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| <td class="runninghead">Apache log4net� SDK Documentation - Microsoft .NET Framework 4.0</td> |
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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">[Visual�Basic]</span> |
| <br />Overridable�Public�ReadOnly�Property�IsDebugEnabled�As�<a href="ms-help://MS.NETFrameworkSDKv1.1/cpref/html/frlrfSystemBooleanClassTopic.htm">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 />public�virtual�<a href="ms-help://MS.NETFrameworkSDKv1.1/cpref/html/frlrfSystemBooleanClassTopic.htm">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()) |
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| 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><object type="application/x-oleobject" classid="clsid:1e2a7bd0-dab9-11d0-b93a-00c04fc99f9e" viewastext="true" style="display: none;"><param name="Keyword" value="IsDebugEnabled property"></param><param name="Keyword" value="IsDebugEnabled property, LogImpl class"></param><param name="Keyword" value="LogImpl.IsDebugEnabled property"></param></object><hr /><div id="footer"><a href='http://logging.apache.org/log4net/'>Copyright 2004-2011 The Apache Software Foundation.</a><br></br>Apache log4net, Apache and log4net are trademarks of The Apache Software Foundation.</div></div> |
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