what is string and stringbuilder in c#

 what is string and stringbuilder in c#

In C#, both string and StringBuilder are used to handle text data, but they differ in their mutability and performance characteristics: string is immutable, while StringBuilder is mutable, making StringBuilder more efficient for string manipulation. 

a.string (Immutable):

Once a string object is created, its value cannot be changed. 

Any operation that appears to modify a string (like concatenation) actually creates a new string object with the modified value. 

This immutability can lead to performance issues when performing numerous string manipulations or concatenations, as it requires creating many new objects. 

b.StringBuilder (Mutable):

StringBuilder allows you to modify a string's content directly without creating new objects. 

It's designed for scenarios where you need to perform multiple string modifications or concatenations. 

StringBuilder is more memory-efficient than repeatedly creating new string objects. 

You can use the Append() method to add text to the StringBuilder object.