public bool Create(DbFirst.Student model)
 {
     try
     {
         db.Students.Add(model);
         db.SaveChanges();
         return(true);
     }
     catch (Exception ex)
     {
         return(false);
     }
 }
        public bool Update(DbFirst.Student model)
        {
            try
            {
                var existing = db.Students.Find(model.Id);
                if (existing == null)
                {
                    return(false);
                }
                existing.Student1 = model.Student1;
                existing.Email    = model.Email;
                existing.DOB      = model.DOB;

                db.Entry(existing).State = System.Data.Entity.EntityState.Modified;
                db.SaveChanges();
                return(true);
            }
            catch (Exception ex)
            {
                return(false);
            }
        }