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.NET Framework ,[object Object],[object Object],[object Object]
CLI ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
Features ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Advantages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
Versions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
CLR ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
CLR Architecture ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
CTS(Common Type System) ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
CTS
[object Object],[object Object]
Class Library ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
The .NET Framework Base Class Library Common Language Specification Common Language Runtime ADO.NET: Data and XML VB C++ C# Visual Studio.NET ASP.NET: Web Services and Web Forms JScript … Windows Forms Windows Forms
.NET Framework Libraries
Namespaces ,[object Object],[object Object],[object Object],[object Object],[object Object]
Assemblies ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Assembly Manifest ,[object Object],[object Object],[object Object],[object Object]
Functions ,[object Object],[object Object],[object Object],[object Object],[object Object]
Application Types ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
Memory Management ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Managed code Execution Process ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
CLR: Execution Model VB Source code Compiler C++ C# Compiler Compiler Assembly IL Code Assembly IL Code Assembly IL Code Operating System Services Common Language Runtime JIT Compiler Native Code Managed code Unmanaged Component
Language interoperability   ,[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
Code Access Security ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object]
Advantages ,[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
Alternate ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

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Net framework

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  • 19. CTS
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  • 23. The .NET Framework Base Class Library Common Language Specification Common Language Runtime ADO.NET: Data and XML VB C++ C# Visual Studio.NET ASP.NET: Web Services and Web Forms JScript … Windows Forms Windows Forms
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  • 41. CLR: Execution Model VB Source code Compiler C++ C# Compiler Compiler Assembly IL Code Assembly IL Code Assembly IL Code Operating System Services Common Language Runtime JIT Compiler Native Code Managed code Unmanaged Component
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Editor's Notes

  1. The .NET framework exposes numerous classes to the developer. These classes allow the development of rich client applications and Web based applications alike. In the above slide these classes have been divided into 4 areas. ASP.NET provides the core Web infrastructure such as Web Forms for UI based development and Web Services for programmatic interface development, User interface development on the Windows platform can be done using Windows Forms ADO.NET and XML provide the functionality for data access. Finally, the core base classes provide infrastructure services such as security, transaction management etc.
  2. We already know that an assembly does NOT contain native binary code, but instead MSIL code. Obviously before the MSIL code can be executed it must be converted into native binary instructions. Converted? Does this mean interpreted? NO! The MSIL code is compiled and not thrown away. This means that next time the code is requested it is already in the form of machine instructions and thus this mechanism in the log run is far more efficient than an interpreter for example. The compilation is carried out by a JIT (Just In Time) compiler. Does the compiler compile all of the code in one go? The answer to this question is NO. If this approach was taken there would be a long delay during the applications initialisation, and realistically not all the code within the module will be required in one go. Instead, when the code is loaded a ‘stub’ is connected to each method. When a method is called via the stub the compiler generates the binary native code. This mechanism goes a long way to describing why the compiler is called a ‘JIT’ compiler. Compiled code is only saved in the same process (run) of an application. And even then it's not guaranteed. we do what's called "code-pitching" which means we through away cold (or little used) JITed code if memory pressure requires it. We do persisted JITed code in the install time scenario. The benefit for to this system is obviously portability. A couple of things to think about - Let’s imagine you’ve built a managed component for the Intel Pentium III platform. It works fine. Later in the year Intel release a super new chip. When Microsoft release a new version of the JIT, it’s possible that this brand spanking new version of the JIT will have learned a few new tricks e.g. to make use of the new improved instruction set of the new Intel chip or new CPU registers! And finally, Microsoft plan to offer a tool called PREJIT. This tool will compile your assemblies into native code and save the resultant binary executable code to disk. When the assemblies are next loaded the binary code is already available thus improving startup time and execution speeds.