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

The regex is:

[^0-9.]

You can cache the regex:

Regex not_num_period = new Regex("[^0-9.]")

then use:

string result = not_num_period.Replace("joe ($3,004.50)", "");

However, you should keep in mind that some cultures have different conventions for writing monetary amounts, such as: 3.004,50.