Remove extra white-spaces within a string

Sometimes the trim function isn't enough. Say that you have a string looking like:

"    this    is  a test     string   "

Using Trim() would get rid of the extra white spaces in the beginning and the end, but it would still leave you with:

"this    is  a test     string"

So how to handle all extra white spaces, even those within the string? We'll lets use some regular expression for that:

using System.Text.RegularExpressions;
...

// Remove extra white-spaces within a string
text = Regex.Replace(text, @"\s+", " ");

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