How do I convert an Int to a String in C# without using ToString()?

Question

Convert the following int argument into a string without using any native toString functionality.

public string integerToString(int integerPas         


        

Answer 1

This is the solution I always use:

    public static string numberBaseChars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";

    public static string IntToStringWithBase(int n, int b) {
        return IntToStringWithBase(n, b, 1);
    }

    public static string IntToStringWithBase(int n, int b, int minDigits) {
        if (minDigits < 1) minDigits = 1;
        if (n == 0) return new string('0', minDigits);
        string s = "";
        if ((b < 2) || (b > numberBaseChars.Length)) return s;
        bool neg = false;
        if ((b == 10) && (n < 0)) { neg = true; n = -n; }
        uint N = (uint)n;
        uint B = (uint)b;
        while ((N > 0) | (minDigits-- > 0)) {
            s = numberBaseChars[(int)(N % B)] + s;
            N /= B;
        }
        if (neg) s = "-" + s;
        return s;
    }

This looks quite complicated but has the following features:

• Supports radix 2 to 36
• Handles negative values
• Optional total number of digits