public IActionResult Get()
 {
     //exception handling
     try
     {
         List <User> list = _context.GetAllDetails();
         if (list.Count != 0)
         {
             return(Ok(list));
         }
         else
         {
             return(StatusCode(404));
         }
     }
     catch
     {
         return(StatusCode(500));
     }
 }