public string GenerateMessage(IResourceProvider resourceProvider)
{
    string pattern;
    switch (Reason)
    {
        case NotificationReason.SavingError:
            pattern = resourceProvider.GetResource("ID_NOTIFICATION_SAVING_ERROR");
            break;
        case NotificationReason.ConfigurationOutOfReach:
            pattern = resourceProvider.GetResource("ID_NOTIFICATION_CONFIGURATIONFROZEN");
            break;
        case NotificationReason.ConfigurationResumed:
            pattern = resourceProvider.GetResource("ID_NOTIFICATION_CONFIGURATIONRESUMED");
            break;
        case NotificationReason.DataSourceConnectionResumed:
            pattern = resourceProvider.GetResource("ID_NOTIFICATION_DATA_SOURCE_CONNECTION_RESUMED");
            break;
        case NotificationReason.DataSourceConnectionLost:
            pattern = resourceProvider.GetResource("ID_NOTIFICATION_DATA_SOURCE_CONNECTION_LOST");
            break;
        default:
            throw new NotSupportedException();
    }
    string notificationTimestamp;

    notificationTimestamp = NotificationTimeStamp.ToString(Interfaces.Utility.AuditTrailDateTimeFormat);

    pattern = Regex.Replace(pattern, Regex.Escape(configName), ConfigName, RegexOptions.IgnoreCase);
    pattern = Regex.Replace(pattern, Regex.Escape(timestamp), notificationTimestamp, RegexOptions.IgnoreCase);
    return pattern;
}