c# - How to get the element in the control template in Silverlight? -


i want element in control template code behind.

in xaml below want border element "btnborder" , change color red other color code behind.

<window x:class="wpfapplication4.mainwindow"         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"         title="mainwindow" height="350" width="525">     <grid>          <stackpanel                name ="st"                 margin="0,3,0,3"                 grid.row="4"                 orientation="horizontal">             <button name="btn" height="22" margin="0,0,25,0">                 <button.template x:uid="dd">                     <controltemplate x:name="tmp" targettype="button">                         <border x:name="btnborder" background="red">                             <contentpresenter verticalalignment="center" horizontalalignment="center" />                                                     </border>                     </controltemplate>                 </button.template>                  test button             </button>          </stackpanel>       </grid> </window>

i have tried various methods

gettemplatechild("btnborder") object o = template.findname("btnborder", this.btn);

but these methods returning null.

please let me know doing wrong or correct way access template child code behind?

you can set borderbrush of button , bind borderbrush of border control in controltemplate.

so when set borderbrush button code behind reflect underlying binding , on border control in controltemplate.

<page.resources>     <style x:key="mybuttonstyle" targettype="button">         <setter property="template">             <setter.value>                 <controltemplate targettype="button">                     <border x:name="btnborder"                             borderbrush="{templatebinding borderbrush}"                              borderthickness="{templatebinding borderthickness}"                             background="{templatebinding background}">                         <contentpresenter verticalalignment="center" horizontalalignment="center"/>                                                 </border>                 </controltemplate>             </setter.value>         </setter>     </style> </page.resources>

this how can apply style

<stackpanel>  <button style={staticresource mybuttonstyle} name="btn1" content="test button 1"          borderbrush="red"/>  <button style={staticresource mybuttonstyle} name="btn2" content="test button 2"          borderbrush="green"/>  </stackpanel>

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