GetLength()方法在数组上无法正常工作

Question

这是一个C#代码.

它输出以下文字:

tab.Length = 6
tab.Rank = 2
Length of dim 0 of tab : 0
Length of dim 1 of tab : 1

我期待以下文字:

tab.Length = 6
tab.Rank = 2
Length of dim 0 of tab : 2
Length of dim 1 of tab : 3

为什么不？谢谢.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TableTest
{
    class Program
    {
        static void Main(string[] args)
        {
            int[,] tab = new int[2, 3];

            for (int i = 0; i < 2; i++)
            {
                for (int j = 0; j < 3; j++)
                {
                    tab[i, j] = 2 * i + j;
                }
            }
            Console.WriteLine("tab.Length = {0}", tab.Length);
            Console.WriteLine("tab.Rank = {0}", tab.Rank);
            for (int i = 0; i < tab.Rank; i++)
            {
                Console.WriteLine("Length of dim {0} of tab : {0} ", i, tab.GetLength(i));
            }

        }
    }
}

Answer 1

狂野猜测:您的上一个格式字符串是错误的:

Console.WriteLine("Length of dim {0} of tab: {0} ", i, tab.GetLength(i));

你正在使用{0}两次,所以你输出i两个占位符的值.

请改用:

Console.WriteLine("Length of dim {0} of tab: {1} ", i, tab.GetLength(i));