﻿<html xmlns:MSHelp="http://msdn.microsoft.com/mshelp" xmlns:mshelp="http://msdn.microsoft.com/mshelp"><head><link rel="SHORTCUT ICON" href="./../icons/favicon.ico" /><style type="text/css">.OH_CodeSnippetContainerTabLeftActive, .OH_CodeSnippetContainerTabLeft,.OH_CodeSnippetContainerTabLeftDisabled { backgroundImageName: tabLeftBG.gif; }.OH_CodeSnippetContainerTabRightActive, .OH_CodeSnippetContainerTabRight,.OH_CodeSnippetContainerTabRightDisabled { backgroundImageName: tabRightBG.gif; }.OH_footer { backgroundImageName: footer_slice.gif; background-position: top; background-repeat: repeat-x; }</style><link rel="stylesheet" type="text/css" href="./../styles/branding.css" /><link rel="stylesheet" type="text/css" href="./../styles/branding-en-US.css" /><style type="text/css">
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		</style><script src="./../scripts/branding.js" type="text/javascript"><!----></script><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>ReadOnlyPropertiesDictionary.Contains Method </title><meta name="Language" content="en-us" /><meta name="System.Keywords" content="Contains method" /><meta name="System.Keywords" content="ReadOnlyPropertiesDictionary.Contains method" /><meta name="Microsoft.Help.F1" content="log4net.Util.ReadOnlyPropertiesDictionary.Contains" /><meta name="Microsoft.Help.Id" content="M:log4net.Util.ReadOnlyPropertiesDictionary.Contains(System.String)" /><meta name="Description" content="Test if the dictionary contains a specified key" /><meta name="Microsoft.Help.ContentType" content="Reference" /><meta name="BrandingAware" content="'true'" /><meta name="container" content="log4net.Util" /><meta name="file" content="M_log4net_Util_ReadOnlyPropertiesDictionary_Contains" /><meta name="guid" content="M_log4net_Util_ReadOnlyPropertiesDictionary_Contains" /><link type="text/css" rel="stylesheet" href="ms-help://Hx/HxRuntime/HxLink.css" /><meta name="SelfBranded" content="true" /></head><body onload="onLoad()" class="primary-mtps-offline-document"><div class="OH_outerDiv"><div class="OH_outerContent"><table class="TitleTable"><tr><td class="OH_tdTitleColumn">ReadOnlyPropertiesDictionary<span id="ID0EBBABAAA"> </span><script type="text/javascript">
					addToLanSpecTextIdSet("ID0EBBABAAA?vb=.|cpp=::|cs=.|fs=.|nu=.");
				</script>Contains 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">
            Test if the dictionary contains a specified key
            </div><p></p><b>Namespace:</b> <a href="N_log4net_Util.htm" target="">log4net.Util</a><br /><b>Assembly:</b> <span sdata="assembly">log4net</span> (in log4net.dll) Version: 1.2.15.0 (1.2.15.0)<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="ID0ECGDAAAAA" class="OH_CodeSnippetContainer"><div class="OH_CodeSnippetContainerTabs" id="ID0ECGDAAAAA_tabs"><div class="OH_CodeSnippetContainerTabLeftActive" id="ID0ECGDAAAAA_tabimgleft"></div><div id="ID0ECGDAAAAA_tab1" class="OH_CodeSnippetContainerTabActive" EnableCopyCode="true"><a href="#" onclick="javascript:ChangeTab('ID0ECGDAAAAA','C#','1','4');return false;">C#</a></div><div id="ID0ECGDAAAAA_tab2" class="OH_CodeSnippetContainerTab" EnableCopyCode="true"><a href="#" onclick="javascript:ChangeTab('ID0ECGDAAAAA','Visual Basic','2','4');return false;">VB</a></div><div id="ID0ECGDAAAAA_tab3" class="OH_CodeSnippetContainerTab" EnableCopyCode="true"><a href="#" onclick="javascript:ChangeTab('ID0ECGDAAAAA','Visual C++','3','4');return false;">C++</a></div><div id="ID0ECGDAAAAA_tab4" class="OH_CodeSnippetContainerTabDisabledNotFirst" EnableCopyCode="true" disabled="true"><a>F#</a></div><div class="OH_CodeSnippetContainerTabRight" id="ID0ECGDAAAAA_tabimgright"></div></div><div id="ID0ECGDAAAAA_codecollection" class="OH_CodeSnippetContainerCodeCollection"><div class="OH_CodeSnippetToolBar"><div class="OH_CodeSnippetToolBarText"><a id="ID0ECGDAAAAA_ViewColorized" href="#" onclick="javascript:ExchangeTitleContent('ID0ECGDAAAAA','4')" title="View Colorized" style="display: none">View Colorized</a><a id="ID0ECGDAAAAA_copycode" href="#" onclick="javascript:CopyToClipboard('ID0ECGDAAAAA','4')" title="Copy to Clipboard">Copy to Clipboard</a><a id="ID0ECGDAAAAA_PrintText" class="OH_PrintText" href="#" onclick="javascript:Print('ID0ECGDAAAAA','4')" title="Print">Print</a></div></div><div id="ID0ECGDAAAAA_code_Div1" class="OH_CodeSnippetContainerCode" style="display: block"><pre><span class="keyword">public</span> <span class="identifier">bool</span> <span class="identifier">Contains</span>(
	<span class="identifier">string</span> <span class="parameter">key</span>
)</pre></div><div id="ID0ECGDAAAAA_code_Plain_Div1" class="OH_CodeSnippetContainerCode" style="display: none"><pre>public bool Contains(
	string key
)</pre></div><div id="ID0ECGDAAAAA_code_Div2" class="OH_CodeSnippetContainerCode" style="display: none"><pre><span class="keyword">Public</span> <span class="keyword">Function</span> <span class="identifier">Contains</span> ( 
	<span class="parameter">key</span> <span class="keyword">As</span> <span class="identifier">String</span>
) <span class="keyword">As</span> <span class="identifier">Boolean</span></pre></div><div id="ID0ECGDAAAAA_code_Plain_Div2" class="OH_CodeSnippetContainerCode" style="display: none"><pre>Public Function Contains ( 
	key As String
) As Boolean</pre></div><div id="ID0ECGDAAAAA_code_Div3" class="OH_CodeSnippetContainerCode" style="display: none"><pre><span class="keyword">public</span>:
<span class="identifier">bool</span> <span class="identifier">Contains</span>(
	<span class="identifier">String</span>^ <span class="parameter">key</span>
)</pre></div><div id="ID0ECGDAAAAA_code_Plain_Div3" class="OH_CodeSnippetContainerCode" style="display: none"><pre>public:
bool Contains(
	String^ key
)</pre></div><div id="ID0ECGDAAAAA_code_Div4" class="OH_CodeSnippetContainerCode" style="display: none"><pre /></div><div id="ID0ECGDAAAAA_code_Plain_Div4" class="OH_CodeSnippetContainerCode" style="display: none"><pre /></div></div></div><script>addSpecificTextLanguageTagSet('ID0ECGDAAAAA');</script></div><div id="parameters"><h4 class="subHeading">Parameters</h4><dl paramName="key"><dt><span class="parameter">key</span></dt><dd>Type: <img src="./../icons/online_icon.gif" class="OH_offlineIcon" alt="Online" title="Online" /><a href="http://msdn2.microsoft.com/en-us/library/s1wwdcbf" target="_blank">System<span id="ID0EBCAAFDAAAAA"> </span><script type="text/javascript">
					addToLanSpecTextIdSet("ID0EBCAAFDAAAAA?vb=.|cpp=::|cs=.|fs=.|nu=.");
				</script>String</a><br /><span>the key to look for</span></dd></dl></div><h4 class="subHeading">Return Value</h4>Type: <img src="./../icons/online_icon.gif" class="OH_offlineIcon" alt="Online" title="Online" /><a href="http://msdn2.microsoft.com/en-us/library/a28wyd50" target="_blank">Boolean</a><br />true if the dictionary contains the specified key<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>
            Test if the dictionary contains a specified key
            </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="T_log4net_Util_ReadOnlyPropertiesDictionary.htm" target="">ReadOnlyPropertiesDictionary Class</a></div><div class="seeAlsoStyle"><a href="AllMembers_T_log4net_Util_ReadOnlyPropertiesDictionary.htm" target="">ReadOnlyPropertiesDictionary Members</a></div><div class="seeAlsoStyle"><a href="N_log4net_Util.htm" target="">log4net.Util 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" /> 
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