Name
Trace
Synopsis
This class supplies static methods and properties to
provide tracing ability. The calls to the Trace
methods and properties are only
executed if tracing is enabled. (See the introduction to this
chapter for instructions on enabling tracing.)
The static properties allow you to adjust the settings that are
used when you call the methods. You can specify that output be
indented a certain amount with IndentLevel or
increase or decrease the IndentLevel by one using
Indent() and Unindent(). You
can also adjust the number of spaces each indent level adds using
IndentSize. AutoFlush makes
sure that after each use of a Trace method, the
Listeners are flushed.
Write() and WriteLine()
simply write to each TraceListener in the
Listeners collection (by default, this
collection includes an instance of
DefaultTraceListener).
WriteIf() and WriteLineIf()
do the same, but only if the specified condition evaluates to
true. Assert() emits an
error message if a condition evaluates to false,
and Fail() always emits an error message.
One possible point of confusion is that
Listeners is read-only. This means that you may
not point Listeners to a different collection.
You can, however, add new TraceListener objects
to the TraceListenerCollection with the
TraceListenerCollection.Add() method.
You can use the application configuration file to configure this
class. Under the <system.diagnostics> element,
add a <trace> element. You can set attributes for this element that correspond to ...