c# - Adding Slider values from DataTemplate in ListView -


i created datatemplate containing: textblock , slider (x:name="_score") in horizontal stackpanel. textblock refers new observablecollection, class category contains string textblock text. listview 7 items uses datatemplate, there 7 sliders in window.

every time change value of slider _score, want update textblock total sum of slider's values. different sliders have different values selected user. have event handler valuechanged="_slidscore."

can differentiate sliders 1 add total value each slider? 

<page.resources>         <!-- todo: delete line if key appname declared in app.xaml -->         <x:string x:key="appname">questionnaire</x:string>         <datatemplate x:key="_itemtemplate">             <border borderbrush="gainsboro" borderthickness="4">                 <stackpanel orientation="horizontal">                     <textblock margin="8,0,8,0" fontsize="18" width="200" verticalalignment="center" textwrapping="wrap" text="{binding crit}"/>                     <stackpanel>                                         <slider margin="10,0,10,0" verticalalignment="center" value="0" maximum="5" minimum="0" tickfrequency="1" tickplacement="outside" x:name="_score" width="641" valuechanged="_slidscore"/>                     <stackpanel orientation="horizontal" horizontalalignment="center">                         <textblock verticalalignment="center" text="rating: " fontsize="24"/>                         <textblock verticalalignment="center" margin="10,0,0,0" text="{binding value, elementname=_score}" fontsize="24"/>                     </stackpanel>                 </stackpanel>                 </stackpanel>             </border>         </datatemplate>     </page.resources>   .... in main grid:          <border grid.row="1" borderbrush="red" borderthickness="5">             <textblock text="how have you..." textwrapping="wrap" fontweight="bold" fontsize="20" verticalalignment="center"/>         </border>         <listview x:name="_listview" grid.row="2" itemtemplate="{staticresource _itemtemplate}" selectionmode="none" horizontalcontentalignment="stretch"/>         <textblock grid.row="2" grid.column="1" x:name="_result" fontsize="70"/>  ...  in codebehind file    //list populate textblock in datatemplate  _listview.itemssource = new observablecollection<category>             {                 new category{crit = "1231231231231231231?"},                 new category{crit = "asdfafhadgfjargfjagj?"},                 new category{crit = "qerklhjyahkildfjkladnhjkla?"},                 new category{crit = "13490p76812390-qhjsedhjklg?"},                 new category{crit = "asdfasdgq3e45uq345u?"},                 new category{crit = "q3490u8yq38945yasdjiofhj?"},                 new category{crit = "13406923789045whjioerghjkla?"}             };        class category     {         public string crit { get; set; }     }

i discovered own answer:

    int total = 0;       private void _slidscore(object sender, rangebasevaluechangedeventargs e)     {         total -= (int)e.oldvalue;         total += (int)e.newvalue;         _result.text = total.tostring();     }

_slidscore event handler slider. output int total textblock _result.


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