C# string reference type?

Question

I know that \"string\" in C# is a reference type. This is on MSDN. However, this code doesn\'t work as it should then:

class Test
{
    public static void          


        

Answer 1

"A picture is worth a thousand words".

I have a simple example here, it's similar to your case.

string s1 = "abc";
string s2 = s1;
s1 = "def";
Console.WriteLine(s2);
// Output: abc

This is what happened:

• Line 1 and 2: s1 and s2 variables reference to the same "abc" string object.
• Line 3: Because strings are immutable, so the "abc" string object do not modify itself (to "def"), but a new "def" string object is created instead, and then s1 references to it.
• Line 4: s2 still references to "abc" string object, so that's the output.