Can't find HttpServerUtility class in System.Web in C#

Question

I'm trying to call the HttpServerUtuility.URLDecode function in C# using Visual Studio 2005, but it can't be found. I'm using System.Web properly, but the class doesn't seem to be there. Do I need to add some sort of reference to my project?

Answer 1

A few points:

• You need a reference to the System.Web assembly
• You need to get the class name right ( HttpServerUtility , not HttpServerUtuility )
• You need to get the method name right ( UrlDecode , not URLDecode )
• You need an instance of the class, as it's an instance method

Getting an instance is likely to be the hardest part, unless you're in ASP.NET - it doesn't have any public constructors or a static property to fetch an instance. Usually you'd use HttpContext.Server . An alternative is to use HttpUtility.UrlDecode , which is a static method. (Again, you'll need a reference to System.Web .)

Answer 2

添加对System.Web程序集的引用。

Answer 3

Had to add assemblies to my web api

System.Web
System.Web.Abstractions
System.Web.ApplicationServices