public void AddUsersToRoom(long roomId, List <long> userIdList)
 {
     using (var connection = new SqlConnection(_connectionString))
         using (var cmd = connection.CreateCommand())
         {
             connection.Open();
             cmd.CommandType = System.Data.CommandType.StoredProcedure;
             cmd.CommandText = AddUsersToRoomCmd;
             cmd.Parameters.AddWithValue("@roomId", roomId);
             cmd.Parameters.Add(TableUtil.CreateTableLong("@userList", userIdList));
             cmd.ExecuteNonQuery();
         }
 }