使用Except比较2List

你需要覆盖Equal并GetHashCode在你的课堂上.像这样的东西:

public class Animal
{
    public int Id { get; set; }
    public string Name { get; set; }
    public int Age { get; set; }

    public override bool Equals(object obj)
    {
        if (!(obj is Animal))
            return false;
        var p = (Animal)obj;
        return p.Id == Id && p.Name == Name && p.Age == Age;
    }

    public override int GetHashCode()
    {
        return String.Format("{0}|{1}|{2}", Id, Name, Age).GetHashCode();
    }
}

或者使用较新版本的C#,您可以:

public override int GetHashCode() => $"{Id}|{Name}|{Age}".GetHashCode();