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1 name Name nillable true type s string s element minOccurs 1 maxOccurs 1 name Address nillable true type s string s element minOccurs 1 maxOccurs 1 name City nillable true type s string s element minOccurs 1 maxOccurs 1 name State nillable true type s string s sequence s complexType Given these definitions, a client can define a Bookstore class of its own and initialize arrays of Bookstore objects by dese. windows 8.1 professional x64 serial key, enables you to access a protected page indefinitely as long as the browser remains open and you submit the cookie to ASP. NET at least once every 15 minutes. If the user checks the Keep me signed in box in the login page of the application in the previous section, LoginPage. aspx issues a persistent authentication cookie by passing true to RedirectFromLoginPage. Here s that statement again FormsAuthenticat.
windows 8.1 professional x64 serial key closes the connection to the database. Under the hood, the DataAdapter uses a DataReader to fetch the query results, but that s merely an implementation detail. What matters is that one simple call fills a DataSet with data from a database. Furthermore, you control what goes into the DataSet because you provide the command that makes up the query. That query can be as complex as you like whatever it takes.
will generate an InvalidCastException. That will activate the InvalidCastException handler, which in this example writes the message encapsulated in the exception object to the console. To write a more generic catch handler that catches any exception thrown by the framework, specify Exception as the exception type catch Exception e And to respond differently to different types of exceptions, simply incl. , but not if it s owned by other reader threads. AcquireWriterLock blocks if the lock is owned by anyone. Consequently, multiple threads can read the resource concurrently, but only one thread at a time can write to it and it can t write if another thread is reading. That s ReaderWriterLock in a nutshell. The application in Figure 14 12 demonstrates how these concepts translate to real world code. It s the . 8.1, exe. config to point to the remote server. Figure 15 5 The NetDraw application. NetDraw, whose source code appears in Figure 15 6, demonstrates several important principles of. NET remoting. Let s tackle the big picture first. At startup, the client NetDraw. exe instantiates a Paper object and registers a handler for the object s NewStroke events VirtualPaper new Paper NewStrokeHandler new StrokeHandler On. windows 8.1 professional x64 serial key.
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derstanding of the FCL, but also help you when the time comes to build data types of your own. Classes A class in the. NET Framework is similar to a class in C a bundle of code and data that is instantiated to form objects. Classes in traditional object oriented programming languages such as C contain member variables and member functions. Framework classes are richer and can contain the following members .