c# - use Line chart from highchart -

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i going use line chart highchart library in .netcore c# project. new matter. following highcharts.net instruction looks easy. have copied 

<highchart:linechart id="hcvendas" runat="server" width="500" height="350" />

in about.cshtml , left below code in controller:

    public iactionresult about()     {         //defining axis          hcvendas.yaxis.add(new yaxisitem { title = new title("faturamento") });         hcvendas.xaxis.add(new xaxisitem { categories = new[] { "1994", "1995", "1996", "1997", "1998", "1999", "2000", "2001", "2002" } });          //new data collection         var series = new collection<serie>();         series.add(new serie { data = new object[] { 400, 435, 446, 479, 554, 634, 687, 750, 831 } });          //bind          hcvendas.datasource = series;         hcvendas.databind();         if (user.isinrole("adminstrators"))         viewdata["message"] = "your application description page.";          return view();     }

but receive error "error cs0103 name 'hcvendas' not exist in current context" idea highly appreciated.





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