why const value can not be changed during runtime? Explain please

Hi Anand,

 

Please refer this article whic has good exmple of Const and readonly variable.

 

https://www.c-sharpcorner.com/UploadFile/0c1bb2/read-only-and-constant-in-C-Sharp/ 

No, you cannot change the value of a constant filed after its declaration. In the example below, the constant field PI is always 3.14, and it cannot be changed even by the class itself. In fact, when the compiler encounters a constant identifier in C# source code (for example, PI), it substitutes the literal value directly into the intermediate language (IL) code that it produces. Because there is no variable address associated with a constant at run time, const fields cannot be passed by reference.