Regex to remove all (non numeric OR period)

Question

I need for text like \"joe ($3,004.50)\" to be filtered down to 3004.50 but am terrible at regex and can\'t find a suitable solution. So only numbers and periods should stay -

Answer 1

You are dealing with a string - string is an IEumerable, so you can use LINQ:

var input = "joe ($3,004.50)";
var result = String.Join("", input.Where(c => Char.IsDigit(c) || c == '.'));

Console.WriteLine(result);   // 3004.50