String pool technology

When compiling Source code. Our compiler must process every text constant string and put it into the metadata. If the same string appears multiple times and is put into the metadata, the generated file will expand sharply.

To solve this problem, many compilers (including C # compilers) write such strings only once in the metadata of the generated module. ThenCodeChanged to a string in the reference metadata. This ability to combine a string that appears multiple times into an instance can greatly reduce the size of the generation module. In fact, the C/C ++ compiler has been in use for many years.

Refer to the. NET FrameworkProgramDesign (revision)

PS: I hope it will be helpful to my questions about msolap yesterday.