List<int> list = new List<int>();

                bool end = true;

                int row = -1;

                while (end)

                {

                    bool b = true;

                    if (list.Count == 0)

                    {

                        row = new Random().Next(dealerList.Rows.Count);

                        list.Add(row);

                        continue;

                    }

                    row = new Random().Next(dealerList.Rows.Count);

                    for (int i = 0; i < list.Count; i++)

                    {

                        if (list[i] == row)

                        {

                            b = false;

                            break;

                        }