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<title>XmlLayout Class</title>
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<td class="runninghead">log4net SDK Reference</td>
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<h1 class="dtH1">XmlLayout Class</h1>
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<p> Layout that formats the log events as XML elements. </p>
<p>For a list of all members of this type, see <a href="log4net.Layout.XmlLayoutMembers.html">XmlLayout 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 /><a href="log4net.Layout.LayoutSkeleton.html">log4net.Layout.LayoutSkeleton</a><br /><a href="log4net.Layout.XmlLayoutBase.html">log4net.Layout.XmlLayoutBase</a><br /><b>log4net.Layout.XmlLayout</b></p>
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<span class="lang">[VisualBasic]</span>
<br />PublicClassXmlLayout<div>Inherits<a href="log4net.Layout.XmlLayoutBase.html">XmlLayoutBase</a></div></div>
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<span class="lang">[C#]</span>
<div>publicclassXmlLayout<b> : <a href="log4net.Layout.XmlLayoutBase.html">XmlLayoutBase</a></b></div>
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<H4 class="dtH4">Thread Safety</H4>
<P>This type is <b>not</b> safe for multithreaded operations.</P>
<h4 class="dtH4">Remarks</h4>
<p> The output of the <b>XmlLayout</b> consists of a series of log4net:event elements. It does not output a complete well-formed XML file. The output is designed to be included as an <em>external entity</em> in a separate file to form a correct XML file. </p>
<p> For example, if <code>abc</code> is the name of the file where the <b>XmlLayout</b> output goes, then a well-formed XML file would be: </p>
<pre class="code"><span class="lang">[XML]
</span><?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>
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<p> This approach enforces the independence of the <b>XmlLayout</b> and the appender where it is embedded. </p>
<p> The <code>version</code> attribute helps components to correctly interpret output generated by <b>XmlLayout</b>. The value of this attribute should be "1.2" for release 1.2 and later. </p>
<p> Alternatively the <code>Header</code> and <code>Footer</code> properties can be configured to output the correct XML header, open tag and close tag. When setting the <code>Header</code> and <code>Footer</code> properties it is essential that the underlying data store not be appendable otherwise the data will become invalid XML. </p>
<h4 class="dtH4">Requirements</h4><p><b>Namespace: </b><a href="log4net.Layout.html">log4net.Layout</a></p><p><b>Assembly: </b>log4net (in log4net.dll)
</p><h4 class="dtH4">See Also</h4><p><a href="log4net.Layout.XmlLayoutMembers.html">XmlLayout Members</a> | <a href="log4net.Layout.html">log4net.Layout Namespace</a></p><hr /><div id="footer"><p><a href="http://logging.apache.org/log4net">Copyright 2001-2006 The Apache Software Foundation.</a></p><p>Generated from assembly log4net [1.2.10.0]</p></div></div>
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