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Where is UrlEncode method if I need to call it from a business object class?

I have an ASP.NET/C# application. In a method in one of the business object classes, I need to make an HttpWebRequest to a website that returns an XML response. I need to URL-encode the request, but the System.Web namespace in an ".cs" business object class does not include the needed HttpUtility class that it does in the System.Web namespace if called directly from the ".aspx.cs" code-behind. I could hack a work-around to pass the string value back to the .aspx.cs page and then pass the url-encoded value back to the .cs class, but that doesn't seem very elegant, and I don't think that I should have to, since I may need to use this method from other places.

So, my question is, where do I find a UrlEncode method that I can use?
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DanielBorson
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DanielBorson
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Göran AnderssonCommented:
Include the name using using:

using System.Web;

or specify the full namespace:

... = System.Web.HttpUtility.UrlEncode(...)

If you don't have a reference to the system.web.dll, you need to add it. Right click on references in the project in the solution explorer, and select Add Reference. Add the System.Web library.
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DanielBorsonAuthor Commented:
That was it. I was seeing a "System.Web", so I thought I had that reference, but it only had three classes in it, so I'm not sure what that was, but it wasn't the System.Web I needed. Adding the reference to the project was what it needed. Thanks.
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Göran AnderssonCommented:
There are some classes in the System.Web namespace in the mscorlib.dll, so they are always there. Although most libraries have their own namespace, there is nothing that keeps a namespace from being spread across several libraries.
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