I am getting the following error at compile time when trying to include the C# port of google-diff-match-patch:
Error 1: The name 'HttpUtility' does not exist in the current context
How do I eliminate this error? I am using the following profile: Microsoft Visual Studio Express 2012 for Windows Desktop Version 11.0.60610.01 Update 3, Microsoft .NET Framework Version 4.5.51641, Microsoft Visual C# 2012, Microsoft Windows 8