How to plot chart for a given ID

Question

User-1557173817 posted

Hello, i want to plot a chart for a giving ID but was some error, this my code;

@{
    var db = Database.Open("StarterSite");
     var  ID = Request.QueryString["ID"];
    var data = db.Query("SELECT Subject, Grade FROM resulta WHERE SID=@0");
    var myChart = new Chart(width: 1100, height: 400)
        .AddTitle("Student Chart")
       .AddSeries("Default",chartType: "Column",
    xValue:  data, xField: "Subject",
    yValues:data, yFields: "Grade", ID)
        .Write();
}