// public void Edit(string newDescription)
// {
//      MySqlConnection conn = DB.Connection();
//      conn.Open();
//      var cmd = conn.CreateCommand() as MySqlCommand;
//      cmd.CommandText = @"UPDATE categories SET name = @newDescription WHERE id = @searchId;";
//      MySqlParameter searchId = new MySqlParameter();
//      searchId.ParameterName = "@searchId";
//      searchId.Value = _id;
//      cmd.Parameters.Add(searchId);
//      MySqlParameter description = new MySqlParameter();
//      description.ParameterName = "@newDescription";
//      description.Value = newDescription;
//      cmd.Parameters.Add(description);
//      cmd.ExecuteNonQuery();
//      _name = newDescription; // <--- This line is new!
//      conn.Close();
//      if (conn != null)
//      {
//              conn.Dispose();
//      }
// }

        public void Dispose()
        {
            Speciality.ClearAll();
            Doctor.DeleteAll();
        }