Difference between String and StringBuilder in C#

Strings in C#

String is immutable in C# that would mean you couldn’t modify it after it is created. It creates a new object of string type in memory if you will perform any operation.

string str1 = "Welcome!";
// creates a new string instance
str1 += "Hello";
str1 += "World”;

StringBuilder in C#

StringBuilder is mutable in C#. This means that if an operation is performed on the string, it will not create a new instance every time. With that, it will not create new space in memory, unlike Strings.

StringBuilder str1 = new StringBuilder("");
str1.Append("Welcome!");
str1.Append("Hello World!");
string str2 = str1.ToString();

Ankith Reddy

Updated on 30-Jul-2019 22:30:23

• Related Questions & Answers
• Difference between StringBuffer and StringBuilder.
• Difference between StringBuilder and StringBuffer in Java
• What is the difference between String, StringBuffer and StringBuilder classes in Java explain briefly?
• What is the difference between StringBuffer and StringBuilder in java?
• What is the difference between a StringBuffer and StringBuilder in java?
• Java String, StringBuffer and StringBuilder Tutorial.
• Difference between String and StringBuffer.
• Difference Between Character Array and String
• Difference between string and StringBuffer in Java.
• Difference between String buffer and String builder in Java
• Replace a string using StringBuilder
• Converting String to StringBuilder in Java
• What is the difference between String and string in C#?
• Difference between string and char[] types in C++
• Difference between String and Character array in Java.