c# - Hyperlink - content binding -

i have textbox user inputs uri. becomes navigateuri property of hyperlink, allowing user click on link open page.

<!-- input textbox --> <textbox x:name="linkbox" width="175" text="{binding path=docref, mode=twoway}" />  <!-- hyperlink --> <textblock>     <hyperlink datacontext="{binding elementname=linkbox}" navigateuri="{binding                 path=text}" requestnavigate="hyperlink_requestnavigate">         <textblock datacontext="{binding elementname=linkbox}"                     text="{binding path=text}" />     </hyperlink> </textblock> 

this works inputting whole (absolute) uri in textbox. however, user wants input 'document.extn' bit of uri, , have application prepend rest of resource (ie, 'http://www.example.com/' bit). how set base part of uri , append document reference (preferably in xaml)? came across hyperlink's baseuri property sounds perfect, unfortunately protected, doesn't work:

<hyperlink datacontext="{binding elementname=linkbox}"             baseuri="http://www.example.com/" navigateuri="{binding path=text}"             requestnavigate="hyperlink_requestnavigate"> 

can assist?

you may able use multibinding join 2 strings need

<hyperlink datacontext="{binding elementname=linkbox}"  requestnavigate="hyperlink_requestnavigate">     <hyperlink.navigateuri>        <multibinding stringformat="{}{0}{1}">            <binding fallbackvalue="http://www.example.com/" />            <binding path="text" />         </multibinding>     </hyperlink.navigateuri> </hyperlink>