public List<Employee> Esp_GetEmp()
 {
     using (var context = new Context())
     {
         var emps = context.Employees.ToList();
         return emps;
     }
 }
 public void Esp_AddEmp(Employee emp)
 {
     using (var context = new Context())
     {
         context.Employees.Add(emp);
         context.SaveChanges();
     }
 }