By Dario Laverde
This advisor builds on what Java programmers already learn about item- orientated languages to assist them grasp C# and the .NET framework. After an summary of the C# language, chapters hide language basics, programming buildings, object-oriented programing, multithreading, operating with I/O streams, internet improvement, and the Java person Migration direction. Bagnall is a solar qualified Java Programmer and developer.
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NET application using it. No more worries about different calling conventions or data types, just seamless interoperability. NOTE Metadata is information describing the data associated with it. You’ll get to learn more about metadata in later chapters. Cross-language inheritance is another feature made possible by the use of IL. You can now create new classes based on components written in other languages, without needing the source code to the base component. For example, you can create a class in C# that derives from a class implemented in C++.
C# methods are nonvirtual by default and must be explicitly declared as virtual to be overridden. In Java, all methods are virtual by default and can be overridden by a derived class. C# provides some versioning control for the language by preventing accidental overriding of a method. ■ C# implements delegates as a replacement for the old function pointer of C++. Delegates are an object-oriented function pointer that can reference static or instance methods. It provides a type-safe mechanism for implementing callback functions and events.
Using COM components This is likely to be for pretty much the same reasons you might be required to call DLL functions. NET services from COM components Although this sounds a little odd, it is possible. NET component as though it was a COM server. When a new piece of technology is introduced, legacy support is one of the main things it needs in order to gain acceptance and adoption in the industry. Microsoft didn’t want to force companies to abandon their existing COM components; especially because many of Microsoft’s own products are COM-based today.