如何从特定行的文本文件中读取数字？

Question

this is my text file:

Earnings: 17 

EarningsM: 2

Level: 6

How can I set this numbers for integers?

I tried

foreach (string line in File.ReadLines(@"C:\Program Files (x86)\makeeuro\work.txt"))
    if (line.Contains("Earnings"))
        button1.Text = line;

but I need only numbers, so it's now working correctly. This is my integers:

int xp;
int lvlg;
int lvl;

I need to put "Earnings" value for xp, "EarningsM" for lvlg and "Level" for lvl.

Answer 1

Try this:

IEnumerable<string> lines = File.ReadLines(@"C:\Program Files (x86)\makeeuro\work.txt");
Dictionary<string, int> values = lines
    .Where(l => !string.IsNullOrEmpty(l))
    .Select(s => s.Split(':'))
    .ToDictionary(split => split[0], split => int.Parse(split[1]));

Then you'll be able to access your integer values by name like this:

int xp = values["Earnings"];

and so forth.

Of course this is very crude and does no error checking, which I'll leave to you as an exercise ;-)

A bit of explanation about the Linq operators:

The Where operator gets rid of empty lines.

The Select operator splits each line at the : , and projects it into an array containing two string, the key and the value.

The ToDictionary operator creates the dictionary by selecting the first item of the split as the key, and the second as the value.

Cheers