c#将列表映射到ILookup<；内部，租户>；

基于以下类

    public class User
    {
        public int Id { get; set; }
        public List<TenantUser> TenantUsers { get; set; }
    }


    public class TenantUsers
    {
        public int UserId { get; set; }
        public User User { get; set; }
        public int TenantId { get; set; }
        public Tenant Tenant { get; set; }
    }

    public class Tenant
    {
        public int Id { get; set; }
        public string Name { get; set; }
        public List<TenantUser> TenantUsers { get; set; }
    }

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上面是我走了多远。这将返回我正在查找的

ILookup（）
您必须像这样从结果中选择
Tenant

var userIds = new int[] {1, 2,3,5};
var tenantUsers = new List<TenantsUsers>();

var tenants = 
tenantUsers
.Where(m => userIds.Contains(m.UserId))
.ToLookup(x => x.UserId, y => y.Tenant); 

var userIds=newint[]{1,2,3,5}；
var tenantUsers=新列表（）；
var租户=
租户
.Where（m=>UserId.Contains（m.UserId））
.ToLookup（x=>x.UserId，y=>y.Tenant）；


var userIds = new int[] {1, 2,3,5};
var tenantUsers = new List<TenantsUsers>();

var tenants = 
tenantUsers
.Where(m => userIds.Contains(m.UserId))
.ToLookup(x => x.UserId, y => y.Tenant);