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            Writes events to the system event log.
            </div><div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">Inheritance Hierarchy</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"></div><img src="./../icons/online_icon.gif" class="OH_offlineIcon" alt="Online" title="Online" /><a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">System<span id="ID0EBHNAAAAA"> </span><script type="text/javascript">
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				</script>Object</a><br />  <a href="T_log4net_Appender_AppenderSkeleton.htm" target="">log4net.Appender<span id="ID0EBENAAAAA"> </span><script type="text/javascript">
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				</script>AppenderSkeleton</a><br />    <span class="selflink">log4net.Appender<span id="ID0EBBNAAAAA"> </span><script type="text/javascript">
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				</script>EventLogAppender</span><br /><p></p><b>Namespace:</b> <a href="N_log4net_Appender.htm" target="">log4net.Appender</a><br /><b>Assembly:</b> <span sdata="assembly">log4net</span> (in log4net.dll) Version: 1.2.14.0 (1.2.14.0)<div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">Syntax</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"></div><div id="snippetGroup_Syntax" class="code"><div id="ID0ECADAAAAA" class="OH_CodeSnippetContainer"><div class="OH_CodeSnippetContainerTabs" id="ID0ECADAAAAA_tabs"><div class="OH_CodeSnippetContainerTabLeftActive" id="ID0ECADAAAAA_tabimgleft"></div><div id="ID0ECADAAAAA_tab1" class="OH_CodeSnippetContainerTabActive" EnableCopyCode="true"><a href="#" onclick="javascript:ChangeTab('ID0ECADAAAAA','C#','1','4');return false;">C#</a></div><div id="ID0ECADAAAAA_tab2" class="OH_CodeSnippetContainerTab" EnableCopyCode="true"><a href="#" onclick="javascript:ChangeTab('ID0ECADAAAAA','Visual Basic','2','4');return false;">VB</a></div><div id="ID0ECADAAAAA_tab3" class="OH_CodeSnippetContainerTab" EnableCopyCode="true"><a href="#" onclick="javascript:ChangeTab('ID0ECADAAAAA','Visual C++','3','4');return false;">C++</a></div><div id="ID0ECADAAAAA_tab4" class="OH_CodeSnippetContainerTabDisabledNotFirst" EnableCopyCode="true" disabled="true"><a>F#</a></div><div class="OH_CodeSnippetContainerTabRight" id="ID0ECADAAAAA_tabimgright"></div></div><div id="ID0ECADAAAAA_codecollection" class="OH_CodeSnippetContainerCodeCollection"><div class="OH_CodeSnippetToolBar"><div class="OH_CodeSnippetToolBarText"><a id="ID0ECADAAAAA_ViewColorized" href="#" onclick="javascript:ExchangeTitleContent('ID0ECADAAAAA','4')" title="View Colorized" style="display: none">View Colorized</a><a id="ID0ECADAAAAA_copycode" href="#" onclick="javascript:CopyToClipboard('ID0ECADAAAAA','4')" title="Copy to Clipboard">Copy to Clipboard</a><a id="ID0ECADAAAAA_PrintText" class="OH_PrintText" href="#" onclick="javascript:Print('ID0ECADAAAAA','4')" title="Print">Print</a></div></div><div id="ID0ECADAAAAA_code_Div1" class="OH_CodeSnippetContainerCode" style="display: block"><pre><span class="keyword">public</span> <span class="keyword">class</span> <span class="identifier">EventLogAppender</span> : <span class="identifier">AppenderSkeleton</span></pre></div><div id="ID0ECADAAAAA_code_Plain_Div1" class="OH_CodeSnippetContainerCode" style="display: none"><pre>public class EventLogAppender : AppenderSkeleton</pre></div><div id="ID0ECADAAAAA_code_Div2" class="OH_CodeSnippetContainerCode" style="display: none"><pre><span class="keyword">Public</span> <span class="keyword">Class</span> <span class="identifier">EventLogAppender</span> 
	<span class="keyword">Inherits</span> <span class="identifier">AppenderSkeleton</span></pre></div><div id="ID0ECADAAAAA_code_Plain_Div2" class="OH_CodeSnippetContainerCode" style="display: none"><pre>Public Class EventLogAppender 
	Inherits AppenderSkeleton</pre></div><div id="ID0ECADAAAAA_code_Div3" class="OH_CodeSnippetContainerCode" style="display: none"><pre><span class="keyword">public</span> <span class="keyword">ref class</span> <span class="identifier">EventLogAppender</span> : <span class="keyword">public</span> <span class="identifier">AppenderSkeleton</span></pre></div><div id="ID0ECADAAAAA_code_Plain_Div3" class="OH_CodeSnippetContainerCode" style="display: none"><pre>public ref class EventLogAppender : public AppenderSkeleton</pre></div><div id="ID0ECADAAAAA_code_Div4" class="OH_CodeSnippetContainerCode" style="display: none"><pre /></div><div id="ID0ECADAAAAA_code_Plain_Div4" class="OH_CodeSnippetContainerCode" style="display: none"><pre /></div></div></div><script>addSpecificTextLanguageTagSet('ID0ECADAAAAA');</script></div><div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">Remarks</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"></div><p>
            The appender will fail if you try to write using an event source that doesn't exist unless it is running with local administrator privileges.
            See also http://logging.apache.org/log4net/release/faq.html#trouble-EventLog
            </p><p>
            The <span class="code">EventID</span> of the event log entry can be
            set using the <span class="code">EventID</span> property (<a href="P_log4net_Core_LoggingEvent_Properties.htm" target="">Properties</a>)
            on the <a href="T_log4net_Core_LoggingEvent.htm" target="">LoggingEvent</a>.
            </p><p>
            The <span class="code">Category</span> of the event log entry can be
            set using the <span class="code">Category</span> property (<a href="P_log4net_Core_LoggingEvent_Properties.htm" target="">Properties</a>)
            on the <a href="T_log4net_Core_LoggingEvent.htm" target="">LoggingEvent</a>.
            </p><p>
            There is a limit of 32K characters for an event log message
            </p><p>
            When configuring the EventLogAppender a mapping can be
            specified to map a logging level to an event log entry type. For example:
            </p><div id="ID0EBCAAAAA" class="OH_CodeSnippetContainer"><div class="OH_CodeSnippetContainerTabs" id="ID0EBCAAAAA_tabs"><div class="OH_CodeSnippetContainerTabLeft" id="ID0EBCAAAAA_tabimgleft"></div><div id="ID0EBCAAAAA_tab1" class="OH_CodeSnippetContainerTabSolo" EnableCopyCode="true"><a xmlns="">XML</a></div><div class="OH_CodeSnippetContainerTabRight" id="ID0EBCAAAAA_tabimgright"></div></div><div id="ID0EBCAAAAA_codecollection" class="OH_CodeSnippetContainerCodeCollection"><div class="OH_CodeSnippetToolBar"><div class="OH_CodeSnippetToolBarText"><a id="ID0EBCAAAAA_ViewColorized" href="#" onclick="javascript:ExchangeTitleContent('ID0EBCAAAAA','4')" title="View Colorized" style="display: none">View Colorized</a><a id="ID0EBCAAAAA_copycode" href="#" onclick="javascript:CopyToClipboard('ID0EBCAAAAA','4')" title="Copy to Clipboard">Copy to Clipboard</a><a id="ID0EBCAAAAA_PrintText" class="OH_PrintText" href="#" onclick="javascript:Print('ID0EBCAAAAA','4')" title="Print">Print</a></div></div><div id="ID0EBCAAAAA_code_Div1" class="OH_CodeSnippetContainerCode" style="display: block"><pre><span class="highlight-xml-bracket">&lt;</span><span class="highlight-xml-tag">mapping</span><span class="highlight-xml-bracket">&gt;</span> 
    <span class="highlight-xml-bracket">&lt;</span><span class="highlight-xml-tag">level</span> <span class="highlight-xml-attribute-name">value</span><span class="highlight-xml-attribute-equal">=</span><span class="highlight-xml-attribute-value">"ERROR"</span> <span class="highlight-xml-bracket">/&gt;</span> 
    <span class="highlight-xml-bracket">&lt;</span><span class="highlight-xml-tag">eventLogEntryType</span> <span class="highlight-xml-attribute-name">value</span><span class="highlight-xml-attribute-equal">=</span><span class="highlight-xml-attribute-value">"Error"</span> <span class="highlight-xml-bracket">/&gt;</span> 
<span class="highlight-xml-bracket">&lt;/</span><span class="highlight-xml-tag">mapping</span><span class="highlight-xml-bracket">&gt;</span> 
<span class="highlight-xml-bracket">&lt;</span><span class="highlight-xml-tag">mapping</span><span class="highlight-xml-bracket">&gt;</span> 
    <span class="highlight-xml-bracket">&lt;</span><span class="highlight-xml-tag">level</span> <span class="highlight-xml-attribute-name">value</span><span class="highlight-xml-attribute-equal">=</span><span class="highlight-xml-attribute-value">"DEBUG"</span> <span class="highlight-xml-bracket">/&gt;</span> 
    <span class="highlight-xml-bracket">&lt;</span><span class="highlight-xml-tag">eventLogEntryType</span> <span class="highlight-xml-attribute-name">value</span><span class="highlight-xml-attribute-equal">=</span><span class="highlight-xml-attribute-value">"Information"</span> <span class="highlight-xml-bracket">/&gt;</span> 
<span class="highlight-xml-bracket">&lt;/</span><span class="highlight-xml-tag">mapping</span><span class="highlight-xml-bracket">&gt;</span></pre></div><div id="ID0EBCAAAAA_code_Plain_Div1" class="OH_CodeSnippetContainerCode" style="display: none"><pre>&lt;mapping&gt; 
    &lt;level value="ERROR" /&gt; 
    &lt;eventLogEntryType value="Error" /&gt; 
&lt;/mapping&gt; 
&lt;mapping&gt; 
    &lt;level value="DEBUG" /&gt; 
    &lt;eventLogEntryType value="Information" /&gt; 
&lt;/mapping&gt;</pre></div></div></div><script>addSpecificTextLanguageTagSet('ID0EBCAAAAA');</script><p>
            The Level is the standard log4net logging level and eventLogEntryType can be any value
            from the <img src="./../icons/online_icon.gif" class="OH_offlineIcon" alt="Online" title="Online" /><a href="http://msdn2.microsoft.com/en-us/library/chx09fy8" target="_blank">EventLogEntryType</a> enum, i.e.:
            <ul><li>Error<br />an error event</li><li>Warning<br />a warning event</li><li>Information<br />an informational event</li></ul></p><a name="seeAlsoSection"><!----></a><div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">See Also</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"></div><div class="seeAlsoStyle"><a href="AllMembers_T_log4net_Appender_EventLogAppender.htm" target="">EventLogAppender Members</a></div><div class="seeAlsoStyle"><a href="N_log4net_Appender.htm" target="">log4net.Appender Namespace</a></div></div></div></div></div><div id="OH_footer" class="OH_footer"><p>Apache log4net, Apache and log4net are trademarks of The Apache Software Foundation.</p><p><a href="http://logging.apache.org/log4net/" target="_blank"><img src="./../icons/online_icon.gif" class="OH_offlineIcon" alt="Online" title="Online" /> 
						Copyright 2004-2015 The Apache Software Foundation (http://logging.apache.org/log4net/)</a></p><div class="OH_feedbacklink"><a href="mailto:http://logging.apache.org/log4net/mail-lists.html?subject=Apache+log4net%e2%84%a2+SDK+Documentation+EventLogAppender+Class+100+EN-US&amp;body=Your%20feedback%20is%20used%20to%20improve%20the%20documentation%20and%20the%20product.%20Your%20e-mail%20address%20will%20not%20be%20used%20for%20any%20other%20purpose%20and%20is%20disposed%20of%20after%20the%20issue%20you%20report%20is%20resolved.%20While%20working%20to%20resolve%20the%20issue%20that%20you%20report%2c%20you%20may%20be%20contacted%20via%20e-mail%20to%20get%20further%20details%20or%20clarification%20on%20the%20feedback%20you%20sent.%20After%20the%20issue%20you%20report%20has%20been%20addressed%2c%20you%20may%20receive%20an%20e-mail%20to%20let%20you%20know%20that%20your%20feedback%20has%20been%20addressed.">Send Feedback</a> on this topic to http://logging.apache.org/log4net/mail-lists.html.</div></div></body></html>