Missing System.Web.UI and System.Web.Security

Question

I can't compile a project because the namespaces System.Web.UI and System.Web.Security are missing. I can only see System.Web.ApplicationServices, System.Web.Mvc and System.Web.Services when I do add references. Where do I download the missing namespaces?

Answer 1

Go to menu Project -> Add reference and find out the System.Web.dll in the list

Answer 2

I don't know about System.Web.UI, but System.Web.Security moved to the System.Web.ApplicationServices assembly in .NET 4.0 Framework.

Answer 3

Following Kinderchocolate's suggestion, I switched to ".Net Framework 4" in my project's Properties (VS 2010), and that caused "System.Web" to appear in the assemblies list. From then on I was finally able to use System.Web.UI.

So I'm not sure what failed for kinderchocolate, but his change worked for me.

Answer 4

You can add System.Web.ApplicationServices assembly in .NET 4.5 Framework.

using System.Web.ApplicationServices;