Thanks for your reply actually I tried a similar method this: Roles.AddUsersToRoles However that gave en exception. Until you've posted me, I did not realize your suggest. Thanks for your help.

Hi, I have freelance job which is about an online food order. Someone who wants to order food have to be registired. I want to add registered users to the role "member". I can handle the registiration process but I cannot add to the role member. How can I achieve this? I've searched but couldn't find it.

What do you do with those many services?

I firstly looked at it. But it was normal .net 4.0. I suppose the reason of it was up to my laptop's configuration or an error during setup process. I will reinstall vs 2013 later. Now I'm again workin in vs 2010 in order to finish my other projects.

Thank you. I tried it. Again I will uninstall and repeat it.

I exactly took the same steps. I've puzzled about this. And it only occurs in Class Libraries. System.Web is normal in web sites. Before that in VS 2010, there was no problem in adding and using System.web components to Class Libraries.

Life is short and the art is long.

If I add System.web reference to a class library in vs 2013 (.net 4) I can only reach AspNetHostingPermission, AspNetHostingPermissionLevel, AspNetHostingPermissionAttribute, and no other objects such as HttpContext or HttpRequest. Is my installation wrong?

Hi, Recently I started using VS 2013. Before that I had used VS 2010. The problem is that: I cannot add refence of System.Web such that I cannot use its objects such as HttpContext. What can I do to solve it?