Книга: C# 2008 Programmer

.NET Framework Class Library

.NET Framework Class Library

The .NET Framework class library contains classes that allow you to develop the following types of applications:

? Console applications

? Windows applications

? Windows services 

? ASP.NET Web applications

? Web Services

? Windows Communication Foundation (WCF) applications

? Windows Presentation Foundation (WPF) applications

? Windows Workflow Foundation (WF) applications

The library's classes are organized using a hierarchy of namespaces. For example, all the classes for performing I/O operations are located in the System.IO namespace, and classes that manipulate regular expressions are located in the System.Text.RegularExpressions namespace.

The .NET Framework class library is divided into two parts:

? Framework Class Library (FCL)

? Base Class Library (BCL)

The BCL is a subset of the entire class library and contains the set of classes that provide core functionalities for your applications. Some of the classes in the BCL are contained in the mscorlib.dll, System.dll, and System.core.dll assemblies. The BCL is available to all the languages using the .NET Framework. It encapsulates all the common functions such as file handling, database access, graphics manipulation, and XML document manipulation.

The FCL is the entire class library and it provides the classes for you to develop all the different types of applications listed previously.

Figure 1-2 shows the key components that make up the .NET Framework.

Figure 1-2 

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