MembershipProvider in .NET 4.0

H开发者_如何学Cow 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 guide me through this process.

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Interesting. However, build errors are your friend ;)

Attempting to build a class library built as you describe, I get the following build error:

The type name 'MembershipProvider' could not be found. This type has been forwarded to assembly 'System.Web.ApplicationServices, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35'. Consider adding a reference to that assembly.

Following the instructions (adding a reference to System.Web.ApplicationServices) allows me to carry on as expected.

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The MembershipProvider abstract class is part of the System.Web.ApplicationServices namespace in the .net 4.0 Framework. Add a reference to that assembly and it should solve the issue.

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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.

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There is an reference not set oder an missing using namespace is System.Web.Security Check if assembly System.Web.ApplicationServices.dll is referenced

for more info checkt out MSDN