.net - WPF CustomControl pass through of datatemplate to listbox not working -

i learning custom controls , making autocompletetextbox example. creating custom control wpf project (v 4.5 vb.net 4.5) , using textbox base class. added popup, listbox, , button control. have dependency property in custom control datatemplate of listbox, can't datatemplate pssed listbox.

here dependency property datatemple:

#region "dependency properties -- itemtemplate"     public property itemtemplate datatemplate                     return getvalue(itemtemplateproperty)         end         set(byval value datatemplate)             setvalue(itemtemplateproperty, value)         end set     end property     public shared readonly itemtemplateproperty dependencyproperty = dependencyproperty.register( _                         "itemtemplate", gettype(datatemplate), gettype(autocompletetextbox), _                         new frameworkpropertymetadata(nothing, frameworkpropertymetadataoptions.none, _                         new propertychangedcallback(addressof onitemtemplatechanged)))      shared sub onitemtemplatechanged(d dependencyobject, e dependencypropertychangedeventargs)         dim actb autocompletetextbox = trycast(d, autocompletetextbox)          if actb isnot nothing             dim temptemplate datatemplate = trycast(e.newvalue, datatemplate)             if temptemplate isnot nothing                 actb.itemtemplate = temptemplate             end if         end if      end sub #end region 

here xaml declaring small text of usercontrol:

<window x:class="mainwindow"     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"     xmlns:krisis="clr-namespace:krisis.controls;assembly=krisis.controls"     title="mainwindow" height="350" width="525" x:name="mywindow"     datacontext="{binding relativesource={relativesource self}}">     <window.resources>         <datatemplate x:key="collectiontemplate">             <border borderbrush="green" borderthickness="2" cornerradius="5" padding="5,5,5,2">                 <grid>                     <grid.columndefinitions>                         <columndefinition width="auto"/>                         <columndefinition/>                     </grid.columndefinitions>                     <grid.rowdefinitions>                         <rowdefinition/>                         <rowdefinition/>                     </grid.rowdefinitions>                     <textblock text="object:  "/>                     <textblock grid.column="1" text="{binding name}"/>                     <textblock grid.row="1" text="{binding id}"/>                     <textblock grid.column="1" grid.row="1" text="{binding job}"/>                 </grid>             </border>         </datatemplate>     </window.resources>     <grid>         <krisis:autocompletetextbox itemssource="{binding collection}"                                      itemtemplate="{staticresource collectiontemplate}"                                      maxmimummatches="15"                                      minimumfiltercharacters="1"                                      displaypath="name"                                     width="497" minheight="35" fontsize="18" horizontalalignment="center" verticalalignment="center" margin="10,41,10,243" />     </grid> </window> 

my problem: when use declare itemtemplate, not getting applied. listbox displays object type name each object in listbox, not of object property values.

can me use dependency property pass through datatemplate of listbox inside custom control.

thanks in advance

okay, chnaged assign itemtemplate following , works:

#region "apply template"     public overrides sub onapplytemplate()         mybase.onapplytemplate()          '' if template not nothing initialize controls , wire event handlers         if me.template isnot nothing              initializelistbox()             if resultslistbox isnot nothing                 onitemsourcechanged(itemssource)                 addhandler resultslistbox.keydown, addressof resultlistbox_keydown                 addhandler resultslistbox.selectionchanged, addressof resultlistbox_selectionchanged                 resultslistbox.itemtemplate = itemtemplate                 resultslistbox.itemssource = itemssource             end if         end if     end sub #end region