Immutable of string in c#

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C#

hi
Can any one explain me "string immutable in c#"

Posted 6-Jul-12 23:26pm

PriyaRajavelu

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Sergey Alexandrovich Kryukov 7-Jul-12 23:03pm

The answer: "yes, many can explain that". :-)
Was that a question?
--SA

2 solutions

Solution 1

Read this,

http://stackoverflow.com/questions/2365272/why-net-string-is-immutable[^]

and this.

http://channel9.msdn.com/Forums/TechOff/58729-Why-are-string-types-immutable-in-C[^]

A nice google search would solve all your doubts.

Cheers

Posted 6-Jul-12 23:28pm

Mario Majčica

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OriginalGriff · Accepted Answer · 2012-07-07T00:01:00

All .NET Strings are immutable - which means that once they are created, they cannot be changed in any way.
Every time you add or remove a character from a string, a new copy is created, and the previous version is unchanged.
An example:

C#

string orig = "Hello there!";
string copy = orig;
string replaced = orig.Replace("there", "World");
orig += " This is a test.";
Console.WriteLine(replaced);
Console.WriteLine(orig);
Console.WriteLine(copy);

The output is:

Hello World!
Hello there! This is a test.
Hello there!