Common Language Runtime in C#

1.  The Common Language Runtime (CLR) is the programming (Virtual Machine component) that manages the execution of programs written in any language that uses the .NET Framework, for example C#, VB.Net.
2. The information about the environment, programming language, its version and what class libraries will be used for this code are stored in the form of metadata with the compiler that tells the CLR how to handle this code.
3. The CLR allows an instance of a class written in one language to call a method of the class written in another language.