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namespace Test { class Program { static void Main(string[] args) { A a = new A(); a.MyString = "Metallica "; PrintA(a); Console.WriteLine(a.MyString); string name = "Linkin "; Print(name); Console.WriteLine(name); Console.ReadLine(); } static void PrintA(A a) { a.MyString = a.MyString + "Rocks"; Console.WriteLine(a.MyString); } static void Print(string text) { text = text + "Park"; Console.WriteLine(text); } } class A { public string MyString { get; set; } } }

Output:

Metallica Rocks

Metallica Rocks

Linkin Park

Linkin

My question here is that, if string is a reference type (i.e. a class) then why does it not change value of the variable name after the method Print() is called, like it happens for reference variable a's member MyString.

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    "reference type" does not mean that it would be passed by reference. Commented Dec 5, 2015 at 18:56

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In .NET, String is a reference type. It is passed by reference. However, when you make a change to the string value, another new copy is created of it leaving the original one unchanged. This is why it acts as if it is being sent by value

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No. Pass by value vs pass by reference and value type vs reference types are completely different subjects. They are not related.
This answer is wrong. Strings are a reference type, but he reference is passed by value. It also is not copied when you make a change, but instead a new string is created and assigned to the reference; because the reference was passed by value the change is not reflected to the caller.

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