binding - WPF Styles and Tooltips Question -


i have style using make dynamic tooltips on text boxes so.

<style targettype="{x:type textbox}">   <setter property="minwidth" value="100"/>   <style.triggers>     <trigger property="validation.haserror" value="true">        <!-- item of interest -->       <setter property="tooltip">         <setter.value>           <multibinding converter="{staticresource errormessageconverter}">             <binding relativesource="{relativesource self}" path="tag"/>           </multibinding>         </setter.value>       </setter>      </trigger>   </style.triggers> </style>

this works well, if want use more complex tooltip can't figure out how bind 'tag' anymore converter value. example;

... <setter property="tooltip">   <setter.value>     <stackpanel>       <textblock>         <textblock.text>           <multibinding converter="{staticresource errormessageconverter}">              <!-- item of interest -->             <binding relativesource=" goes here?? "/>           </multibinding>         </textblock.text>       </textblock>       <image/>     </stackpanel>   </setter.value> </setter> ...

i have tried several flavors of 'findancestor' , not relative source, can't work. ideas??

update: 12-29-2010 : here correct code, answer provided our friend goblin below. works perfectly!

... <setter property="tooltip">   <setter.value>     <!-- item of interest -->       <tooltip datacontext="{binding path=placementtarget, relativesource={x:static relativesource.self}}">       <stackpanel>         <image/>         <textblock>           <textblock.text>             <multibinding converter="{staticresource errormessageconverter}">               <binding path="tag"/>             </multibinding>           </textblock.text>         </textblock>       </stackpanel>     </tooltip>   </setter.value> </setter> ...

see karl shifflett full explanation of how inherit datacontext of 'owning' control tooltip: http://karlshifflett.wordpress.com/2007/12/29/wpf-sample-series-data-binding-in-tooltip/

it isn't textbook stuff :)


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