c# - How to get Text in GridView when selected? -

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i'm working on project in i'm setting content using json binding in grid view want text of item when selected. xaml code:

 <gridview itemssource="{binding}"   horizontalalignment="center" margin="0,10,0,0" x:name="datalist" verticalalignment="center" selectionmode="none" selectionchanged="datalist_selection">         <gridview.itemtemplate>             <datatemplate>                 <stackpanel width="450" height="300">                     <image source="{binding top}"  margin="0,0,0,0" stretch="none" />                     <textblock x:name="title" text="{binding title}"   foreground="black" horizontalalignment="center" fontfamily="assets/font/mixbrush.ttf#mixbrush"  fontweight="bold" fontsize="50" margin="0,10,0,0"  />                 <image source="{binding bottom}" margin="0,0,0,0" stretch="none" />                     <textblock  text="{binding first}"   foreground="black" horizontalalignment="center"  fontfamily="assets/font/comfortaa_regular.ttf#comfortaa"   fontsize="20" margin="0,50,0,0"  />                     <textblock text="{binding second}"   foreground="black" horizontalalignment="center"  fontfamily="assets/font/comfortaa_regular.ttf#comfortaa"   fontsize="20" margin="0,0,0,0"  />                     <textblock text="{binding third}"   foreground="black" horizontalalignment="center"  fontfamily="assets/font/comfortaa_regular.ttf#comfortaa"   fontsize="20" margin="0,0,0,0"  />                 </stackpanel>             </datatemplate>         </gridview.itemtemplate>     </gridview>

here want text of "title" programmatically. please share knowledge me. :-)
********************** thank ************************

on code use:

title.text;

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