Convert a string containing a number to an int

Question

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C# char to int

I have come across many solutions to this but I can't get it right by trying any of them. How can I convert string values like "230", "73400" or bigger to int values in c#? Will I have to use a library? Is there a way to do it natively to c#? Lets assume:

string c = "270"; int i;

How can I get i to be 270 as well?

Are you asking about converting a string containing the characters '2', '7' and '0' to an int? — Andrew Kennan, Dec 03 '12 at 06:51
Ok, I realised I should have mentioned an array of characters or a string. I was having difficulty with some parsing methods, but methods like sscanf and atoi worked great for me! thanks everyone :) — Snebhu, Dec 03 '12 at 07:13

score 2 · Answer 1 · answered Dec 03 '12 at 06:52

2

This doesn't seem to be possible char c = '270';

but you can have a string string c ="270"; and the best way would be to go by using int.TryParse(c, out intval) variant which would return true if you have a parsable int value contained in the string. Also in the value examples you mentioned i think you would need a long.

answered Dec 03 '12 at 06:52

V4Vendetta

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+1 for realizing the "real problem" :) – Habib Dec 03 '12 at 06:55

score 1 · Answer 2 · answered Dec 03 '12 at 06:48

1

try this one,

int i = (int) c;

answered Dec 03 '12 at 06:48

John Woo

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score 0 · Answer 3 · answered Dec 03 '12 at 06:49

0

int i = Char.GetNumericValue('270');

//or 

int i= Convert.ToInt32(c);

try this,

answered Dec 03 '12 at 06:49

Kishore Kumar

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score 0 · Answer 4 · answered Dec 03 '12 at 06:56

If you have a string containing "270" you can use a few different methods:

var s = "270";

var i1 = Convert.ToInt32(s);
var i2 = int.Parse(s);

// This is probably safest as it allows you to handle errors yourself without catching exceptions.
int i3;
if(! int.TryParse(s, out i3)) {
  // Panic!
}

Convert a string containing a number to an int

4 Answers4