Download A Programmer's Introduction to C# by Eric Gunnerson PDF

By Eric Gunnerson

C# is the major language for Microsoft's subsequent new release of home windows providers, the .NET platform. This new programming language is quick and sleek and used to be designed to extend programmer productiveness. C# allows programmers to fast construct a variety of purposes for the recent Microsoft .NET platform. The .Net platform allows builders to construct C# parts to turn into net companies to be had around the net. utilizing C# language constructs, those elements might be switched over into net companies, permitting them to be invoked around the web. Gunnerson's publication is designed as a finished reference for specialist programmers to assist get them up to the mark on C#. The writer is a lead developer on Microsoft's C# improvement crew, and has logged many developer hours writing and trying out C# code. As such, he is uniquely poised to educate builders the powerful use of this new language. A Microsoft insider, Gunnerson is additionally capable of clarify to readers how C# matches into Microsoft's new .NET framework. a last component to the e-book presents a historical past of C#, and a language comparability to different commonly used programming languages. Gunnerson's booklet presents a starting place upon which programmers can start to advance in C#. one of the center subject matters coated are the COM+ surroundings, statements and circulation of execution, sessions, structs, interfaces, expressions, arrays, enums, delegates and occasions, exception dealing with, interoperability, and chosen complex themes.

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If cleanup is done in a destructor, there should also be another method that performs the same operation so the user can control the process directly. ” Overloading and Name Hiding In C# classes—and in the Common Language Runtime in general—members are overloaded based upon the number and types of their parameters. They are not overloaded based upon the return type of the function. GetNextValue(12)); } } This code doesn’t compile because the overloaded GetNextValue() functions differ only in return type, and the compiler can’t figure out which function to call.

In that case, a value type is used, which is done by declaring a struct in C#. Structs act similarly to classes, but with a few added restrictions. They can’t inherit from any other type (though they implicitly inherit from object), and other classes can’t inherit from them. A Point Struct In a graphics system, a value class could be used to encapsulate a point. WriteLine("Start: {0}", start); } } The x and y components of the Point can be accessed. In the Main() function, a Point is created using the new keyword.

In C#, however, objects are tracked by the garbage collector rather than the compiler, so exception handling is very inexpensive to implement and imposes little runtime overhead on the program when the exceptional case doesn’t occur. Design Guidelines Exceptions should be used to communicate exceptional conditions. Don’t use them to communicate events that are expected, such as reaching the end of a file. In the normal operation of a class, there should be no exceptions thrown. Conversely, don’t use return values to communicate information that would be better contained in an exception.

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