User p = new User
            {
                Name = "Egor"
            };
            User p2 = new User
            {
                Name = "Ivan"
            };
            List<User> lst = new List<User>();
            lst.Add(p);
            lst.Add(p2);

insert into Users(name)
select 'Ivan' union
select 'Egor'

            try
            {
                dc.User.InsertAllOnSubmit(lst);
        
                dc.SubmitChanges();

                var ins = dc.GetChangeSet().Inserts;
            }
            catch(Exception ex)
            {

            }