Difference between string class & stringbuilder class in c#

Question

Can any one please explain Difference between string class and stringbuilder class in c#

Manish Kumar Choudhary · Answer

Main Differences between String and StringBuilder String StringBuilder String is immutable  meaning that once you created string object then you can't modify it StringBuilder is mutable  meaning that once you created string builder object then you can modify or append without creating a new instance for every time Any operation that appears to change the string it creates a new instance of string type in memory Any operation that appears to modify or append new string it doesn't create a new instance of string type in memory Required Class is System.String Required Class is System.Text.StringBuilder Required Namespace is System Required Namespace is System.Text String is slower as compare to string builder object when we deals with large size of strings StringBuilder is faster as compare to string object when we deals with large size of strings String is efficient when we deals with static or smaller size of string means we don't need to modify later on StringBuilder is efficient when we deals with dynamic or larger size of string means we want to modify that string later on

Ezhil arasan · Answer

Thanks for your answer Manish.