public sealed class LogicalThreadContext

public sealed class LogicalThreadContext

Public NotInheritable Class LogicalThreadContext

Public NotInheritable Class LogicalThreadContext

public ref class LogicalThreadContext sealed

public ref class LogicalThreadContext sealed

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

The Logical 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 Logical Thread Context provides a diagnostic context for the current call context. 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 Logical Thread Context is managed on a per CallContext basis.

The CallContext requires a link time SecurityPermission for the Infrastructure. If the calling code does not have this permission then this context will be disabled. It will not store any property values set on it.

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

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

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