xaml - Unable to apply menu flyout to listview -

i unable apply menu flyout listview. assume app crashes once app attempts load specified xaml.

my code below:

xaml:

<listview x:name="contactlist" scrollviewer.verticalscrollbarvisibility="visible"          itemssource="{binding selectedcategory.contacts}"          selecteditem="{binding selectedcontact, mode=twoway, converter={staticresource nulltoboolconverter}}"          displaymemberpath="name">               <listviewitem>         <interactivity:interaction.behaviors>             <core:eventtriggerbehavior eventname="holding">                 <behaviors:movecontactbehavior />             </core:eventtriggerbehavior>         </interactivity:interaction.behaviors>          <flyoutbase.attachedflyout>             <menuflyout>                 <menuflyoutitem text="family"                                      command="{binding movecommand}" commandparameter="{binding relativesource={relativesource self}, path=text}" />                 <menuflyoutitem text="friend"                                      command="{binding movecommand}" commandparameter="{binding relativesource={relativesource self}, path=text}" />                 <menuflyoutitem text="business"                                      command="{binding movecommand}" commandparameter="{binding relativesource={relativesource self}, path=text}" />             </menuflyout>         </flyoutbase.attachedflyout>     </listviewitem> </listview> 

behavior:

public class movecontactbehavior : dependencyobject, iaction {     public object execute(object sender, object parameter)     {         var senderelement = sender frameworkelement;         flyoutbase flyoutbase = flyoutbase.getattachedflyout(senderelement);          flyoutbase.showat(senderelement);          return null;     } } 

i fixed it.

i removed displaymemberpath listview , added datatemplate. works now.

<textblock text="{binding displayname}"> <interactivity:interaction.behaviors>     <core:eventtriggerbehavior eventname="holding">         <behaviors:movecontactaction />     </core:eventtriggerbehavior> </interactivity:interaction.behaviors>  <flyoutbase.attachedflyout>     <menuflyout>         <menuflyoutitem text="family" command="{binding elementname=grid, path=datacontext.movecommand}" commandparameter="{binding relativesource={relativesource self}, path=text}" />         <menuflyoutitem text="friend" command="{binding elementname=grid, path=datacontext.movecommand}" commandparameter="{binding relativesource={relativesource self}, path=text}" />         <menuflyoutitem text="business" command="{binding elementname=grid, path=datacontext.movecommand}" commandparameter="{binding relativesource={relativesource self}, path=text}" />         <menuflyoutitem text="others" command="{binding elementname=grid, path=datacontext.movecommand}" commandparameter="{binding relativesource={relativesource self}, path=text}" />     </menuflyout> </flyoutbase.attachedflyout> </textblock> 

this implemented app.