public static string ApplicationSetting(string key, string DefaultValue)
		{
			try
			{
				return (ConfigurationManager.AppSettings[key] != null)
				? ConfigurationManager.AppSettings[key]
				: DefaultValue;
			}
			catch (Exception e)
			{
				if (log.IsWarnEnabled)
					log.Warn(e.ToString());
				return DefaultValue;
			}
		}