private void DeleteColony() { List <ColonyInfo> colonyInfo = envirenment.GetInfo(); if (colonyInfo.Count == 0) { Console.WriteLine("Colony not found"); return; } for (int i = 0; i < colonyInfo.Count; i++) { Console.WriteLine(colonyInfo[i].KindName + " N-" + i); } choice = Check("Delate colony N=", @"^\d+$", colonyInfo.Count).ToString(); envirenment.DeleteColony(Convert.ToInt32(choice)); }