c# - Modify data template properties of listbox in code behind -

i have listbox in xaml per code shown below.

<listbox name="mylistbox">     <listbox.itemtemplate>     <datatemplate>        <image source="{binding path=image}" width="175" height="175" verticalalignment="center" horizontalalignment="center"/>     </datatemplate>   </listbox.itemtemplate> </listbox> 

at runtime based on condition, want change height , width properties value using code behind. please can guide me in achieving desired functionality.

many thanks

i think easiest way achieve bind width , height of image 2 properties. if want change width , height of images can use 2 properties in code behind , if want able individually same bind against properties in collection items.

<listbox name="mylistbox">      <listbox.itemtemplate>          <datatemplate>              <image source="{binding path=image}"                    width="{binding elementname=mywindow,                                    path=listboxtemplatewidth}"                    height="{binding elementname=mywindow,                                     path=listboxtemplateheight}"                    verticalalignment="center"                    horizontalalignment="center"/>          </datatemplate>      </listbox.itemtemplate>  </listbox>  

and in code behind define 2 properties

private double m_listboxtemplateheight; public double listboxtemplateheight {         {         return m_listboxtemplateheight;     }     private set     {         m_listboxtemplateheight = value;         onpropertychanged("listboxtemplateheight");     } } private double m_listboxtemplatewidth; public double listboxtemplatewidth {         {         return m_listboxtemplatewidth;     }     private set     {         m_listboxtemplatewidth = value;         onpropertychanged("listboxtemplatewidth");     } }  if (somecondition == true) {     listboxtemplateheight = 200;     listboxtemplatewidth = 200; } 

this way, listboxitems increase/decrease in size width/height of images.