AutoMapper-如何映射复杂对象

Question

我有UserDTO

public class UserDTO
{
    public int UsersFundRoleID { get; set; }
    public int UserID { get; set; }
    public string UserName { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string DisplayName { get; set; }
    public string Email { get; set; }
    public int? FundID { get; set; }
    public int RoleID { get; set; }

}

和用户实体

public partial class User
{        
    public int UserID { get; set; }
    public string UserName { get; set; }
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public string Email { get; set; }
    public bool IsDisabled { get; set; }
    public Nullable<System.DateTime> DisabledDateTime { get; set; }

    public virtual ICollection<UsersFundRole> UsersFundRoles { get; set; }
}

我正在尝试更新“ UsersFundRoles”中的“ RoleID”，但由于UsersFundRoles是一个集合，因此无法弄清楚如何正确映射此映射。

到目前为止，我已经尝试过：var user = Mapper.Map<UserDTO, User>(userDto); 但是UsersFundRoles集合为空。