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<h1 class="dtH1">NDC Class</h1>
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<p> Implementation of Nested Diagnostic Contexts. </p>
<p>For a list of all members of this type, see <a href="log4net.NDCMembers.html">NDC Members</a>.</p>
<p>
<a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemObjectClassTopic.asp">System.Object</a>
<br /><b>log4net.NDC</b></p>
<div class="syntax">
<span class="lang">[VisualBasic]</span>
<br />NotInheritablePublicClassNDC</div>
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<span class="lang">[C#]</span>
<div>publicsealedclassNDC</div>
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<H4 class="dtH4">Thread Safety</H4>
<P>This type is safe for multithreaded operations.</P>
<h4 class="dtH4">Remarks</h4>
<p>
<blockquote class="dtBlock"><b>Note</b>
<p> The NDC is deprecated and has been replaced by the <a href="log4net.ThreadContext.Stacks.html">Stacks</a>. The current NDC implementation forwards to the <code>ThreadContext.Stacks["NDC"]</code>. </p>
</blockquote>
<p> A Nested Diagnostic Context, or NDC in short, is an instrument to distinguish interleaved log output from different sources. Log output is typically interleaved when a server handles multiple clients near-simultaneously. </p>
<p> Interleaved log output can still be meaningful if each log entry from different contexts had a distinctive stamp. This is where NDCs come into play. </p>
<p> Note that NDCs are managed on a per thread basis. The NDC class is made up of static methods that operate on the context of the calling thread. </p>
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<h4 class="dtH4">Example</h4>
<p>How to push a message into the context <pre class="code"><span class="lang">[C#]
</span>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
</pre>
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<h4 class="dtH4">Requirements</h4>
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<b>Namespace: </b>
<a href="log4net.html">log4net</a>
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<b>Assembly: </b>log4net (in log4net.dll)
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<h4 class="dtH4">See Also</h4>
<p>
<a href="log4net.NDCMembers.html">NDC Members</a> | <a href="log4net.html">log4net Namespace</a></p>
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<a href="http://logging.apache.org/log4net">Copyright 2001-2006 The Apache Software Foundation.</a>
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