Acess index of StringBuilder

Question

I'm trying to convert the first index of a string to a int but I can't. Can someone explain how to access the index of a string and convert it to an int?

string a = "5"
public static bool VerificacaoNumero(string a, int[,] tabuleiro) 
{
  int b = a[0];
  return true;
}

(Based on sample code you are looking for [how to check if the character is an integer](http://stackoverflow.com/questions/12866214/how-to-check-if-the-character-is-an-integer) which looks like perfect duplicate to me). — Alexei Levenkov, Mar 27 '16 at 01:27

score 2 · Answer 1 · answered Mar 27 '16 at 01:02

2

There is already a built-in .NET method to verify if a character is a digit: Char.IsDigit

string a = "5"
public static bool VerificacaoNumero(string a, int[,] tabuleiro) 
{
    return char.IsDigit(a[0]);
}

answered Mar 27 '16 at 01:02

Metro Smurf

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I actually prefer this option far better. Totally forgot about IsDigit – Drew Kennedy Mar 27 '16 at 01:19

Drew Kennedy · Answer 2 · 2016-03-27T01:18:15.877

1

You could parse the string value to an int.

int b;
return int.TryParse(a[0], out b);

That should work for you.

edited Mar 27 '16 at 01:18

answered Mar 27 '16 at 00:58

Drew Kennedy

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TryParse does not take character... Clearly it should not work for anyone (except somehow for one person). – Alexei Levenkov Mar 27 '16 at 01:24

Acess index of StringBuilder

2 Answers2