C#: Converting int to string and checking for characters in the string

Question

In a C# console application I want to convert an int to a string, then check the characters in the new string, and convert them to and int. This is what I have so far to do that:

    int charNum = 0;
    int value = 111
    string valueStr = value.ToString();
    int numVariant = valueStr.ToCharArray()[charNum];

Then I add this to output their values

    Console.WriteLine(numVariant + " " + valueStr + " " + charNum);
    Console.ReadLine();

And strangely it returns

    49 111 0

Whereas what I expected it to return is

  1 111 0

So what I assume is something went wrong with converting the char to a int, any suggestions on how to fix this?

Possible duplicate of [c# why does this return 49: Convert.ToInt32('1')](https://stackoverflow.com/questions/3665978/c-sharp-why-does-this-return-49-convert-toint321) — Katana, Sep 21 '17 at 19:39

score 1 · Answer 1 · answered Sep 21 '17 at 19:28

1

Replace int numVariant = valueStr.ToCharArray()[charNum]; with int numVariant = int.Parse(valueStr[charNum].ToString());

Otherwise it takes the ASCII value of 1

answered Sep 21 '17 at 19:28

ravi kumar

1,548
1
13
47

This worked perfectly, but turns out for what I'm working, on a char value would be better, thanks a bunch for the response though :) – User2935 Sep 21 '17 at 19:33
Maybe, but your questions says that you want to convert it back to an `int`. – ravi kumar Sep 21 '17 at 19:35
Yeah, that was my bad, sorry about that – User2935 Sep 21 '17 at 19:37

score 1 · Accepted Answer · answered Sep 21 '17 at 19:28

49 is the character of '1's ascii decimal value. It is storing that because you are assigning the value to an int32 and the compiler is automatically casting the value. Simply change:

int numVariant = valueStr.ToCharArray()[charNum];

To:

char numVariant = valueStr.ToCharArray()[charNum];

C#: Converting int to string and checking for characters in the string

2 Answers2