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what is .net framework  

2014-01-02 15:59:27|  分类: C# |  标签: |举报 |字号 订阅

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.NET Framework can be understood as a runtime environment and a comprehensive base class library.The runtime
layer is properly referred to as the common language runtime, or CLR. The primary role of the CLR is to locate, load, and manage .NET types on your behalf. The CLR also takes care of a number oflow-level details such as memory management; creating application domains, threads, and object context boundaries; and performing various security checks.
Another building block of the .NET platform is the Common Type System, or CTS. The CTS
specification fully describes all possible data types and programming constructs supported by the
runtime, specifies how these entities can interact with each other, and details how they are represented
in the .NET metadata format .
Understand that a given .NET-aware language might not support each and every feature
defined by the CTS. The Common Language Specification (CLS) is a related specification that
defines a subset of common types and programming constructs that all .NET programming languages
can agree on. Thus, if you build .NET types that only expose CLS-compliant features, you
can rest assured that all .NET-aware languages can consume them. Conversely, if you make use of a
data type or programming construct that is outside of the bounds of the CLS, you cannot guarantee
that every .NET programming language can interact with your .NET code library.

http://msdn.microsoft.com/zh-cn/library/zw4w595w(v=vs.110).aspx
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