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| .Net Technology – In a Nut Shell |
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| .Net Compilation |
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| The Compilation Process |
- Programs are not compiled into executable files.
- They are compiled into Microsoft Intermediate Language (MSIL) files.
- When you run your program, the IL is compiled again, using the Just In Time (JIT) compiler
- The result is machine code, executed by the machine's processor.
- The standard JIT compiler runs on demand.
- When a method is called, the JIT compiler analyzes the IL and produces highly efficient machine code, which runs very fast.
- Compilation happens only as needed.
- As .NET applications run, they tend to become faster and faster, as the already compiled code is reused.
- The CLS means that all .NET languages produce very similar IL code. As a result, objects created in one language can be
accessed and derived from another. Thus it is possible to create a base class in VB.NET and derive from it in C#.
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| CLR – Architecture and Elements |
- The common language runtime is the execution engine for .NET Framework applications.
- It provides a number of services, including the following:
- Code management (loading and execution)
- Application memory isolation
- Verification of type safety
- Conversion of IL to native code
- Access to metadata (enhanced type information)
- Managing memory for managed objects
- Enforcement of code access security
- Exception handling, including cross-language exceptions
- Interoperation between managed code, COM objects, and pre-existing DLLs
- Support for developer services (debugging and so on)
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