/// <summary>
/// Writes the message to the log file or the event log based on the instance's configuration
/// </summary>
/// <param name="Msg">A string suitable for string.Format</param>
/// <param name="MsgLevel">Message type</param>
/// <param name="Args">A params list suitable for string.Format (or null)</param>
public void Message(string Msg, LogLevel MsgLevel, params object[] Args)
{
try
{
string FormattedMsg = ParseMsg(Msg, Args);
// Windows event log
if (LoggingEnabled && LoggingOutput == LogOutput.ToEventLog && LoggingLevel.CompareTo(MsgLevel) >= 0 && LoggingAppName != null)
{
if (!EventLog.SourceExists(LoggingAppName))
{
// If our application is not registered as a source with the event logging
// subsystem then go ahead and register it
EventLog.CreateEventSource(LoggingAppName, "Application");
}
EventLog.WriteEntry(LoggingAppName, FormattedMsg, XlatToWin(MsgLevel));
}
// Text file log
else if (LoggingEnabled && LoggingOutput == LogOutput.ToFile && LoggingLogFile != null && LoggingLevel.CompareTo(MsgLevel) >= 0)
{
using (StreamWriter sw = new StreamWriter(LoggingLogFile, true)) // true means append
{
sw.WriteLine(string.Format("{0} -- {1,-4} -- {2}", DateTime.Now, XlatToStr(MsgLevel), FormattedMsg));
}
}
// SQL log
else if (LoggingEnabled && LoggingOutput == LogOutput.ToDatabase && LoggingLevel.CompareTo(MsgLevel) >= 0)
{
LogToSQL(XlatToStr(MsgLevel), FormattedMsg);
}
// Console log
else if (LoggingEnabled && LoggingOutput == LogOutput.ToConsole && LoggingLevel.CompareTo(MsgLevel) >= 0)
{
Console.WriteLine(FormattedMsg);
}
}
catch (Exception Ex)
{
if (LoggingOutput == LogOutput.ToDatabase) // If we get an error trying to log to the database, switch to text file logging
{
if (LoggingLogFile != null)
{
LoggingOutput = LogOutput.ToFile;
try
{
using (StreamWriter sw = new StreamWriter(LoggingLogFile, true)) // true means append
{
sw.WriteLine(string.Format("{0} -- {1,-4} -- {2}", DateTime.Now, "ERR", string.Format("An error occurred attempting to log to the database. The error was: {0}. Switching over to text file logging. Stack trace follows: {1}", Ex.Message, Ex.StackTrace)));
}
}
catch { } // no meaningful action
}
else // ok no text log - use event log
{
LoggingOutput = LogOutput.ToEventLog;
try
{
if (!EventLog.SourceExists(LoggingAppName))
{
// If our application is not registered as a source with the event logging
// subsystem then go ahead and register it
EventLog.CreateEventSource(LoggingAppName, "Application");
}
EventLog.WriteEntry(LoggingAppName, string.Format("An error occurred attempting to log to the database. The error was: {0}. Switching over to Windows Event Log logging. Stack trace follows: {1}", Ex.Message, Ex.StackTrace), EventLogEntryType.Error);
}
catch { } // no meaningful action
}
}
}
}
public bool IsEnabled(LogLevel logLevel)
{
int comparison = logLevel.CompareTo(MigratorLogging.configMinimumLogLevel);
return(comparison >= 0);
}