Convert string to int C# and place to the array

Question

I have one problem with convert word to int. Is it badly written?

foreach (string line in lines)
        {
            string[] words = line.Split(' ');
            foreach (string word in words)
            {

                {
                    tab[i] = Int32.Parse(word);
                    Console.WriteLine(tab[i]);
                    i++;

                }
            }
        }

On these line:

tab[i] = Int32.Parse(word);

I have error:

An unhandled exception of type 'System.FormatException' occurred in mscorlib.dll

file:

0

12 0

19 15 0

31 37 50 0

22 21 36 20 0

17 28 35 21 25 0

Answer 1

Your string doesn't represent a clean int. Probably a number with decimal places? (eg 5.5?) To catch and print the word you can just use a try/catch.

Answer 2

This means there's something wrong with your input. Consider using Int.TryParse, which will work assuming you're only looking to use well-formed integers. You could also rig up some output on failure to give you an idea of what values are failing to parse, for example,

bool b;
int tempNumber;
foreach (string line in lines)
{
    string[] words = line.Split(' ');
    foreach (string word in words)
    {
        b = Int32.TryParse(word, out tempNumber);
        if (b) // success
        {
            tab[i] = tempNumber;
            Console.WriteLine(tab[i]);
            i++;
        }
        else // handle error
        {
           Console.WriteLine("Error: '" + word + "' could not be parsed as an Int32");
        }
    }
}