WPF XAML - How to bind a DataTrigger to a ComboBox value -


i have listview takes in item , displays combobox , button.

i dynamically show or hide button based on value of combobox being equal "blahblahblah".

currently inside of <gridview> looks this:

<gridviewcolumn header="property" width="160">   <gridviewcolumn.celltemplate>       <datatemplate>          <combobox x:name="propertycombobox"                   itemssource="{binding path=arisingpropertylist, mode=twoway}"                   selectedvalue="{binding arisingproperty.propertyname,                   updatesourcetrigger=propertychanged}"                   selectedvaluepath="propertyname" width="140" >           </combobox>         </datatemplate>    </gridviewcolumn.celltemplate> </gridviewcolumn>                                            <gridviewcolumn width="30" >                                       <gridviewcolumn.celltemplate>                                              <datatemplate>          <button content="...">             <button.style>                <style targettype="{x:type button}">                  <style.triggers>                    <datatrigger binding="{binding path=selectedvalue.propertyname,                      elementname=propertycombobox}" value="hidebutton">                         <setter property="visibility" value="blahblahblah" />                    </datatrigger>                  </style.triggers>               </style>            </button.style>         </button>                                                      </datatemplate>    </gridviewcolumn.celltemplate>  </gridviewcolumn>

can point out i'm going wrong? i'm getting is:

system.windows.data error: 4 : cannot find source binding reference 'elementname=propertycombobox'. bindingexpression:path=selectedvalue.propertyname; dataitem=null; target element 'button'; target property 'notarget' (type 'object')

you have bounded selectedvalue property source class, bind directly property instead of combobox. issue combobox , button lies in different visual trees can't bind using elementname.

<datatrigger binding="{binding path=arisingproperty.propertyname}"              value="hidebutton">    <setter property="visibility" value="collapsed" /> </datatrigger>

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