Question

can any one explain with examples

---

Related Discussion: Most efficient way to concatenate strings?

Answer 1

You cannot edit the value of a string, each method of the string object returns a new string instead of altering the original. StringBuilder on the other hand can alter it’s content (adding new strings for example).

string original = 'the brown fox jumped over the lazy dog'; string altered = original.Insert(original.IndexOf('fox'), 'cat'); // altered = the brown cat jumped over the lazy dog 

You cannot change the content of the original string unless you create a new string, or re-reference the instance to another string object.