wpf - Help me put event trigger for controls of type Expander! -

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hello im trying this

  allrooms = remote.getallrooms();         (int = 0; < allrooms.count; a++) {             expander ex = new expander();             ex.expanded += expander1_expanded;             ex.width = 254;             ex.name = ("expander" + a);             ex.verticalalignment = system.windows.verticalalignment.stretch;             ex.horizontalalignment = system.windows.horizontalalignment.stretch;             ex.header = allrooms[a].nome;             wrappanel panel = new wrappanel();             panel.opacity = 1;             panel.width = 254;             (int b = 0; b < allusers.count; b++) {                 system.windows.controls.label lbl = new system.windows.controls.label();                 lbl.content = allusers[b].nick;                 lbl.width = 127;                 panel.children.add(lbl);             }             ex.content = panel;             canvas.settop(ex, (30 * a));             canvasleft.children.add(ex);         }         mytimer.stop();

and objective add event trigger expanders created, in xaml or c#.

    <canvas.triggers>         <eventtrigger routedevent="expander.expanded" sourcename="expander">             <eventtrigger.actions>                 <beginstoryboard>                     <storyboard>                         <doubleanimation from="0" to="1" duration="0:0:0.25" storyboard.targetname="listbox" storyboard.targetproperty="(frameworkelement.layouttransform).(scaletransform.scaley)"/>                     </storyboard>                 </beginstoryboard>             </eventtrigger.actions>         </eventtrigger>     </canvas.triggers>

something have errors , need x:type expander created expanders in canvas.

can me?

try like:

<canvas.resources>     <style targettype="expander">         <style.triggers>         <eventtrigger routedevent="expander.expanded">             <eventtrigger.actions>                 <beginstoryboard>                     <storyboard>                         <doubleanimation from="0" to="1" duration="0:0:0.25" storyboard.targetname="listbox" storyboard.targetproperty="(frameworkelement.layouttransform).(scaletransform.scaley)"/>                     </storyboard>                 </beginstoryboard>             </eventtrigger.actions>         </eventtrigger>         </style.triggers>     </style> </canvas.resources>

if placed in resources style should applied expanders because of targettype.


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