public IList <employee_info> GetAll()
 {
     using (dbemployeeEntities db = new dbemployeeEntities())
     {
         return(db.employee_info.ToList());
     }
 }
 public employee_info GetById(int id)
 {
     using (dbemployeeEntities db = new dbemployeeEntities())
     {
         return(db.employee_info.Find(id));
     }
 }
 public void Delete(employee_info obj)
 {
     using (dbemployeeEntities db = new dbemployeeEntities()) {
         db.employee_info.Attach(obj);
         db.employee_info.Remove(obj);
         db.SaveChanges();
     }
 }
 public void Update(employee_info obj)
 {
     using (dbemployeeEntities db = new dbemployeeEntities())
     {
         db.employee_info.Attach(obj);
         db.Entry(obj).State = System.Data.Entity.EntityState.Modified;
         db.SaveChanges();
     }
 }
 public employee_info Insert(employee_info obj)
 {
     using (dbemployeeEntities db = new dbemployeeEntities())
     {
         db.employee_info.Add(obj);
         db.SaveChanges();
         return(obj);
     }
 }