高图只显示一个点 - mvc5

Question

我正在尝试从我的数据库填充高图表线图。

我的约会模式：

[Display(Name = "Date")]
[DataType(DataType.Date)]
[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:dd/MM/yyyy}")]
public DateTime Date { get; set; }

[Display(Name = "Left IOP")]
public int IOPLeft { get; set; }

[ForeignKey("Patient")]
public Guid PatientId { get; set; }
public virtual Patient Patient { get; set; }

我创建了以下控制器：

public ActionResult IOPLeftChart(Guid? id) //
{
    var dataLeft = (from d in db.Appointments
                    where d.PatientId == id
                    select new 
                    {
                        Date = d.Date,
                        IOPLeft = d.IOPLeft,
                    }).ToList();

    var xSeries = dataLeft.Select(a => a.Date.ToString("dd/MM/yyyy")).ToArray();
    var ySeries = dataLeft.Select(a => new object[]{a.IOPLeft}).ToArray();


    // instantiate an object  of the high charts type
    var chart = new Highcharts("chart")
        // define the type of chart
            .InitChart(new Chart { DefaultSeriesType = ChartTypes.Line })
        //overall title of the chart
            .SetTitle(new Title { Text = "Left IOP" })
        //small label below the main title
            .SetSubtitle(new Subtitle { Text = "LeftIOP" })
        // load the x values
            .SetXAxis(new XAxis { Categories = xSeries })
        // set the y title
            .SetYAxis(new YAxis { Title = new YAxisTitle { Text = "IOP" } })
                .SetTooltip(new Tooltip
                {
                    Enabled = true,
                    Formatter = @"function() { return '<b>'+this.series.name +'</b><br/>'+this.x+': '+this.y;}"
                })
                    .SetPlotOptions(new PlotOptions
                    {
                        Line = new PlotOptionsLine
                        {
                            DataLabels = new PlotOptionsLineDataLabels
                            {
                                Enabled = true
                            },
                            EnableMouseTracking = false
                        }
                    })
        //load y values
    .SetSeries(new[]
    {
        new Series {Name = "Patient", 
        Data = new Data(new object[] {ySeries})},

    });

我的观点：

@{
ViewBag.Title = "IOPLeftChart";
}

<h2>IOPLeftChart</h2>

@model DotNet.Highcharts.Highcharts

<p> My Chart </p>
@(Model)

然而，当我运行应用程序时，它只显示一行，它应该显示一个3点的行。如下：

我不知道哪里出错了，任何建议都会非常感激。感谢