string[,] x= { {"lily","98" },{"tom","56" },{"salr" ,"88"} };
              int[] y = new int[10];
              int min,c=0;
              for(int i=0; i<x.GetLongLength(0);i++)
              {
                  y[i] = Convert.ToInt32(x[1, i]);
              }
              min = y[0];
              for (int i = 0; i < y.Length; i++)
                  if (min > y[i])
                  {
                      min = y[i];
                      c = i;
                  }
             Console.WriteLine("name:{0},grean:{1}",x[0,c],x[1,c]);

vs没有报错，运行结果有问题。