.NET 4.0 urlencode in a class library

I a currently writing a .NET port of some classes originally written in PHP and I need to encode some strings to be safe for use in a URL. The catch is that I am writing this in a class library so I do not have access to system.web.httputility. Everything I have seen online is based around web applications that have access to such features. What I need is a url encoding functions that will function in a class library. Does .NET have such a feature?

Thanks,
Dan
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Daniel-BAsked:
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Carl TawnSystems and Integration DeveloperCommented:
You could always just add a reference to System.Web to your library.
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Daniel-BAuthor Commented:
I do have a reference to system.web, I still dont have access to httputility
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CodeCruiserCommented:
One option is to reference the System.Web and then use the urlencode method

http://social.msdn.microsoft.com/forums/en-US/csharpgeneral/thread/12fcaefa-75a9-4fc5-bf06-d5c19322b7b9

The other option is this

http://www.west-wind.com/weblog/posts/617930.aspx
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Carl TawnSystems and Integration DeveloperCommented:
If you have a reference to System.Web, then HttpUtility is there.  How are you trying to access it?
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Daniel-BAuthor Commented:
I've tried System.Web.HttpUtility and HttpUtility. Intellisense has no knowledge of it of any kind.
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Carl TawnSystems and Integration DeveloperCommented:
That's odd. If you have added a reference to the assembly then it should be recognising it, even if it is a class library.

Are you getting any intellisense response when you access System.Web at all?
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Daniel-BAuthor Commented:
Yes, I get:
aspNetHostingPermission
aspNetHostingPermissionAttribute
aspNetHostingPermissionLevel
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Carl TawnSystems and Integration DeveloperCommented:
In that case you can't have added a reference to the System.Web assembly. The three items you mention are part of the System.Web namespace, but aren't part of the System.Web assembly itself.

Right-click your project, choose Add Reference, then on the .Net tab scroll down to System.Web, select it then click OK. You should then get access to System.Web.HttpUtility
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Daniel-BAuthor Commented:
Works perfect, thanks.
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