How to make CHART in ASP.NET MVC 5

==> VIEW
@model IEnumerable<WebAppSatisfactionOfCustomers.Models.T_Transaksi>
    @{
        ViewBag.Title = "Chart";
        Layout = "~/Views/Shared/_Layout.cshtml";

    }

    <h2>GRAFIK PENILAIAN</h2>

    <ul>
        @foreach (var group in Model.GroupBy(item => item.id_poli))
        {

            <li>
               
                @foreach (var it in ViewBag.divisidata)
                {
                    if (int.Parse(group.Key) == it.id_poli)
                    {
                    
                        <h1>@Html.Encode(@it.nama_poli)</h1>
                    }
                }

                @{
            var filePathNamegroup = "~/Images/" + group.Key + ".jpg";


            var chartImageGroup = new Chart(600, 400);
            chartImageGroup.AddTitle("GRAFIK KEPUASAN");
            chartImageGroup.AddLegend("Koresponden", "5 ");
            chartImageGroup.AddSeries(
            name: "" + group.Count(),
            axisLabel: "Name",
            xValue: new[] { "Puas", "Tidak Puas" },
            yValues: new[] { group.Where(kondisi => kondisi.id_kategori.Contains("1")).Count().ToString(), group.Where(kondisi => kondisi.id_kategori.Contains("2")).Count().ToString() });
            chartImageGroup.Save(path: filePathNamegroup);
                }

                <img src="@Url.Content(filePathNamegroup)" alt="Image" />


                <ul>

                    @foreach (var item in group.GroupBy(itempuas => itempuas.id_kategori))
                    {


                        if (item.Key == "1")
                        {
                            <h4>Grafik Kategori Puas</h4>

                            var filePathName = "~/Images/" + group.Key + item.Key + ".jpg";
                            var filename = group.Key + item.Key;

                            var chartImage = new Chart(600, 400);
                            chartImage.AddTitle("GRAFIK KATEGORI PUAS (" + item.Count() + " dari " + group.Count() + ")");
                            chartImage.AddSeries(
                                    name: "Employee",
                                    axisLabel: "Name",
                                    xValue: new[] { "Waktu Pelayanan", "Cara Pelayanan", "Keramahan", "Komunikasi", "Waktu Tunggu" },
                                    yValues: new[] { @item.Where(kondisi => kondisi.id_pertanyaan.Contains("1")).Count().ToString(), @item.Where(kondisi => kondisi.id_pertanyaan.Contains("2")).Count().ToString(), @item.Where(kondisi => kondisi.id_pertanyaan.Contains("3")).Count().ToString(), @item.Where(kondisi => kondisi.id_pertanyaan.Contains("4")).Count().ToString(), @item.Where(kondisi => kondisi.id_pertanyaan.Contains("5")).Count().ToString() });
                            chartImage.Save(path: filePathName);

                            <img src="@Url.Content(filePathName)" alt="Image" />



                        }
                        else
                        {

                            var filePathName = "~/Images/" + group.Key + item.Key + ".jpg";

                            var chartImage = new Chart(600, 400);
                            chartImage.AddTitle("GRAFIK KATEGORI TIDAK PUAS (" + item.Count() + " dari " + group.Count() + ")");
                            chartImage.AddSeries(
                                    name: "Employee",
                                    axisLabel: "Name",
                                    xValue: new[] { "Waktu Pelayanan", "Cara Pelayanan", "Keramahan", "Komunikasi", "Waktu Tunggu" },
                                    yValues: new[] { @item.Where(kondisi => kondisi.id_pertanyaan.Contains("1")).Count().ToString(), @item.Where(kondisi => kondisi.id_pertanyaan.Contains("2")).Count().ToString(), @item.Where(kondisi => kondisi.id_pertanyaan.Contains("3")).Count().ToString(), @item.Where(kondisi => kondisi.id_pertanyaan.Contains("4")).Count().ToString(), @item.Where(kondisi => kondisi.id_pertanyaan.Contains("5")).Count().ToString() });
                            chartImage.Save(path: filePathName);


                            <h4>Grafik Kategori Tidak Puas</h4>

                            <img src="@Url.Content(filePathName)" alt="Image" />

                        }


                    }

                </ul>
            </li>

        }
    </ul>

===> CONTROLER

public ActionResult Chart()
{
ViewBag.divisidata = db.divisi;
return View(db.transaksi.ToList());

}