MembershipProvider in .NET 4.0

Question

How can I add the MembershipProvider class to my .NET 4.0 project in VS 2010 B2?

I want to customize a MembershipProvider, but I cannot without adding this class. Please

Answer 1

On my case, I am using Visual Studio 2019, I need to add both of these:

System.Web.ApplicationServices

and

System.Configuration

In order to build it successfully upon inheriting MembershipProvider to create my own MyMembershipProvider class.