从Linq查询在LiveCharts2中构建LiveCharts2

Question

我试图在我的WPF应用程序中看到PieCharts。有一个例子，它似乎运行良好。但是，我试图从linq查询中进行同样的操作，并且无法理解如何解决该方程。

下面是一个示例：

Xaml部分：

<lvc:PieChart x:Name="PieChart" LegendPosition="Right" Series="{Binding OnLoaded}" InitialRotation="-90"></lvc:PieChart>

和C#代码：

private async void OnLoaded()
        {
                IEnumerable<double> a = new List<double> { 1 };
                IEnumerable<double> b = new List<double> { 0 };
                IEnumerable<double> c = new List<double> { 0 };

                IEnumerable<ISeries> Series = new List<ISeries>
                {
                    new PieSeries<double> { Values = a, Name = "a" },
                    new PieSeries<double> { Values = b, Name = "b" },
                    new PieSeries<double> { Values = c, Name = "c"  }
                };
                LivePieChart3.Series = Series;
            }
        }

那么我也试图从linq做同样的事情，但是我认为这是完全错误的？：

private void InitializePieChart()
{
  List<ISeries> projectNumbers = this.Projects.Select(x => new List<ISeries>
  {
   new PieSeries<double> 
   {
    Values = x.Revenue,
    Name = x.ProjectName,
   }
  });

  this.Series = new ObservableCollection<ISeries>(projectNumbers);
}

如何在new PieSeries<double>之后创建一个新的new List<ISeries>

这是我的模型：

  public class ProjectModel
  {
    public Guid Id { get; set; }
    public string ProjectName { get; set; }
    public string ProjectNumber { get; set; }
    public double Revenue { get; set; }
    public DateTime CreationDate { get; set; }

    public virtual ICollection<TaskModel> Tasks { get; set; }
  }

ViewModel项目：

private ObservableCollection<ProjectModel> projects;
public ObservableCollection<ProjectModel> Projects
{
  get => this.projects;
  set
  {
    this.projects = value;
    this.OnPropertyChanged();
  }
}

以下是LiveCharts2项目：https://github.com/beto-rodriguez/LiveCharts2

编辑：

关于阿什的建议，我收到以下意见：

​

​

Answer 1

private void InitializePieChart()
{
    IEnumerable<ISeries> projectNumbers = this.Projects.Select(x => 
    new PieSeries<double> 
    {
        Values = new List<double> { x.Revenue },
        Name = x.ProjectName,
    });

    this.Series = new ObservableCollection<ISeries>(projectNumbers);
}