var  roles = db.Roles.ToList（）; 
 RoleName = roles.Where（j = >  j.Id == MS.Roles.FirstOrDefault（）。RoleId）.Select（a = >  a.Name）.FirstOrDefault（）

有更好的解决方案吗？！

hi.

ApplicationDbContext db = new ApplicationDbContext();
var model = db.Users.Select(MS => new UserInfo
           {
               User = MS.name + " " + MS.family,
               UserId = MS.Id,
               roleId = MS.Roles.FirstOrDefault().RoleId,
               RoleName = "???";
}).ToList();

RoleName?

var roles = db.Roles.ToList();
RoleName = roles.Where(j => j.Id == MS.Roles.FirstOrDefault().RoleId).Select(a => a.Name).FirstOrDefault()

is there better solution?!