What are CLR generations ?

CLR is Common Language Runtime. it is enviroment within which application is executed. It is a execution engine. When .Net program is compired, the output of compiler is not execulatable code but the file contains special tyoe of code that is called MSIL (Mircrosoft Intermediate Language) or CIL Common Intermediate Landguage That are independent of any specific CPU. The Job of CLR is to convert the intermediate code into executable code , when program is executed making the program to run in any inviroment.

CLR provides the .net programs an environment to run or execute their programs....

Common Language Runtime which responsible of convert Microsoft Intermediate language to Machine Language by run the Just In Time Compiler.

This is the concept of memory management and it is handled by garbage collector(GC) of CLR.

GC cleans up the unused managed objects and for this it performs collections and the objects will be placed in different generations like gen 0,1,2 depending on the usage of the object i.e., the most active object living in gen 0 and so on