数组操作

1.string[] 

//ex1
string [] userData = {"1","2","3","4"};
userData.GetLength(0); //长度
userData[0];  //item
userData.GetValue(0);  //item

2.int[] 

//ex1
int[] numbers = {4, 5, 6, 1, 2, 3, -2, -1, 0};
numbers.GetLength(0);  //长度
numbers[0];  //item
numbers.GetValue(0);  //item
foreach (int i in numbers){System.Console.WriteLine(i);}

3.int[,] 二维数组

int[,] numbers = new int[4, 2]{{9, 99}, {3, 33}, {5, 55}, {6, 66}};
numbers.GetLength(0); //行，等于4
numbers.GetLength(1); //列，等于2

备注
1. Array.Sort(userData);  //排序