</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <div id="ProjectTitle">Data Source for Entity Framework</div> <div id="PageTitle"><div id="PageTitleText">Contains(LambdaExpression) Method</div></div> </div> <div id="AfterHeaderContent"> <!-- Spacing --> <span id="ToggleAllSectionsLink" class="FunctionLink"> <label id="CollapseAllLabel">Collapse All</label> <label id="ExpandAllLabel" style="display: none;">Expand All</label> </span><!-- Spacing --> <span id="LanguageFilterPopupLink" class="PopupLink" data-popupcontentsource="#LanguageCheckboxes" data-popuptitle='Language Filter'> <label id="ShowAllLabel" for="LanguageFilterPopupLink"> Language Filter: All </label> <label id="MultipleLabel" for="LanguageFilterPopupLink" style="display: none;"> Language Filter: Multiple </label> <label id="VBAllLabel" for="LanguageFilterPopupLink" style="display: none;"> Language Filter: Visual Basic </label> <label id="VBLabel" for="LanguageFilterPopupLink" style="display: none;">Language Filter: Visual Basic (Declaration)</label> <label id="CSLabel" for="LanguageFilterPopupLink" style="display: none;">Language Filter: C#</label> </span> <div class="PopupContent" id="LanguageCheckboxes"> <input data-languagename="VB" id="VBLanguageCheckbox" type="checkbox" class="ToggleLanguageCheckbox" checked="true" data-toggleclass="FilteredContentVB"> <label class="LanguageFilter" for="VBCheckbox"> Visual Basic (Declaration) </label> <br><input data-languagename="CS" id="CSLanguageCheckbox" type="checkbox" class="ToggleLanguageCheckbox" checked="true" data-toggleclass="FilteredContentCS"> <label class="LanguageFilter" for="CSCheckbox"> C# </label> </div> </div> <div class="BreadcrumbsContainer"><table><tr><td> <a href="C1.LiveLinq.4~C1.LiveLinq.Indexing_namespace.html">C1.LiveLinq.Indexing Namespace</a> > <a href="C1.LiveLinq.4~C1.LiveLinq.Indexing.ScannerCollection`1.html">ScannerCollection<T> Class</a> > <a href="C1.LiveLinq.4~C1.LiveLinq.Indexing.ScannerCollection`1~Contains.html">Contains Method</a> : Contains(LambdaExpression) Method</td></tr></table></div> <div id="keySelectorPopupContent" class="PopupContent"> Key selector expression of an index, see <a href="C1.LiveLinq.4~C1.LiveLinq.Indexing.IndexDefinition`1~KeySelector.html">KeySelector</a>. </div> <div id="BodyContent"> <div class="DescriptionContent">Determines whether an index with the specified key selector exists in the collection.</div> <div class="SectionHeading" id="syntaxSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">Syntax</span></div><div id="syntaxSectionContent" class="SectionContent"> <div class="TabContainer" id="TabContainer"> <ul> <li class="FilteredContentVBAll"><a href="#Syntax-VBAll">Visual Basic</a></li> <li class="FilteredContentCS"><a href="#Syntax-CS">C#</a></li> </ul> <div id="Syntax-VB" class="FilteredContentVB"> <pre><pre><span style="color: #008000; ">'Declaration </span> </pre><pre><span style="color: #0000FF; ">Public</span> <span style="color: #0000FF; ">Overloads</span> <span style="color: #0000FF; ">Function</span> Contains( _ <span style="color: #0000FF; ">ByVal</span> <i><a class="PopupLink" id="keySelectorPopupLink" data-popupcontentsource="#keySelectorPopupContent" data-popupshowevent="click mouseenter">keySelector</a></i> <span style="color: #0000FF; ">As</span> System.Linq.Expressions.LambdaExpression _ ) <span style="color: #0000FF; ">As</span> System.Boolean</pre></pre> </div> <div id="Syntax-CS" class="FilteredContentCS"> <pre><pre><span style="color: #0000FF; ">public</span> System.<span style="color: #0000FF; ">bool</span> Contains( System.Linq.Expressions.LambdaExpression <i><a class="PopupLink" id="keySelectorPopupLink" data-popupcontentsource="#keySelectorPopupContent" data-popupshowevent="click mouseenter">keySelector</a></i> )</pre></pre> </div> </div> <h4 class="dxh4">Parameters</h4><dl><dt><i>keySelector</i></dt> <dd>Key selector expression of an index, see <a href="C1.LiveLinq.4~C1.LiveLinq.Indexing.IndexDefinition`1~KeySelector.html">KeySelector</a>.</dd></dl> <h4 class="dxh4">Return Value</h4><div class="ReturnsContent"><b>true</b> if an index with the specified key selector is found in the collection; otherwise, <b>false</b>.</div></div> <a name="exampleBookmark"></a> <div class="SectionHeading" id="requirementsSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">Requirements</span></div><div id="requirementsSectionContent" class="SectionContent"><p><b>Target Platforms:</b> Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2</p></div> <a name="seealsobookmark"></a> <div class="SectionHeading" id="seealsoSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">See Also</span></div><div id="seealsoSectionContent" class="SectionContent"><h4 class="subHeading">Reference</h4><p><a href="C1.LiveLinq.4~C1.LiveLinq.Indexing.ScannerCollection`1.html">ScannerCollection<T> Class</a> <br><a href="C1.LiveLinq.4~C1.LiveLinq.Indexing.ScannerCollection`1_members.html">ScannerCollection<T> Members</a> <br><a href="C1.LiveLinq.4~C1.LiveLinq.Indexing.ScannerCollection`1~Contains.html">Overload List</a> </p> </div> </div> <div id="FooterContent"> <p> </p><p> </p><hr style="height: 1px"><p>Copyright (c) <script type="text/javascript"> var theDate=new Date() document.write(theDate.getFullYear()) </script> GrapeCity, inc. 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