Пример #1
0
        /// <summary>
        /// Throws the correct Site Destination exception for a given WinInet Error Code.
        /// This attempts to map common WinInet errors to corresponding Destination errors.
        /// </summary>
        /// <param name="error">The WinInet error code</param>
        private void ThrowDestinationException(int error)
        {
            // Exception detail data
            string exceptionType = null;

            string extendedMessage = WinInet.GetExtendedInfo();

            if (extendedMessage == null || extendedMessage == String.Empty)
            {
                extendedMessage = "The source of the error is unknown.";
            }

            SiteDestinationException exception = null;

            // This wraps the lower level WinInet errors into higher level
            // Site destination exceptions.  It also gathers extended info from
            // the connection to assist with troubleshooting.
            switch (error)
            {
            case ERROR_INTERNET.CANNOT_CONNECT:
                exceptionType = SiteDestinationException.ConnectionException;
                break;

            case ERROR_INTERNET.NAME_NOT_RESOLVED:
                exceptionType = SiteDestinationException.ConnectionException;
                break;

            case ERROR_INTERNET.ITEM_NOT_FOUND:
                exceptionType = SiteDestinationException.TransferException;
                break;

            case ERROR_INTERNET.TIMEOUT:
                exceptionType = SiteDestinationException.TransferException;
                break;

            case ERROR_INTERNET.LOGIN_FAILURE:
                exception = new LoginException(null, error);
                break;

            case ERROR_INTERNET.INCORRECT_PASSWORD:
                exception = new LoginException(null, error);
                break;

            case ERROR_INTERNET.INCORRECT_USER_NAME:
                exception = new LoginException(null, error);
                break;

            case ERROR_INTERNET.EXTENDED_ERROR:
                exceptionType = SiteDestinationException.UnexpectedException;
                break;

            default:
                exceptionType = SiteDestinationException.UnexpectedException;
                break;
            }

            // Set up a sitedestination exception with the correct information
            if (exception == null)
            {
                exception = new SiteDestinationException(
                    null,
                    exceptionType,
                    GetType().Name,
                    error);
            }
            exception.DestinationErrorCode       = error;
            exception.DestinationType            = GetType().Name;
            exception.DestinationExtendedMessage = extendedMessage;

            // throw it
            throw exception;
        }