longlistselector - Windows 8.1 phone app ExtendedListView.GroupStyle not working -

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i using extendedlistview in application need pool refresh option.

i have installed extendedlistview 0.0.5.5 installing nuget package: install-package extendedlistview

now want sticky header in listview.

so able in simple list view below code.

<listview isholdingenabled="true"     itemssource="{binding source={staticresource addressgroups}}"     itemtemplate="{staticresource addrbookitemtemplate}"     continuumnavigationtransitioninfo.exitelementcontainer="true">     <listview.groupstyle>         <groupstyle hidesifempty="true" headertemplate="{staticresource addrbookgroupheadertemplate}"/>     </listview.groupstyle> </listview>

but same thing not working in extendedlistview.

<ctrl:extendedlistview isholdingenabled="true"         itemssource="{binding source={staticresource addressgroups}}"         itemtemplate="{staticresource addrbookitemtemplate}"         continuumnavigationtransitioninfo.exitelementcontainer="true"  >     <ctrl:extendedlistview.groupstyle>         <groupstyle headertemplate="{staticresource addrbookgroupheadertemplate}" />     </ctrl:extendedlistview.groupstyle> </ctrl:extendedlistview>

i have used same headertemplate in both code below:

<datatemplate x:key="addrbookgroupheadertemplate">     <border background="transparent" padding="5">         <border background="red" borderbrush="red" borderthickness="2" width="80"                  height="62" margin="0,0,18,0" horizontalalignment="left">             <textblock text="{binding key}" foreground="white" fontsize="48" padding="6"                          horizontalalignment="left" verticalalignment="center"/>         </border>     </border> </datatemplate>

please guide me asap.

thanks in advance.


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