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This extra layer is known as membership The membership features fall into three broad categories: User record management: Rather than create your own user database, if you use the membership features, ASPNET can create and maintain this catalog of user information It can even implement advanced rules (such as requiring e-mail addresses, asking security questions, and implementing strong passwords) Security controls: Every secure website needs a login page With ASPNET s security controls, you don t need to design your own instead, you can use a ready-made version straight from the Login section of the Toolbox And along with the basic Login control are other controls for displaying secure content, creating new users, and changing passwords Best of all, you can customize how every security control works by setting properties and reacting to events Role-based security: In many websites, you need to give different permissions to different users.

Of course, life would be far too complex if you had to maintain a different set of settings for each user, so instead it s useful to assemble users into groups that define certain permissions These groups are called roles, and ASPNET s membership features include tools for automatically creating a database with role information In this chapter, you ll explore all three of these feature areas and see how you can create secure sites with surprisingly little code..

The key membership feature is the ability of ASPNET to store user credentials in a database The idea is that you make a few choices about the information that will be stored and the security policy that will be used From that point on, ASPNET manages the user database for you adding new user information, checking credentials when users try to log in, and so on Clearly, the membership data store has the ability to greatly reduce the amount of code you need to write You can create a secure website with much less code and, hence, much less work You also don t need to worry about inevitable bugs, because the ASPNET membership module is a well-known, carefully tested component.

Like the children() function, other Tree behavior functions may be called in the model or controller by referencing the model. This is done in the controller by entering the model name and calling out the Tree behavior function desired, not by entering the name of the behavior: $this->Model->children($id); // this will work $this->Model->Tree->children($id); // this will not work In the model, the model name is left out, as with referencing other model functions, like so: $this->children($id); // this will work $this->Tree->children($id); // this will not work $this->Model->children($id); // neither will this

So, why wouldn t you want to use the membership data store A few possible reasons exist: You don t want to store your data in a database: In theory, you can store your user list in any type of data store, from an XML file to an Oracle database Technically, each data store requires a different membership provider However, ASPNET includes only two providers the SQL Server provider you ll use in this chapter and a provider for Active Directory If you want to use another data store, such as a different relational database, you ll need to find a corresponding membership, or you ll need to forgo membership altogether You need backward compatibility: If you ve already created a table to store user information, it may be too much trouble to switch over to the membership data store.

5. In the By Changing Cell box, type or click cell C19. 6. Click OK, and click OK again. Answer: If a = 2, b = 4, c = 3, d = 65, x = 5, and y = 7, then z = 9.

That s because the SQL Server membership provider expects a specific table structure It won t work with existing tables, because they ll have a subtly different combination of fields and data types And even if you don t need to keep the current table structure, you might find it s just too much work to re-create all your user records in the membership data store You want to manage user information in non-ASPNET applications: As you ll see in this chapter, ASPNET gives you a powerful set of objects for interacting with membership data For example, you can update user records, delete user records, retrieve user records based on certain criteria, and so on However, if you re creating another application outside ASP.