String Pool in C#

The string pool is a table that contains a single reference to each unique literal string declared in your application which use by the Common Language Runtime (CLR) to minimize string storage requirements.

string string1 = "xyz";
string string2 = "xyz";

According to above code string1 and string2 assign to same literal string (“xyz”). The string pool contains a single reference for these unique literal strings.

To confirm if the same reference has been assigned we can check for the HashCode for both the string object.
Code and Output as Follow.

Console.WriteLine("Hash Code of string1- " + string1.GetHashCode());
Console.WriteLine("Hash Code of string2- " + string2.GetHashCode());