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<title>IsDebugEnabled Property</title>
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<h1 class="dtH1">LogImpl.IsDebugEnabled Property</h1>
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<p> Checks if this logger is enabled for the <code>DEBUG</code> level. </p>
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<span class="lang">[VisualBasic]</span>
<br />OverridablePublicReadOnlyPropertyIsDebugEnabledAs<a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemBooleanClassTopic.asp">Boolean</a>_<div>Implements<a href="log4net.ILog.IsDebugEnabled.html">ILog.IsDebugEnabled</a></div></div>
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<span class="lang">[C#]</span>
<br />publicvirtual<a href="http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/frlrfSystemBooleanClassTopic.asp">bool</a>IsDebugEnabled{get;}</div>
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<h4 class="dtH4">Property Value</h4>
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<code>true</code> if this logger is enabled for <code>DEBUG</code> events, <code>false</code> otherwise. </p>
<h4 class="dtH4">Implements</h4>
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<a href="log4net.ILog.IsDebugEnabled.html">ILog.IsDebugEnabled</a>
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<h4 class="dtH4">Remarks</h4>
<p> This function is intended to lessen the computational cost of disabled log debug statements. </p>
<p> For some <code>log</code> Logger object, when you write: </p>
<pre class="code"><span class="lang">[C#]
</span>log.Debug("This is entry number: " + i );
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<p> You incur the cost constructing the message, concatenation in this case, regardless of whether the message is logged or not. </p>
<p> If you are worried about speed, then you should write: </p>
<pre class="code"><span class="lang">[C#]
</span>if (log.IsDebugEnabled())
{
log.Debug("This is entry number: " + i );
}
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<p> This way you will not incur the cost of parameter construction if debugging is disabled for <code>log</code>. On the other hand, if the <code>log</code> is debug enabled, you will incur the cost of evaluating whether the logger is debug enabled twice. Once in <code>IsDebugEnabled</code> and once in the <code>Debug</code>. This is an insignificant overhead since evaluating a logger takes about 1% of the time it takes to actually log. </p>
<h4 class="dtH4">See Also</h4><p><a href="log4net.Core.LogImpl.html">LogImpl Class</a> | <a href="log4net.Core.html">log4net.Core 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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