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This method creates a new role. This method deletes an existing role. This method returns a collection of users in a role. This method returns a collection of roles for the current user. This method returns a collection of all roles that currently exist. This method returns true if the user is a member of a specified role. These methods remove a user or users from a role

Key Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-42

Using IIS as the Remoting Host If you write your own host application, you can make it as flexible as you need If you decide to use IIS as the host, some constraints apply To use IIS instead of a handcrafted host as the activation agent, you must first create a virtual directory (say, SalesReport) and copy the object's assembly in the BIN subdirectory The configuration file must have a fixed name webconfig and must reside in the virtual directory's root, as shown in Figure 12-4..

To control which computer games your child is allowed to play, in the User Controls window (shown in Figure 10-21), click Games. From the window shown in Figure 1024, click Set Game Ratings to specify the ratings codes for allowable games. You can also block games that contain specific types of objectionable content, even if the game s rating falls into the acceptable range. (Scroll down on the game ratings page to see these types of content, many of which you probably never imagined could appear in something called a game. ) In addition, you can review a list of installed games and explicitly block or allow certain titles.

Figure 31-7 The Remote Access option refers to connections through a Virtual Private Network (VPN) or dial-up connection.

These methods represent a more traditional approach to working with client-side script. Each is covered in the following sections.

In some languages, such as unmanaged C++, it is possible to declare methods or parameters as a constant that forbids the code in an instance method from changing any of the object s fields or prevents the code from modifying any of the objects passed into the method The CLR does not provide for this, and many programmers have been lamenting this missing feature Since the CLR doesn t offer this feature, no language (including C#) can offer this feature First, you should note that in unmanaged C++, marking an instance method or parameter as const ensured only that the programmer could not write normal code that would modify the object or parameter Inside the method, it was always possible to write code that could mutate the object/parameter by either casting away the const-ness or by getting the address of the object/argument and then writing to the address .

umes onto disks that use separate controllers whenever possible. This process is known as duplexing and eliminates the disk controller as a single point of failure. It can also speed up both reading and writing to the mirror, because the controller and bus are no longer potential bottlenecks.

In a sense, unmanaged C++ lied to programmers, making them believe that their constant objects/arguments couldn t be written to even though they could When designing a type s implementation, the developer can just avoid writing code that manipulates the object/arguments For example, strings are immutable because the String class doesn t offer any methods that can change a string object Also, it would be very difficult for Microsoft to endow the CLR with the ability to verify that a constant object/argument isn t being mutated The CLR would have to verify at each write that the write was not occurring to a constant object, and this would hurt performance significantly Of course, a detected violation would result in the CLR throwing an exception Furthermore, constant support adds a lot of complexity for developers For example, if a type is immutable, all derived types would have to respect this .