c# - LINQ GroupBy 不对结果进行分组

Question

我正在尝试按电子邮件属性对常见对象列表进行分组，但没有得到预期的结果。

var users = new List<Profile>
            {
                new SharePointProfile
                {
                    Id = 1,
                    LoginName = "Login1",
                    Title = "Login1 SharePoint",
                    Email = "Login1@sharepoint.com",
                    IsSiteAdmin = false
                },
                new SharePointProfile
                {
                    Id = 2,
                    LoginName = "Login2",
                    Title = "Login2 SharePoint",
                    Email = "Login2@sharepoint.com",
                    IsSiteAdmin = true
                },
                new Auth0Profile
                {
                    Email = "Login2@sharepoint.com",
                    Name = "Login2 SharePoint Auth0"
                },
                new Auth0Profile
                {
                    Email = "test@test.com",
                    Name = "Test User Auth0"
                }
            };

var userGroups = users.GroupBy(m => m.Email)

我希望看到三组:

• 第 1 组 - Login1@sharepoint.com - 1 个 SharePointProfile 对象
• 第 2 组 - Login2@sharepoint.com - 1 个 SharePointProfile 对象和 1 个 Auth0Profile 对象
• 第 3 组 - test@test.com - 1 个 Auth0Profile 对象

我在这里做错了什么？

public abstract class Profile : IEquatable<Profile>
    {
        public string Name { get; set; }
        public string Email { get; set; }

        public bool Equals(Profile other)
        {
            return this.Email == other.Email;
        }
    }

    public class Auth0Profile : Profile
    {
        public new string Email { get; set; }
        public new string Name { get; set; }
        public string Connection { get; set; }
        public string Password { get; set; }
        public bool VerifyEmail { get; set; }
    }

    public class SharePointProfile : Profile
    {
        public int Id { get; set; }
        public string LoginName { get; set; }
        public string Title { get; set; }
        public new string Email { get; set; }
        public bool IsSiteAdmin { get; set; }
    }

Answer 1

问题是您的列表中有 Profile 类型的对象。但是在您对对象的定义中，您为每个对象创建了称为电子邮件的新属性。 linq 查看未使用的属性。