c# - WPF how to detect listviewitem has been selected -


i have datatemplate listview control, contains few textblocks , button. want button visible when item selected. here's datatemplate code:

<listview.itemtemplate>                             <datatemplate>                                 <grid background="aliceblue">                                     <grid.columndefinitions>                                         <columndefinition width="300" />                                         <columndefinition width="*" />                                         <columndefinition width="90" />                                     </grid.columndefinitions>                                      <textblock horizontalalignment="left" margin="10,0,10,0"                                             verticalalignment="center" fontfamily="verdana" fontsize="16"                                             fontweight="black" grid.column="0" text="{binding name}"/>                                      <stackpanel orientation="horizontal" horizontalalignment="center" grid.column="1">                                         <textblock fontfamily="verdana" fontsize="10" grid.column="1"                                            verticalalignment="center" horizontalalignment="center"                                            text="number of chapters: " />                                         <textblock fontfamily="verdana" fontsize="12" grid.column="1"                                            verticalalignment="center" horizontalalignment="center"                                            text="{binding chapterscount}" />                                     </stackpanel>                                      <button horizontalalignment="center" height="50" width="80" content="read"                                          grid.column="2" visibility="hidden" click="button_click_3" name="readbutton"/>                                  </grid>                             </datatemplate>                         </listview.itemtemplate>

how can that?

you can achieve datatrigger in datatemplate check isselected property of templated parent:

<listview.itemtemplate>     <datatemplate>         .....              <button horizontalalignment="center" height="50"                     width="80" content="read"                      grid.column="2" visibility="hidden" name="readbutton"/>          </grid>         <datatemplate.triggers>             <datatrigger binding="{binding isselected,                          relativesource={relativesource mode=templatedparent}}"                          value="true">                 <setter targetname="readbutton" property="visibility"                         value="visible"/>             </datatrigger>         </datatemplate.triggers>     </datatemplate> </listview.itemtemplate>

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