/// <summary>
/// Creates a LoggingMgr instance using the configuration values referred to by the given config key
/// into the LoggingConfigurations section of the app.config file
/// </summary>
/// <param name="loggingConfigKey">Key into LoggingConfigurations section to obtain settings</param>
public LoggingMgr(string loggingConfigKey)
{
_loggingKey = loggingConfigKey;
_configuredOptions.AppendFormat("LogKey: {0}{1}", loggingConfigKey, Environment.NewLine);
LoggingConfiguration loggingConfigSection
= AppConfigMgr.GetSection <LoggingConfiguration>(LoggingConfiguration.ConfigSectionName);
LoggingElement loggingConfig = loggingConfigSection.GetLoggingConfig(loggingConfigKey);
_backupFileLog = new FileLog(loggingConfig.BackupLogFileName
, loggingConfig.BackupLogFileDirectory
, enumEventPriority.All);
_configuredTraceLevel = GetTraceLevelFromString(loggingConfig.TraceLevel);
_configuredOptions.AppendFormat("BackupLogFile: {0}{1}", loggingConfig.BackupLogFileName, Environment.NewLine);
_configuredOptions.AppendFormat("BackupLogFileDir: {0}{1}", loggingConfig.BackupLogFileDirectory, Environment.NewLine);
InitLoggingTargets(
BuildLoggingTargetsFromConfig(_backupFileLog, loggingConfig));
}