﻿<html><head><meta http-equiv="X-UA-Compatible" content="IE=edge" /><link rel="shortcut icon" href="../icons/favicon.ico" /><style type="text/css">.OH_CodeSnippetContainerTabLeftActive, .OH_CodeSnippetContainerTabLeft,.OH_CodeSnippetContainerTabLeftDisabled { }.OH_CodeSnippetContainerTabRightActive, .OH_CodeSnippetContainerTabRight,.OH_CodeSnippetContainerTabRightDisabled { }.OH_footer { }</style><link rel="stylesheet" type="text/css" href="../styles/branding.css" /><link rel="stylesheet" type="text/css" href="../styles/branding-en-US.css" /><script type="text/javascript" src="../scripts/branding.js"> </script><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Logger Class</title><meta name="Language" content="en-us" /><meta name="System.Keywords" content="Logger class" /><meta name="System.Keywords" content="log4net.Repository.Hierarchy.Logger class" /><meta name="System.Keywords" content="Logger class, about Logger class" /><meta name="Microsoft.Help.F1" content="log4net.Repository.Hierarchy.Logger" /><meta name="Microsoft.Help.Id" content="T:log4net.Repository.Hierarchy.Logger" /><meta name="Description" content="Implementation of used by" /><meta name="Microsoft.Help.ContentType" content="Reference" /><meta name="BrandingAware" content="true" /><meta name="container" content="log4net.Repository.Hierarchy" /><meta name="file" content="T_log4net_Repository_Hierarchy_Logger" /><meta name="guid" content="T_log4net_Repository_Hierarchy_Logger" /></head><body onload="OnLoad('cs')"><input type="hidden" id="userDataCache" class="userDataStyle" /><div class="OH_outerDiv"><div class="OH_outerContent"><table class="TitleTable"><tr><td class="OH_tdTitleColumn">Logger Class</td><td class="OH_tdRunningTitleColumn">Apache log4net™ SDK Documentation</td></tr></table><div id="mainSection"><div id="mainBody"><span class="introStyle"></span><div class="summary">
            Implementation of <a href="T_log4net_Core_ILogger.htm">ILogger</a> used by <a href="P_log4net_Repository_Hierarchy_Logger_Hierarchy.htm">Hierarchy</a></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><a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">System<span id="LST2BD9FBD6_0"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST2BD9FBD6_0?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Object</a><br />  <span class="selflink">log4net.Repository.Hierarchy<span id="LST2BD9FBD6_1"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST2BD9FBD6_1?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Logger</span><br />    <a href="T_log4net_Repository_Hierarchy_RootLogger.htm">log4net.Repository.Hierarchy<span id="LST2BD9FBD6_2"></span><script type="text/javascript">AddLanguageSpecificTextSet("LST2BD9FBD6_2?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>RootLogger</a><br /><p> </p><strong>Namespace:</strong> <a href="N_log4net_Repository_Hierarchy.htm">log4net.Repository.Hierarchy</a><br /><strong>Assembly:</strong> log4net (in log4net.dll) Version: 2.0.8.0-.NET 4.0<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 class="OH_CodeSnippetContainer"><div class="OH_CodeSnippetContainerTabs"><div class="OH_CodeSnippetContainerTabLeft" id="ID0EDCA_tabimgleft"> </div><div id="ID0EDCA_tab1" class="OH_CodeSnippetContainerTabFirst"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','cs','1','4');return false;">C#</a></div><div id="ID0EDCA_tab2" class="OH_CodeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','vb','2','4');return false;">VB</a></div><div id="ID0EDCA_tab3" class="OH_CodeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','cpp','3','4');return false;">C++</a></div><div id="ID0EDCA_tab4" class="OH_CodeSnippetContainerTab"><a href="#" onclick="javascript:ChangeTab('ID0EDCA','fs','4','4');return false;">F#</a></div><div class="OH_CodeSnippetContainerTabRight" id="ID0EDCA_tabimgright"> </div></div><div class="OH_CodeSnippetContainerCodeCollection"><div class="OH_CodeSnippetToolBar"><div class="OH_CodeSnippetToolBarText"><a id="ID0EDCA_copyCode" href="#" onclick="javascript:CopyToClipboard('ID0EDCA');return false;" title="Copy">Copy</a></div></div><div id="ID0EDCA_code_Div1" class="OH_CodeSnippetContainerCode" style="display: block"><pre xml:space="preserve"><span class="keyword">public</span> <span class="keyword">abstract</span> <span class="keyword">class</span> <span class="identifier">Logger</span> : <span class="identifier">IAppenderAttachable</span>, 
	<span class="identifier">ILogger</span></pre></div><div id="ID0EDCA_code_Div2" class="OH_CodeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">Public</span> <span class="keyword">MustInherit</span> <span class="keyword">Class</span> <span class="identifier">Logger</span>
	<span class="keyword">Implements</span> <span class="identifier">IAppenderAttachable</span>, <span class="identifier">ILogger</span></pre></div><div id="ID0EDCA_code_Div3" class="OH_CodeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">public</span> <span class="keyword">ref class</span> <span class="identifier">Logger</span> <span class="keyword">abstract</span> : <span class="identifier">IAppenderAttachable</span>, 
	<span class="identifier">ILogger</span></pre></div><div id="ID0EDCA_code_Div4" class="OH_CodeSnippetContainerCode" style="display: none"><pre xml:space="preserve">[&lt;<span class="identifier">AbstractClassAttribute</span>&gt;]
<span class="keyword">type</span> <span class="identifier">Logger</span> =  
    <span class="keyword">class</span>
        <span class="keyword">interface</span> <span class="identifier">IAppenderAttachable</span>
        <span class="keyword">interface</span> <span class="identifier">ILogger</span>
    <span class="keyword">end</span></pre></div></div></div><script type="text/javascript">AddLanguageTabSet("ID0EDCA");</script><p>The <span class="selflink">Logger</span> type exposes the following members.</p><div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">Constructors</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"> </div><table id="memberList" class="members"><tr><th class="ps_iconColumn">
								 
							</th><th>Name</th><th>Description</th></tr><tr data="protected;declared;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger__ctor.htm">Logger</a></td><td><div class="summary">
            This constructor created a new <span class="selflink">Logger</span> instance and
            sets its name.
            </div></td></tr></table><a href="#mainBody">Top</a><div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">Properties</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"> </div><table id="memberList" class="members"><tr><th class="ps_iconColumn">
								 
							</th><th>Name</th><th>Description</th></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" alt="Public property" title="Public property" /></td><td><a href="P_log4net_Repository_Hierarchy_Logger_Additivity.htm">Additivity</a></td><td><div class="summary">
            Gets or sets a value indicating if child loggers inherit their parent's appenders.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" alt="Public property" title="Public property" /></td><td><a href="P_log4net_Repository_Hierarchy_Logger_Appenders.htm">Appenders</a></td><td><div class="summary">
            Get the appenders contained in this logger as an 
            <a href="http://msdn2.microsoft.com/en-us/library/b1ht6113" target="_blank">ICollection</a>.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" alt="Public property" title="Public property" /></td><td><a href="P_log4net_Repository_Hierarchy_Logger_EffectiveLevel.htm">EffectiveLevel</a></td><td><div class="summary">
            Gets the effective level for this logger.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" alt="Public property" title="Public property" /></td><td><a href="P_log4net_Repository_Hierarchy_Logger_Hierarchy.htm">Hierarchy</a></td><td><div class="summary">
            Gets or sets the <a href="P_log4net_Repository_Hierarchy_Logger_Hierarchy.htm">Hierarchy</a> where this 
            <span class="code">Logger</span> instance is attached to.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" alt="Public property" title="Public property" /></td><td><a href="P_log4net_Repository_Hierarchy_Logger_Level.htm">Level</a></td><td><div class="summary">
            Gets or sets the assigned <a href="P_log4net_Repository_Hierarchy_Logger_Level.htm">Level</a>, if any, for this Logger.  
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" alt="Public property" title="Public property" /></td><td><a href="P_log4net_Repository_Hierarchy_Logger_Name.htm">Name</a></td><td><div class="summary">
            Gets the logger name.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" alt="Public property" title="Public property" /></td><td><a href="P_log4net_Repository_Hierarchy_Logger_Parent.htm">Parent</a></td><td><div class="summary">
            Gets or sets the parent logger in the hierarchy.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubproperty.gif" alt="Public property" title="Public property" /></td><td><a href="P_log4net_Repository_Hierarchy_Logger_Repository.htm">Repository</a></td><td><div class="summary">
            Gets the <a href="T_log4net_Repository_ILoggerRepository.htm">ILoggerRepository</a> where this 
            <span class="code">Logger</span> instance is attached to.
            </div></td></tr></table><a href="#mainBody">Top</a><div class="OH_CollapsibleAreaRegion"><div class="OH_regiontitle">Methods</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"> </div><table id="memberList" class="members"><tr><th class="ps_iconColumn">
								 
							</th><th>Name</th><th>Description</th></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_AddAppender.htm">AddAppender</a></td><td><div class="summary">
            Add <span class="parameter">newAppender</span> to the list of appenders of this
            Logger instance.
            </div></td></tr><tr data="protected;declared;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_CallAppenders.htm">CallAppenders</a></td><td><div class="summary">
            Deliver the <a href="T_log4net_Core_LoggingEvent.htm">LoggingEvent</a> to the attached appenders.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_CloseNestedAppenders.htm">CloseNestedAppenders</a></td><td><div class="summary">
            Closes all attached appenders implementing the <a href="T_log4net_Core_IAppenderAttachable.htm">IAppenderAttachable</a> interface.
            </div></td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/bsc2ak47" target="_blank">Equals</a></td><td><div class="summary">
                    Determines whether the specified <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a> is equal to the current <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.
                </div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/4k87zsw7" target="_blank">Finalize</a></td><td><div class="summary">
                    Allows an <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a> to attempt to free resources and perform other cleanup operations before the <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a> is reclaimed by garbage collection.
                </div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="protected;declared;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_ForcedLog.htm">ForcedLog(LoggingEvent)</a></td><td><div class="summary">
            Creates a new logging event and logs the event without further checks.
            </div></td></tr><tr data="protected;declared;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_ForcedLog_1.htm">ForcedLog(Type, Level, Object, Exception)</a></td><td><div class="summary">
            Creates a new logging event and logs the event without further checks.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_GetAppender.htm">GetAppender</a></td><td><div class="summary">
            Look for the appender named as <span class="code">name</span></div></td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/zdee4b3y" target="_blank">GetHashCode</a></td><td><div class="summary">
                    Serves as a hash function for a particular type. 
                </div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/dfwy45w9" target="_blank">GetType</a></td><td><div class="summary">
                    Gets the <a href="http://msdn2.microsoft.com/en-us/library/42892f65" target="_blank">Type</a> of the current instance.
                </div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_IsEnabledFor.htm">IsEnabledFor</a></td><td><div class="summary">
            Checks if this logger is enabled for a given <a href="P_log4net_Repository_Hierarchy_Logger_Level.htm">Level</a> passed as parameter.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_Log_1.htm">Log(LoggingEvent)</a></td><td><div class="summary">
            This is the most generic printing method that is intended to be used 
            by wrappers.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_Log.htm">Log(Level, Object, Exception)</a></td><td><div class="summary">
            This is the most generic printing method. This generic form is intended to be used by wrappers
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_Log_2.htm">Log(Type, Level, Object, Exception)</a></td><td><div class="summary">
            This generic form is intended to be used by wrappers.
            </div></td></tr><tr data="protected;inherited;notNetfw;"><td><img src="../icons/protmethod.gif" alt="Protected method" title="Protected method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/57ctke0a" target="_blank">MemberwiseClone</a></td><td><div class="summary">
                    Creates a shallow copy of the current <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.
                </div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_RemoveAllAppenders.htm">RemoveAllAppenders</a></td><td><div class="summary">
            Remove all previously added appenders from this Logger instance.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_RemoveAppender_1.htm">RemoveAppender(String)</a></td><td><div class="summary">
            Remove the appender passed as parameter form the list of appenders.
            </div></td></tr><tr data="public;declared;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="M_log4net_Repository_Hierarchy_Logger_RemoveAppender.htm">RemoveAppender(IAppender)</a></td><td><div class="summary">
            Remove the appender passed as parameter form the list of appenders.
            </div></td></tr><tr data="public;inherited;notNetfw;"><td><img src="../icons/pubmethod.gif" alt="Public method" title="Public method" /></td><td><a href="http://msdn2.microsoft.com/en-us/library/7bxwbwt2" target="_blank">ToString</a></td><td><div class="summary">
                    Returns a <a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">String</a> that represents the current <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.
                </div> (Inherited from <a href="http://msdn2.microsoft.com/en-us/library/e5kfa45b" target="_blank">Object</a>.)</td></tr></table><a href="#mainBody">Top</a><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>
            Internal class used to provide implementation of <a href="T_log4net_Core_ILogger.htm">ILogger</a>
            interface. Applications should use <a href="T_log4net_LogManager.htm">LogManager</a> to get
            logger instances.
            </p><p>
            This is one of the central classes in the log4net implementation. One of the
            distinctive features of log4net are hierarchical loggers and their
            evaluation. The <a href="P_log4net_Repository_Hierarchy_Logger_Hierarchy.htm">Hierarchy</a> organizes the <span class="selflink">Logger</span>
            instances into a rooted tree hierarchy.
            </p><p>
            The <span class="selflink">Logger</span> class is abstract. Only concrete subclasses of
            <span class="selflink">Logger</span> can be created. The <a href="T_log4net_Repository_Hierarchy_ILoggerFactory.htm">ILoggerFactory</a>
            is used to create instances of this type for the <a href="P_log4net_Repository_Hierarchy_Logger_Hierarchy.htm">Hierarchy</a>.
            </p><div class="OH_CollapsibleAreaRegion" id="seeAlsoSection"><div class="OH_regiontitle">See Also</div><div class="OH_CollapsibleArea_HrDiv"><hr class="OH_CollapsibleArea_Hr" /></div></div><div class="OH_clear"> </div><h4 class="subHeading">Reference</h4><div class="seeAlsoStyle"><a href="N_log4net_Repository_Hierarchy.htm">log4net.Repository.Hierarchy Namespace</a></div></div></div></div></div><div id="OH_footer" class="OH_footer">Apache log4net, Apache and log4net are trademarks of The Apache Software Foundation.<p><a href="http://logging.apache.org/log4net/" target="_blank">Copyright 2004-2017 The Apache Software Foundation</a></p><div class="OH_feedbacklink">Send comments on this topic to
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