Dot Net starters

Why Dot Net / Why C sharp ? Vs Java development- C# 3.0, VS 3.5

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1. language Interoperability - In Dot Net any language can be used, which is then compiled by the CLR. This is also cross platform compatible.

Here is the of Net framework diagram-

C++ C# VB.net Perl
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Windows Forms
Mobile Internet
Web Form
Web Services
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ADO , .Net AND XML – Data Access Layer
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.Net Class Library
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CLR – Different for diff OS- same as JVM in Java
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OS
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Responsibility of CLR-

• Memory management- Reference count, If not incremented, then garbage collected.
  
• CTS- Common Type System -Language Interoperability
  
• Life Cycle Monitoring

After interpreting & compiling, we get the .exe file.

Source Code-(Compilation) -> MSIL -->JIT compiler --> Native Code


Some more learning-

• MSIL- Microsoft Intermediate language

• To run the app from command prompt, either give the path in the environment variable or use the command prompt from the the VS folder.
• To run a specific file after compiling, right click on the solution & change the "startup project" to the project that you want to run.
• Native Executable vs Portable Executable -
  Native executable is a normal executable file which is directly executed from the OS- like notepad.exe .
  Portable executable -executed by CLR on top of OS.
  

• Managed Vs unmanaged code -
  Managed - which is interpreted by the CLR,
  Unmanaged - To use Legacy code including a COM component.
• Difference of Build vs Debug-
  Build- .exe file is created
  Debug- Executes line by line but exe file is not created.
• In 1 application, there should be only 1 entry point.