binding - OutOfMemoryException with very simple WPF application with Entity Framework -

i have searched question, have found questions people loading tables millions of entries. not case in situation.

i new wpf , new entity framework. used visual studio 2010 data source wizard add connection database. used drag , drop drag view data source wpf window. view contains 32,000 records , takes 15 seconds select.

when built , ran application first time, worked fine , displayed data in window. feel difference, display same data in both listview , datagrid, no different when use 1 of controls:

when run application second time, never finishes starting up. displays 'busy' cursor , throws outofmemoryexception after while. if watch performance in task manager, memory keeps rising , rising until hits exception.

i have debugged this: not happen when executing ef query. have made save query results list , assign datasource of window. can see in debugger query terminates , list generated fine, can inspect in debugger.

it's data binding mechanism after query run seems leak memory nothing , throw. way, there no call stack post.

has else had problem, , how did solve it?

here more information: it's windows 7.

mainwindow.xaml looks this:

    <window x:class="wpfapplication2.mainwindow"         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         title="mainwindow" height="350" width="525" loaded="window_loaded"          mc:ignorable="d"          xmlns:d="http://schemas.microsoft.com/expression/blend/2008"          xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"          xmlns:my="clr-namespace:wpfapplication2">     <window.resources>         <collectionviewsource x:key="vmyviewsource" d:designsource="{d:designinstance my:vmyview, createlist=true}" />     </window.resources>     <grid datacontext="{staticresource vmyviewsource}">         <grid.rowdefinitions>             <rowdefinition height="20"/>             <rowdefinition height="auto"/>             <rowdefinition height="20"/>             <rowdefinition height="*"/>         </grid.rowdefinitions>         <grid.columndefinitions>             <columndefinition width="*"/>         </grid.columndefinitions>          <textblock grid.row="0" text="my view in listview:"/>         <listview grid.row="1"                    itemssource="{binding}"                    margin="0"                    name="vmylistview"                    selectionmode="single">             <listview.itemcontainerstyle>                 <style>                     <setter property="control.horizontalcontentalignment" value="stretch" />                     <setter property="control.verticalcontentalignment" value="stretch" />                 </style>             </listview.itemcontainerstyle>             <listview.view>                 <gridview>                     <gridviewcolumn x:name="idcolumn1" header="id" width="80">                         <gridviewcolumn.celltemplate>                             <datatemplate>                                 <textbox margin="6,-1,-6,-1" text="{binding path=id,mode=oneway, validatesonexceptions=true, notifyonvalidationerror=true}" />                             </datatemplate>                         </gridviewcolumn.celltemplate>                     </gridviewcolumn>                     <gridviewcolumn x:name="name" header="name" width="80">                         <gridviewcolumn.celltemplate>                             <datatemplate>                                 <textbox margin="-6,-1" text="{binding path=name, mode=oneway, validatesonexceptions=true, notifyonvalidationerror=true}" />                             </datatemplate>                         </gridviewcolumn.celltemplate>                     </gridviewcolumn>                     ... (more gridviewcolumns)                 </gridview>             </listview.view>         </listview>          <textblock grid.row="2" text="my view in datagrid:"/>          <datagrid grid.row="3"                    autogeneratecolumns="false"                    enablerowvirtualization="true"                    horizontalalignment="left"                    itemssource="{binding}"                    margin="0"                    name="vmyviewdatagrid"                    rowdetailsvisibilitymode="visiblewhenselected"                    verticalalignment="top" >             <datagrid.columns>                 <datagridtextcolumn x:name="idcolumn" binding="{binding path=id}" header="id" width="sizetoheader" />                 <datagridtextcolumn x:name="namecolumn" binding="{binding path=name}" header="name" width="sizetoheader" />                 ... (more datagridtextcolumns, celltemplate textbox inside)             </datagrid.columns>         </datagrid>     </grid> </window> 

and window_loaded method of mainwindow (most of code autogenerated data source wizard):

    private void window_loaded(object sender, routedeventargs e)     {         wpfapplication2.myentities myentities = new wpfapplication2.myentities();         // load data vmyview. can modify code needed.         system.windows.data.collectionviewsource vmyviewviewsource = ((system.windows.data.collectionviewsource)(this.findresource("vmyviewviewsource")));         system.data.objects.objectquery<wpfapplication2.vmyview> vmyviewquery = this.getvmyviewquery(myentities);         var data = vmyviewquery.execute(system.data.objects.mergeoption.appendonly).tolist(); // added tolist() make query execute here         vmyviewviewsource.source = data;     } // gets here fine , loads data 

i can't believe there out of ordinary here, going on , how can rid of problem?