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

Aiming for a shorter version, and one that uses Math.DivRem:

string IntToString(int a)
{
    if (a == int.MinValue)
        return "-2147483648";
    if (a < 0)
        return "-" + IntToString(-a);
    if (a == 0)
        return "0";
    var s = "";
    do
    {
        int r;
        a = Math.DivRem(a, 10, out r);
        s = new string((char)(r + (int)'0'), 1) + s;
    }
    while (a > 0);
    return s;
}

The use of the new string(..., 1) constructor is just a way to satisfy the OP's requirement that ToString not be called on anything.