What does char 160 mean in my source code?

Question

I am formatting numbers to string using the following format string \"# #.##\", at some point I need to turn back these number strings like (1 234 567) into something like 1234

Answer 1

Wouldn't be the preferred method to replace all empty characters (and this is what the questioner wanted to do) with the Regex Method which Rubens already posted?

Regex.Replace(input, @"\p{Z}", "");

or what Expresso suggests:

Regex.Replace(input, @"\p{Zs}", "");

The difference here is that \p{Z} replaces any kind of whitespace or invisible separator whereas the \p{Zs} replaces a whitespace character that is invisible, but does take up space. You can read it here (Section Unicode Categories):

http://www.regular-expressions.info/unicode.html

Using RegEx has the advantage that only one command is needed to replace also the normal whitespaces and not only the non-breaking space like explained in some answers above.

If performance is the way to go then of course other methods should be considered but this is out of scope here.