I want to pad left every number with zeroes (it has to be 8 digits) in my string.
e.g.
asd 123 rete > asd 00000123 rete
4444 my text > 00004444 my text
Is it possible to do this using regular expressions? Especially Regex.Replace()?
Notice that the number of zeroes is different for different numbers. I mean the padded number has to be 8 digits long.
static void Main(string[] args)
{
string myCC = "4556364607935616";
string myMasked = Maskify(myCC);
Console.WriteLine(myMasked);
}
public static string Maskify(string cc)
{
int len = cc.Length;
if (len <= 4)
return cc;
return cc.Substring(len - 4).PadLeft(len, '#');
}
Just replace the '#' with 0 or '0'. Hope that helped :)