c# - Binding based on Condition -

i have been developing simple application in c# uses kinect hand pointer controls.

in application have more 6 canvases,in every canvas have embedded kinect region. bind kinectsensor in mainwindow.cs kinectregions in canvases.

<canvas name=" canvas1" visibility="visible"> <k:kinectregion kinectsensor="{binding kinectsensor}" name="kinectregioncp"> // controls </canvas> <canvas name=" canvas1" visibility="hidden"> <k:kinectregion kinectsensor="{binding kinectsensor}" name="kinectregionap"> // controls </canvas> .........// more canvases 

the problem ,even-though 1 canvas visible @ time,the cpu usage burst 90% other canvases actively using kinect region.

is there way bind sensor when particular canvas visible?

you set datacontext based on visibility of control. here example on canvas. if have other controls on canvas databound need apply style k:kinectregion.

<canvas name=" canvas1" visibility="visible"> <canvas.style>     <style targettype="canvas">         <style.triggers>             <trigger property="visibility" value="visible">                 <setter property="datacontext" value="{binding}"/>             </trigger>             <trigger property="visibility" value="hidden">                 <setter property="datacontext" value="{x:null}"/>             </trigger>         </style.triggers>     </style> </canvas.style> <k:kinectregion kinectsensor="{binding kinectsensor}" name="kinectregioncp">     // controls