public sealed class ThreadContext

public sealed class ThreadContext

Public NotInheritable Class ThreadContext

Public NotInheritable Class ThreadContext

public ref class ThreadContext sealed

public ref class ThreadContext sealed

The ThreadContext provides a location for thread specific debugging information to be stored. The ThreadContext properties override any GlobalContext properties with the same name.

The thread context has a properties map and a stack. The properties and stack can be included in the output of log messages. The PatternLayout supports selecting and outputting these properties.

The Thread Context provides a diagnostic context for the current thread. This is an instrument for distinguishing interleaved log output from different sources. Log output is typically interleaved when a server handles multiple clients near-simultaneously.

The Thread Context is managed on a per thread basis.

ThreadContext.Properties["user"] = userName;
log.Info("This log message has a ThreadContext Property called 'user'");

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

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