EXISTS: if (str.Length == 0) { goto default; } throw new IOException(SR.GetString(SR.IO_IO_AlreadyExists_Name, str), UnsafeNativeMethods.MakeHRFromErrorCode(errorCode)); case UnsafeNativeMethods.ERROR_FILENAME_EXCED_RANGE: throw new PathTooLongException(SR.GetString(SR.IO_PathTooLong)); case UnsafeNativeMethods.ERROR_INVALID_DRIVE: throw new DriveNotFoundException(String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.IO_DriveNotFound_Drive), str)); case UnsafeNativeMethods.ERROR_INVALID_PARAMETER: throw new IOException(UnsafeNativeMethods.GetMessage(errorCode), UnsafeNativeMethods.MakeHRFromErrorCode(errorCode)); case UnsafeNativeMethods.ERROR_SHARING_VIOLATION: if (str.Length == 0) { throw new IOException(SR.GetString(SR.IO_IO_SharingViolation_NoFileName), UnsafeNativeMethods.MakeHRFromErrorCode(errorCode)); } else { throw new IOException(SR.GetString(SR.IO_IO_SharingViolation_File, str), UnsafeNativeMethods.MakeHRFromErrorCode(errorCode)); } case UnsafeNativeMethods.ERROR_FILE_EXISTS: if (str.Length == 0) { goto default; } throw new IOException(String.Format(CultureInfo.CurrentCulture, SR.GetString(SR.IO_IO_FileExists_Name), str), UnsafeNativeMethods.MakeHRFromErrorCode(errorCode)); case UnsafeNativeMethods.ERROR_OPERATION_ABORTED: throw new OperationCanceledException(); default: throw new IOException(UnsafeNativeMethods.GetMessage(errorCode), UnsafeNativeMethods.MakeHRFromErrorCode(errorCode)); } }