How to remove leading zeros using C#

Question

How to remove leading zeros in strings using C#?

For example in the following numbers, I would like to remove all the leading zeros.

0001234
00000012         


        

Answer 1

Regex rx = new Regex(@"^0+(\d+)$");
rx.Replace("0001234", @"$1"); // => "1234"
rx.Replace("0001234000", @"$1"); // => "1234000"
rx.Replace("000", @"$1"); // => "0" (TrimStart will convert this to "")

// usage
var outString = rx.Replace(inputString, @"$1");