Remove all whitespace from C# string with regex

Question

I am building a string of last names separated by hyphens. Sometimes a whitespace gets caught in there. I need to remove all whitespace from end result.

Sample strin

Answer 1

Below is the code that would replace the white space from the file name into given URL and also we can remove the same by using string.empty instead of "~"

  if (!string.IsNullOrEmpty(url))
          {
           string origFileName = Path.GetFileName(url);
           string modiFileName = origFileName.Trim().Replace(" ", "~");
           url = url.Replace(origFileName , modiFileName );
          }
          return url;