DOT NET: How it works:

     Application code is written using a .NET – compatible language language such as C#

     

T   That code is compiled into MSIL, which is stored in an assembly.

   

   When  this code is executed (either in its own right if it is an executable or when it is used from other code), it must first be compiled into native code using a JIT compiler

   

   The native code is executed in the context of the managed CLR, along with any other running applications or processes.