Call NavigationService from Silverlight UserControl that contains Navigation Frame -

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i have usercontrol contains frame urimapper. rootvisual, loaded when application loaded. (simplified) xaml:

<usercontrol>     <navigation:frame x:name="contentframe" source="/page1">         <navigation:frame.urimapper>             <urimapper:urimapper>                 <urimapper:urimapping uri="" mappeduri="/views/home.xaml"/>                 <urimapper:urimapping uri="/{pagename}" mappeduri="/views/{pagename}.xaml"/>             </urimapper:urimapper>         </navigation:frame.urimapper>     </navigation:frame>  <hyperlinkbutton x:name="page1link" navigateuri="/page1" targetname="contentframe" content="page1"/> <hyperlinkbutton x:name="page2link" navigateuri="/page2" targetname="contentframe" content="page2"/> </usercontrol>

this works great, want add back-button. when user clicks button, want call

navigationservice.goback();

i can call navigationservice pages (page1 , page2), how can call navigationservice 'parent' usercontrol? possible? in usercontrol, navigationservice null.

i either want access navigationservice pages shown in frame, or pass button click event these pages.

i don't want have put button in each page , handle navigation there.

try using 

contentframe.navigate(your_uri);

and 

contentframe.goback();

in parent usercontrol contains navigation frame x:name="contentframe".


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