Regular Expression (RegEx) to Find Whole Words in a String

Ever want to match and replace whole words with in a string?  Regular expressions (System.Text.RegularExpressions) makes it a one line operation:

Regex.Replace(inputText, @"\b" + wordToReplace + @"\b", replacementText, RegexOptions.IgnoreCase);

This pattern uses “word boundries” as your delimiters for matching text.

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