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#C# String is Immutable in C#

There is a term called immutable, which means the state of an object can't be changed after is has been created. 

 A string is an immutable type. The statement that a string is immutable means that, once created, it is not altered by changing the value assigned to it.

 If we try to change the value of a string by concatenation (using + operator) or assign a new value to it, it actually results in creation of a new string object to hold a reference to the newly generated string. It might seem that we have successfully altered the existing string. But behind the scenes, a new string reference is created, which points to the newly created string.

string s1="Hi";
string s2=s1;
s2=s2+"Raj";


s1  -> pointer to data "Hi"
s2  -> pointer to date "Hi" -> pointer to data "Hi Raj"

here s2 is pointing to new data. that is s2 pointer is changed.(Immutable)

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