将String转换为int [英] Converting String to int

问题描述

我很沮丧.我以为这样会更容易.
我以前使用过此代码....实际上我只是将其剪切并粘贴到
我的新代码.但是，数组的大小要大得多，为1000,10000,100000，并且要从一个文件中读取，该文件最多可以接受300,000的随机数.现在我的代码不起作用.

这是一段代码...

Im frustrated. I thought this would be easier.
I have used this code before....actually I just cut and pasted it into
my new code. However the array sizes is much larger 1000,10000,100000 and reading from a a file that accept random numbers of up to 300,000. Now my code will not work.

This is the piece of code...

<prelang> while ((number = s.ReadLine()) != null)
           {
               array[item] = Convert.ToInt32(number);
               item++;
           }</prelang>

我收到输入格式不正确的错误.有趣的是，我将代码分为2个不同的文件，并且可以正常工作.我不知道为什么.这些数字很大，是吗?

谢谢
:confused:

I am getting the error that input was not in correct format. The funny thing is I separated the code into 2 different files and it worked. I cant figure out why this is. These are very large numbers, could that be it?

thanks
:confused:

推荐答案

Tanacia，

1您可以在拥有更多控制权的地方使用int.Parse(..)或int.TryParse(..).
2您可以发布引发异常的number的值吗?

干杯，
Avi

Tanacia,

1 you may use int.Parse(..) or int.TryParse(..) where you have more control.
2 Can you publish the value of number that throws an exception?

Cheers,
Avi

尝试一下:

Try this:

int LineNo = 0;
while ((number = s.ReadLine()) != null)
{
    lineNo++;
    int n = 0;
    bool didConvert = int.TryParse(number, n);
    if(didConvert)
    {
        array[item] = n;
        item++;
    }
    else
        Console.WriteLine("Line {1}: Could not convert {0} to an int!", number, lineNo);
}

干杯

Manfred

Cheers

Manfred

将while语句写为
while (!string.IsNullOrEmpty(number = s.ReadLine()))可能更好:) BTW

Hi, write the while statement as
while (!string.IsNullOrEmpty(number = s.ReadLine())) may be better :) BTW

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