Overflow Exception in parsing integer

Question

I'm trying to do the "Xor" operation. Firstly i convert two strings into binary, i loop on each character of the first ch in first string and the second string to xor them together, but i keep getting "overflow exception was unhandled by the user code"

r1 = 0; r2 = 0; s1 = ""; s2 = "";
  //lastW    ="10001011100001001110101100000001"

            r1 = int.Parse(lastW); //Here where i get the exception

I tried also using

 r1 = Convert.ToInt32(lastW);

but i get the same exception

score 0 · Answer 1 · answered Apr 04 '19 at 19:16

0

Your string holds a number slightly larger than "ten nonillion" in base 10. That's quite a lot larger than the maximum value of an int32.

You can use Convert.ToInt32(lastW, 2) to convert from a binary string (the second optional parameter of Convert.ToInt32 accepts a radix from which to convert).

answered Apr 04 '19 at 19:16

Arcanox

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It needs to be Convert.ToInt64(lastW, 2). It's two big for an int32. – Connell.O'Donnell Apr 04 '19 at 19:20
How your answer is differ from an accepted answer in proposed duplicate? – Aleks Andreev Apr 04 '19 at 19:29
It's not different, but it can't hurt to answer this question directly to make the solution more visible to the OP – Arcanox Apr 04 '19 at 19:48

Overflow Exception in parsing integer

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