文本文件只读奇数或偶数行？

Question

我正在尝试编写一个从文本文件中读取的C#程序,并允许您选择要打印的行.

出于某种原因,它只会打印1,3,5等行.

如果我改变写着位int chooseLine = Convert.ToInt32(input);来int chooseLine = (int)Convert.ToInt64(input);,然后只打印偶数行(0,2,4,6等).

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
class Steve
{
    public static int count = 0;
    public static String[] steveTalk;
    public static void Main()
    {
        using (StreamReader r = new StreamReader("Steve.txt"))
        {
            string line;
            while ((line = r.ReadLine()) != null)
            {
                count++;
            }
        }
        using (StreamReader sr = new StreamReader("Steve.txt"))
        {
            int i = 0;
            steveTalk = new String[count];
            String line;
            while ((line = sr.ReadLine()) != null)
            {
                steveTalk[i] = line;
                Console.WriteLine(steveTalk[i]);
                i++;
            }
        }
        while (true)
        {
            string input = Console.ReadLine();
            int chooseLine = Convert.ToInt32(input);
            try
            {
                Console.WriteLine(steveTalk[chooseLine]);
            }
            catch
            {
                Console.WriteLine("Error! Not a number or array index out of bounds");
            }
            Console.ReadLine();
        }
    }
}

有任何想法吗？

Answer 1

我想建议这个System.IO.File.ReadAllLines(filename)方法.

string []lines=System.IO.File.ReadAllLines("Steve.txt");

string input ;

while ((input = Console.ReadLine()) != "end")
    {
        int chooseLine;
        int.TryParse(input,out chooseLine);
        if(chooseLine<lines.Length)
         {
           Console.WriteLine(lines[chooseLine]);
         }
    }