int[,] tab =
          {
              {0,1,2,3,4},
              {5,6,7,8,9,},
          }
            ;
            for (int i = 0; i < 2; i++)
            {
                for (int j = 0; j < 5; j++)
                {
                    Console.WriteLine("tab[{0},{1}]={2}", i, j, tab[i, j]);
                }
            }