﻿<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>FileAppender.LockingModelBase.OpenFile Method </title><meta name="Language" content="en-us" /><meta name="System.Keywords" content="OpenFile method" /><meta name="System.Keywords" content="FileAppender.LockingModelBase.OpenFile method" /><meta name="Microsoft.Help.F1" content="log4net.Appender.FileAppender.LockingModelBase.OpenFile" /><meta name="Microsoft.Help.Id" content="M:log4net.Appender.FileAppender.LockingModelBase.OpenFile(System.String,System.Boolean,System.Text.Encoding)" /><meta name="Description" content="Open the output file" /><meta name="Microsoft.Help.ContentType" content="Reference" /><meta name="BrandingAware" content="true" /><meta name="container" content="log4net.Appender" /><meta name="file" content="M_log4net_Appender_FileAppender_LockingModelBase_OpenFile" /><meta name="guid" content="M_log4net_Appender_FileAppender_LockingModelBase_OpenFile" /></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">FileAppender<span id="LSTD349F5D4_0"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTD349F5D4_0?cpp=::|nu=.");</script>LockingModelBase<span id="LSTD349F5D4_1"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTD349F5D4_1?cpp=::|nu=.");</script>OpenFile Method </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">
            Open the output file
            </div><p> </p><strong>Namespace:</strong> <a href="N_log4net_Appender.htm">log4net.Appender</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">void</span> <span class="identifier">OpenFile</span>(
	<span class="identifier">string</span> <span class="parameter">filename</span>,
	<span class="identifier">bool</span> <span class="parameter">append</span>,
	<span class="identifier">Encoding</span> <span class="parameter">encoding</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">MustOverride</span> <span class="keyword">Sub</span> <span class="identifier">OpenFile</span> ( 
	<span class="parameter">filename</span> <span class="keyword">As</span> <span class="identifier">String</span>,
	<span class="parameter">append</span> <span class="keyword">As</span> <span class="identifier">Boolean</span>,
	<span class="parameter">encoding</span> <span class="keyword">As</span> <span class="identifier">Encoding</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">virtual</span> <span class="keyword">void</span> <span class="identifier">OpenFile</span>(
	<span class="identifier">String</span>^ <span class="parameter">filename</span>, 
	<span class="identifier">bool</span> <span class="parameter">append</span>, 
	<span class="identifier">Encoding</span>^ <span class="parameter">encoding</span>
) <span class="keyword">abstract</span></pre></div><div id="ID0EDCA_code_Div4" class="OH_CodeSnippetContainerCode" style="display: none"><pre xml:space="preserve"><span class="keyword">abstract</span> <span class="identifier">OpenFile</span> : 
        <span class="parameter">filename</span> : <span class="identifier">string</span> * 
        <span class="parameter">append</span> : <span class="identifier">bool</span> * 
        <span class="parameter">encoding</span> : <span class="identifier">Encoding</span> <span class="keyword">-&gt;</span> <span class="keyword">unit</span> 
</pre></div></div></div><script type="text/javascript">AddLanguageTabSet("ID0EDCA");</script><h4 class="subHeading">Parameters</h4><dl><dt><span class="parameter">filename</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">System<span id="LSTD349F5D4_2"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTD349F5D4_2?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>String</a><br />The filename to use</dd><dt><span class="parameter">append</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">System<span id="LSTD349F5D4_3"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTD349F5D4_3?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Boolean</a><br />Whether to append to the file, or overwrite</dd><dt><span class="parameter">encoding</span></dt><dd>Type: <a href="http://msdn2.microsoft.com/en-us/library/86hf4sb8" target="_blank">System.Text<span id="LSTD349F5D4_4"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTD349F5D4_4?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>Encoding</a><br />The encoding to use</dd></dl><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>
            Open the file specified and prepare for logging. 
            No writes will be made until <a href="M_log4net_Appender_FileAppender_LockingModelBase_AcquireLock.htm">AcquireLock<span id="LSTD349F5D4_5"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTD349F5D4_5?cs=()|vb=|cpp=()|nu=()|fs=()");</script></a> is called.
            Must be called before any calls to <a href="M_log4net_Appender_FileAppender_LockingModelBase_AcquireLock.htm">AcquireLock<span id="LSTD349F5D4_6"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTD349F5D4_6?cs=()|vb=|cpp=()|nu=()|fs=()");</script></a>,
            <a href="M_log4net_Appender_FileAppender_LockingModelBase_ReleaseLock.htm">ReleaseLock<span id="LSTD349F5D4_7"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTD349F5D4_7?cs=()|vb=|cpp=()|nu=()|fs=()");</script></a> and <a href="M_log4net_Appender_FileAppender_LockingModelBase_CloseFile.htm">CloseFile<span id="LSTD349F5D4_8"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTD349F5D4_8?cs=()|vb=|cpp=()|nu=()|fs=()");</script></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="T_log4net_Appender_FileAppender_LockingModelBase.htm">FileAppender<span id="LSTD349F5D4_9"></span><script type="text/javascript">AddLanguageSpecificTextSet("LSTD349F5D4_9?cs=.|vb=.|cpp=::|nu=.|fs=.");</script>LockingModelBase Class</a></div><div class="seeAlsoStyle"><a href="N_log4net_Appender.htm">log4net.Appender 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
        <a id="HT_MailLink" href="mailto:http%3A%2F%2Flogging.apache.org%2Flog4net%2Fmail-lists.html?Subject=Apache log4net™ SDK Documentation">http://logging.apache.org/log4net/mail-lists.html</a></div><script type="text/javascript">
        var HT_mailLink = document.getElementById("HT_MailLink");
        var HT_mailLinkText = HT_mailLink.innerHTML;
        HT_mailLink.href += ": " + document.title + "\u0026body=" + encodeURIComponent("Your feedback is used to improve the documentation and the product. Your e-mail address will not be used for any other purpose and is disposed of after the issue you report is resolved. While working to resolve the issue that you report, you may be contacted via e-mail to get further details or clarification on the feedback you sent. After the issue you report has been addressed, you may receive an e-mail to let you know that your feedback has been addressed.");
        HT_mailLink.innerHTML = HT_mailLinkText;
        </script> </div></body></html>