WPF webbrowser anchor onclick event c# -

i loading page in webbrowser control & need capture event in control when anchor element clicked.

what trying execute piece of code, before link opens webpage dialog box.

this element on webpage

<a id="saveexpression" href="#end-result" class="buildertoolbar save" title="save expression"><span class="displace"></span></a> 

i have tried couple of things far.

iserviceprovider serviceprovider = (iserviceprovider)_webbrowserctrl.document;                     guid serviceguid = sid_swebbrowserapp;                     guid iid = typeof(shdocvw.iwebbrowser2).guid;                     shdocvw.iwebbrowser2 mywebbrowser2 = (shdocvw.iwebbrowser2)serviceprovider.queryservice(ref serviceguid, ref iid);                       shdocvw.dwebbrowserevents_event wbevents = (shdocvw.dwebbrowserevents_event)mywebbrowser2;                     wbevents.newwindow += new shdocvw.dwebbrowserevents_newwindoweventhandler(onwebbrowsernewwindow); 

the above seems fire when there 'newwindow', link opens webpage dialog box.

i have tried

                        mshtml.htmldocument doc;                         doc = (mshtml.htmldocument)mywebbrowser2.document;                         mshtml.htmldocumentevents2_event ievent;                         ievent = (mshtml.htmldocumentevents2_event)doc;                         ievent.onclick += new htmldocumentevents2_onclickeventhandler(ievent_onclick);      bool ievent_onclick(ihtmleventobj pevtobj)     {         // code before webpage dialog box opened.         return true;     } 

this captures every 'onclick' event, loses direction of click event does.

all want capture click on 1 particular button, perform action, before button opens webpage dialog. achieve onclick doesnt continue open dialog box, page has 'textarea' loses focus when onclick event triggered.

<textarea name="ctl00$contentforexpressions$txtexpression" id="ctl00_contentforexpressions_txtexpression" onkeyup="commonui.getposition(event);expressioncurrentstate.updatestatusflag();" onmouseup="commonui.getposition(event)" onpaste="return commonui.maxlengthpaste(this,&quot;160&quot;);" class="expressionbuildertextbox" onchange="expressioncurrentstate.updatestatusflag()" onfocus="commonui.disabletoolitems()" type="text" onkeypress="commonui.disabletoolitems(this);" onmousedown="commonui.getposition(event)"></textarea>    

is there neater or rather simpler way of achieving this? or missing something?

as long return true in ievent_onclick, should process event further. anyway, working solution is:

private bool ievent_onclick(ihtmleventobj pevtobj) {     if (pevtobj.srcelement != null)     {         var parent = pevtobj.srcelement.parentelement;         if (parent != null && parent.id == "saveexpression")         {             messagebox.show("bingo!");             return false;         }     }     return true; }