Remove formatting from a string: “(123) 456-7890” => “1234567890”?

Question

I have a string when a telephone number is inputted - there is a mask so it always looks like \"(123) 456-7890\" - I\'d like to take the formatting out before saving it to the D

Answer 1

Try this:

string s = "(123) 456-7890";
UInt64 i = UInt64.Parse(
    s.Replace("(","")
     .Replace(")","")
     .Replace(" ","")
     .Replace("-",""));

You should be safe with this since the input is masked.