在 ASP.NET MVC 视图（剃刀代码）中制作图表时“对象引用未设置为对象的实例”

Question

I tried adding a pie chart in my view using ASP.NET MVC and I am getting an error

Object reference not set to an instance of an object

at line 4 in the code where I create a new chart.

Here is my code in the view:

@model ProjectViewModel
@{
    ViewBag.Title = "DashBoard";
    Chart myChart = new Chart(width: 600, height: 400)
        .AddTitle("Projects")
        .AddSeries("Default", chartType: "Pie",
            xValue: Model.Names, xField: "Name",
            yValues: Model.Values, yFields: "Sales")
        .Write();
}

Can somebody please tell me the solution?

Answer 1

This error you will get once the x or y values is null make sure you have values in x and y