Linq综合选择

Question

我有以下代码：

public class Draw
{
    public int DrawId { get; set; }         
    public virtual ICollection<Figure> Figures { get; set; }

}
public class Figure { 
    public Type type { get; set; } 
    public double Area { get; set; }     
}

public enum Type { Square = 0, Triangle = 1, Circle = 2}

如果我有对象Draw的列表，如何进行linq查询以选择至少两个图形且面积至少5种以上的至少两种不同类型的所有Draw。

Answer 1

var query = draws.Where(draw => draw.Figures
    .Where(figure => figure.Area > 5)
    .Select(figure => figure.type)
    .Distinct()
    .Count() >= 2);