</ 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">ToIndexed<T>(INotifyCollectionChanged) 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.WPF.LiveLinq_namespace.html">C1.WPF.LiveLinq Namespace</a> > <a href="C1.LiveLinq.4~C1.WPF.LiveLinq.WpfExtensions.html">WpfExtensions Class</a> > <a href="C1.LiveLinq.4~C1.WPF.LiveLinq.WpfExtensions~ToIndexed.html">ToIndexed Method</a> : ToIndexed<T>(INotifyCollectionChanged) Method</td></tr></table></div> <div id="TPopupContent" class="PopupContent"> The type of the elements in the collection. </div> <div id="sourcePopupContent" class="PopupContent"> An <strong>System.Collections.Specialized.INotifyCollectionChanged</strong> data source to represent as an <a href="C1.LiveLinq.4~C1.LiveLinq.Collections.IndexedCollection`1.html">C1.LiveLinq.Collections.IndexedCollection<T></a>. </div> <div id="BodyContent"> <div class="DescriptionContent">Creates an <a href="C1.LiveLinq.4~C1.LiveLinq.Collections.IndexedCollection`1.html">C1.LiveLinq.Collections.IndexedCollection<T></a> based on the specified <strong>System.Collections.Specialized.INotifyCollectionChanged</strong> data source.</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 Overloads Shared Function ToIndexed(Of <a class="PopupLink" id="TPopupLink" data-popupcontentsource="#TPopupContent" data-popupshowevent="click mouseenter">T</a>)( _ ByVal <i><a class="PopupLink" id="sourcePopupLink" data-popupcontentsource="#sourcePopupContent" data-popupshowevent="click mouseenter">source</a></i> As System.Collections.Specialized.INotifyCollectionChanged _ ) As <a href="C1.LiveLinq.4~C1.LiveLinq.Collections.IndexedCollection`1.html">IndexedCollection(Of T)</a></pre> </div> <div id="Syntax-CS" class="FilteredContentCS"> <pre>public static <a href="C1.LiveLinq.4~C1.LiveLinq.Collections.IndexedCollection`1.html">IndexedCollection<T></a> ToIndexed<<a class="PopupLink" id="TPopupLink" data-popupcontentsource="#TPopupContent" data-popupshowevent="click mouseenter">T</a>>( System.Collections.Specialized.INotifyCollectionChanged <i><a class="PopupLink" id="sourcePopupLink" data-popupcontentsource="#sourcePopupContent" data-popupshowevent="click mouseenter">source</a></i> )</pre> </div> </div> <h4 class="dxh4">Parameters</h4><dl><dt><i>source</i></dt> <dd>An <strong>System.Collections.Specialized.INotifyCollectionChanged</strong> data source to represent as an <a href="C1.LiveLinq.4~C1.LiveLinq.Collections.IndexedCollection`1.html">C1.LiveLinq.Collections.IndexedCollection<T></a>.</dd></dl> <h4 class="dxh4">Type Parameters</h4><dl> <dt><i>T</i></dt> <dd>The type of the elements in the collection.</dd> </dl> <h4 class="dxh4">Return Value</h4><div class="ReturnsContent">An <a href="C1.LiveLinq.4~C1.LiveLinq.Collections.IndexedCollection`1.html">C1.LiveLinq.Collections.IndexedCollection<T></a> that contains the same elements as the <strong>System.Collections.Specialized.INotifyCollectionChanged</strong> and enables indexing of that data source.</div></div> <div class="SectionHeading" id="remarksSectionHeading"><span class="SectionHeadingIcon"><!-- --></span><span class="SectionHeadingText">Remarks</span></div><div id="remarksSectionContent" class="SectionContent"><p>Use this method to index and query your existing data sources implementing <strong>System.Collections.Specialized.INotifyCollectionChanged</strong>. The element type of this data source must implement <strong>System.ComponentModel.INotifyPropertyChanged</strong>, see <span>Using the built-in collection class IndexedCollection(T) (LiveLinq to Objects)|tag=Using_the_built_in_collection_class_IndexedCollectionT_LiveLinq_to_Objects</span>.</p> <p>The collection returned by this method also implements the <strong>System.Collections.Specialized.INotifyCollectionChanged</strong> interface, because this method actually returns objects of an internal derived class that implements that interface.</p> <p><b>Note:</b> Indexes created on the resulting <a href="C1.LiveLinq.4~C1.LiveLinq.Collections.IndexedCollection`1.html">C1.LiveLinq.Collections.IndexedCollection<T></a> are owned by it and not by the original data source. Every <b>ToIndexed()</b> call creates a separate object that has its own separate indexes. Avoid calling <b>ToIndexed()</b> repeatedly for the same collection because it can increase the cost of maintaining indexes.</p></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.WPF.LiveLinq.WpfExtensions.html">WpfExtensions Class</a> <br><a href="C1.LiveLinq.4~C1.WPF.LiveLinq.WpfExtensions_members.html">WpfExtensions Members</a> <br><a href="C1.LiveLinq.4~C1.WPF.LiveLinq.WpfExtensions~ToIndexed.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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