. NET constant field const

In C #, when the constant symbol const is used, the compiler first finds this symbol from the metadata of the module defining the constant and directly retrieves the constant value, then embed it into the compiled IL code. Therefore, the constant does not need to be allocated any memory during runtime. Of course, the constant address cannot be obtained or referenced.

The following code:

   1: public class ConstTest

   2: {

   3:     public const int ConstInt = 1000;

   4: }

Compile it into a ConstTest. dll file and reference this ConstTest. dll file in the following code.

   1: using System;

   2:  

   3: class Program

   4: {

   5:     public static void Main(string[] args)

   6:     {

7: Console. WriteLine (ConstTest. ConstInt); // The result output is 1000;

   8:     }

   9: }

Compile and run the main.exe program, and the output is 1000. Then