String replace whole word and not substring

You may want to use Regex , a sample code below may help

string inputString = "key.addListener .addListener"; 
string patternToReplace= @"\B.addListener\b"; 
string result = Regex.Replace(inputString , patternToReplace, ""); 

Now result will contain string for which only whole word .addListener is removed

Note: Since the start of hte word you are looking to remove is . the first part of the regex is /B If it is normal word like addListener without the . then use /b at the start of the regex pattern.

Hope that helps.
-Milind
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