c#遍历二维List出错

显示全部楼层 · 2009-3-10 13:06:12

using System;
using System.Collections.Generic;
using System.Text;
namespace Cast
{

class Program

{

static void Main(string[] args)

{

List listTemp = new List();

List D2List = new List();

for (int i = 0; i < 10; i++)

{

for (int j = 0; j < 10; j++)

{

D2List.Add(i * j);

}

}

for (int m = 0; m < 9; m++)

{

for (int n = 0; n < 9; n++)

{

Console.Write(D2List[m][n].ToString());

}

}

System.Threading.Thread.Sleep(1000);

}

}
}
代码可直接复制
出错为Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index

千问 · 2009-3-10 13:06:12

你认真学习下实例，然后看下listTemp.Clear(); 你都把listTemp清空了，之前添加的也都清空了，所以根本就没有D2List里面根本就没有东西，把List listTemp = new List(); 写到for循环的第一个括号里面就好了...

千问 · 2009-3-10 13:06:12

为什么不这么定义呢：List[] listTemp = new List(10);...