null
+ If the object is null then an null
+ If the object is null then an null
+ If the object is null then an null
+ If the object is not null then an null
+ If the object is not null then an null
+ If the object is not null null then an NaN value.
+ If the object is not NaN then an NaN value.
+ If the object is not NaN then an NaN value.
+ If the object is not NaN then an
+ CREATE TABLE [dbo].[Log] (
+ [ID] [int] IDENTITY (1, 1) NOT NULL ,
+ [Date] [datetime] NOT NULL ,
+ [Thread] [varchar] (255) NOT NULL ,
+ [Level] [varchar] (20) NOT NULL ,
+ [Logger] [varchar] (255) NOT NULL ,
+ [Message] [varchar] (4000) NOT NULL
+ ) ON [PRIMARY]
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ "DSN=MS Access Database;UID=admin;PWD=;SystemDB=C:\data\System.mdw;SafeTransactions = 0;FIL=MS Access;DriverID = 25;DBQ=C:\data\train33.mdb"
+ "Driver={Microsoft Access Driver (*.mdb)};DBQ=C:\Work\cvs_root\log4net-1.2\access.mdb;UID=;PWD=;"
+ "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Work\cvs_root\log4net-1.2\access.mdb;User Id=;Password=;"
+ System.Data.OleDb.OleDbConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
+ System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
+ Microsoft.Data.Odbc.OdbcConnection,Microsoft.Data.Odbc,version=1.0.3300.0,publicKeyToken=b77a5c561934e089,culture=neutral
+ This is an optional package that you can download from
+ http://msdn.microsoft.com/downloads
+ search for ODBC .NET Data Provider.
+ System.Data.OracleClient.OracleConnection, System.Data.OracleClient, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089
+ This is an optional package that you can download from
+ http://msdn.microsoft.com/downloads
+ search for .NET Managed Provider for Oracle.
+
+
+
+
+
+
+
+
+
+
+
+
+
+ <mapping>
+ <level value="ERROR" />
+ <eventLogEntryType value="Error" />
+ </mapping>
+ <mapping>
+ <level value="DEBUG" />
+ <eventLogEntryType value="Information" />
+ </mapping>
+
+
+
+
+
+
+ IPEndPoint remoteEndPoint = new IPEndPoint(IPAddress.Any, 0);
+ UdpClient udpClient;
+ byte[] buffer;
+ string loggingEvent;
+
+ try
+ {
+ udpClient = new UdpClient(8080);
+
+ while(true)
+ {
+ buffer = udpClient.Receive(ref remoteEndPoint);
+ loggingEvent = System.Text.Encoding.Unicode.GetString(buffer);
+ Console.WriteLine(loggingEvent);
+ }
+ }
+ catch(Exception e)
+ {
+ Console.WriteLine(e.ToString());
+ }
+
+
+ Dim remoteEndPoint as IPEndPoint
+ Dim udpClient as UdpClient
+ Dim buffer as Byte()
+ Dim loggingEvent as String
+
+ Try
+ remoteEndPoint = new IPEndPoint(IPAddress.Any, 0)
+ udpClient = new UdpClient(8080)
+
+ While True
+ buffer = udpClient.Receive(ByRef remoteEndPoint)
+ loggingEvent = System.Text.Encoding.Unicode.GetString(buffer)
+ Console.WriteLine(loggingEvent)
+ Wend
+ Catch e As Exception
+ Console.WriteLine(e.ToString())
+ End Try
+
+
+
+
+
+
+ using log4net.Config;
+ using System.IO;
+ using System.Configuration;
+
+ ...
+
+ DOMConfigurator.Configure(new FileInfo(ConfigurationSettings.AppSettings["log4net-config-file"]));
+
+
+
+
+
+
+
+
+ using log4net.Config;
+ using System.IO;
+ using System.Configuration;
+
+ ...
+
+ DOMConfigurator.Configure(new FileInfo(ConfigurationSettings.AppSettings["log4net-config-file"]));
+
+
+
+
+
+
+
+
+
+
+
+
+
+ log4net configuration XML goes here
+
+
+
+
+
+
+
+
+
+ using log4net.Config;
+ using System.IO;
+ using System.Configuration;
+
+ ...
+
+ XmlConfigurator.Configure(new FileInfo(ConfigurationSettings.AppSettings["log4net-config-file"]));
+
+
+
+
+
+
+
+
+
+
+
+
+
+ using log4net.Config;
+ using System.IO;
+ using System.Configuration;
+
+ ...
+
+ XmlConfigurator.Configure(new FileInfo(ConfigurationSettings.AppSettings["log4net-config-file"]));
+
+
+
+
+
+
+
+
+ ILog log = LogManager.GetLogger("application-log");
+
+ log.Info("Application Start");
+ log.Debug("This is a debug message");
+
+ if (log.IsDebugEnabled)
+ {
+ log.Debug("This is another debug message");
+ }
+
+
+ log.Debug("This is entry number: " + i );
+
+
+ if (log.IsDebugEnabled)
+ {
+ log.Debug("This is entry number: " + i );
+ }
+
+
+ private static readonly bool isDebugEnabled = log.IsDebugEnabled;
+
+
+ if (isDebugEnabled)
+ {
+ log.Debug("This is entry number: " + i );
+ }
+
+
+ log.Debug("This is entry number: " + i );
+
+
+ if (log.IsDebugEnabled())
+ {
+ log.Debug("This is entry number: " + i );
+ }
+
+
+ {key1=value1, key2=value2, key3=value3}
+
+
+ StringWriter writer = new StringWriter();
+ Layout.Format(writer, loggingEvent);
+ string formattedEvent = writer.ToString();
+
+
+ ILog log = LogManager.GetLogger(typeof(TestApp));
+ log.Debug("Message 1");
+ log.Warn("Message 2");
+
+
+ DEBUG [main]: Message 1
+ WARN [main]: Message 2
+
+ | Format modifier | +left justify | +minimum width | +maximum width | +comment | +
|---|---|---|---|---|
| %20logger | +false | +20 | +none | +
+ |
+
| %-20logger | +true | +20 | +none | +
+ |
+
| %.30logger | +NA | +none | +30 | +
+ |
+
| false | +20 | +30 | +
+ |
+ |
| %-20.30logger | +true | +20 | +30 | +
+ |
+
%timestamp [%thread] %level %logger %ndc - %message%newline
+ %-6timestamp [%15.15thread] %-5level %30.30logger %ndc - %message%newline
+
+ DEBUG - Hello world
+
+
+ <?xml version="1.0" ?>
+
+ <!DOCTYPE log4net:events SYSTEM "log4net-events.dtd" [<!ENTITY data SYSTEM "abc">]>
+
+ <log4net:events version="1.2" xmlns:log4net="http://logging.apache.org/log4net/schemas/log4net-events-1.2>
+ &data;
+ </log4net:events>
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ string s = OptionConverter.SubstituteVariables("Value of key is ${key}.");
+
+
+ string s = OptionConverter.SubstituteVariables("Value of nonExistentKey is [${nonExistentKey}]");
+
+
+ using(log4net.ThreadContext.Stacks["NDC"].Push("Stack_Message"))
+ {
+ log.Warn("This should have an ThreadContext Stack message");
+ }
+
+
+ GlobalContext.Properties["hostname"] = Environment.MachineName;
+
+
+ LogicalThreadContext.Properties["user"] = userName;
+ log.Info("This log message has a LogicalThreadContext Property called 'user'");
+
+
+ using(LogicalThreadContext.Stacks["LDC"].Push("my context message"))
+ {
+ log.Info("This log message has a LogicalThreadContext Stack message that includes 'my context message'");
+
+ } // at the end of the using block the message is automatically popped
+
+
+ ILog log = LogManager.GetLogger("application-log");
+
+ log.Info("Application Start");
+ log.Debug("This is a debug message");
+
+ if (log.IsDebugEnabled)
+ {
+ log.Debug("This is another debug message");
+ }
+
+
+ using(NDC.Push("my context message"))
+ {
+ ... all log calls will have 'my context message' included ...
+
+ } // at the end of the using block the message is automatically removed
+
+
+ using(log4net.NDC.Push("NDC_Message"))
+ {
+ log.Warn("This should have an NDC message");
+ }
+
+
+ ThreadContext.Properties["user"] = userName;
+ log.Info("This log message has a ThreadContext Property called 'user'");
+
+
+ using(ThreadContext.Stacks["NDC"].Push("my context message"))
+ {
+ log.Info("This log message has a ThreadContext Stack message that includes 'my context message'");
+
+ } // at the end of the using block the message is automatically popped
+
+