</ iframe > </noscript> <!-- End Google Tag Manager (noscript) --> <div id="BeforeHeaderContent"> </div> <div id="HeaderContent"> <div id="ProjectTitle">DataSource for Entity Framework in WPF</div> <div id="PageTitle"><div id="PageTitleText">FindSingle 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.Index`2.html">Index<T,TKey> Class</a> : FindSingle Method</td></tr></table></div> <div id="keyPopupContent" class="PopupContent"> The key value to search for. </div> <div id="BodyContent"> <div class="DescriptionContent">Finds the only item with the specified key value and throws an exception if there is not exactly one item with that key value.</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>'Declaration Public Overridable Function FindSingle( _ ByVal <i><a class="PopupLink" id="keyPopupLink" data-popupcontentsource="#keyPopupContent" data-popupshowevent="click mouseenter">key</a></i> As <a class="PopupLink" id="TKeyPopupLink" data-popupcontentsource="#TKeyPopupContent" data-popupshowevent="click mouseenter">TKey</a> _ ) As <a class="PopupLink" id="TPopupLink" data-popupcontentsource="#TPopupContent" data-popupshowevent="click mouseenter">T</a></pre> </div> <div id="Syntax-CS" class="FilteredContentCS"> <pre>public virtual <a class="PopupLink" id="TPopupLink" data-popupcontentsource="#TPopupContent" data-popupshowevent="click mouseenter">T</a> FindSingle( <a class="PopupLink" id="TKeyPopupLink" data-popupcontentsource="#TKeyPopupContent" data-popupshowevent="click mouseenter">TKey</a> <i><a class="PopupLink" id="keyPopupLink" data-popupcontentsource="#keyPopupContent" data-popupshowevent="click mouseenter">key</a></i> )</pre> </div> </div> <h4 class="dxh4">Parameters</h4><dl><dt><i>key</i></dt> <dd>The key value to search for.</dd></dl> <h4 class="dxh4">Return Value</h4><div class="ReturnsContent">The item of the collection that contains the specified key value, if found.</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.Index`2.html">Index<T,TKey> Class</a> <br><a href="C1.LiveLinq.4~C1.LiveLinq.Indexing.Index`2_members.html">Index<T,TKey> Members</a> </p> </div> </div> <div id="FooterContent"> <p> 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