</ 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">Query Expressions Supported in Live Views</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> </div> <div class="BreadcrumbsContainer"><table><tr><td> <a href="ComponentOneDataSourceforEntityFramework.html">DataSource for Entity Framework in WPF </a> > <a href="ProgrammingGuide.html">Programming Guide </a> > Query Expressions Supported in Live Views</td></tr></table></div> <div id="BodyContent"> <p>Apart from the limitations on query operators, a query must satisfy an additional condition in order to be used as a live view. Fortunately, this condition is satisfied in most cases, so you should care about it only if your query contains some special expressions, which is relatively rare (except that all classes used in LiveLinq to Objects must satisfy the property notification condition, but that was already mentioned in <span class="C1HJump">Using the built-in collection class IndexedCollection<T> (LiveLinq to Objects)<span style="DISPLAY: none">|tag=Using_the_built_in_collection_class_IndexedCollectionT_LiveLinq_to_Objects</span></span>). Unfortunately, this condition is not verified by LiveLinq automatically, so it is your responsibility to make sure it is satisfied. If this condition is not satisfied, your view will not react to changes in its base data. We give two descriptions of this condition: one short, for basic understanding, and another detailed, for advanced usage.</p> <a name="seealsobookmark"></a> </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. All rights reserved. <script> $(document).ready(function() { if (!(window.self !== window.top)) { // Not running in a frameset // Get the page name var pageName = location.href.substring(location.href.lastIndexOf("/") + 1); if (pageName.indexOf("#") != -1) { pageName = pageName.substring(0, pageName.indexOf("#")); } // Append to webframe.html var framePage = "webframe.html#" + pageName; location.href = framePage; } }); </script></p> <a target="_blank" href="http://our.componentone.com/groups/">Product Support Forum</a> | <a target="_blank" href="http://feedback.componentone.com/forums/272000-wpf-and-silverlight-documentation">Documentation Feedback</a> </div> </body> </html>