Replace a string using StringBuilder

Set a String −

StringBuilder str = new StringBuilder("Fitness is important");

Use the Replace() method to replace a string −

str.Replace("important", "essential");

The following is the code to replace a string using StringBuilder −

Example

 Live Demo

using System; using System.Text; class Demo {    static void Main() {       // Initial String       StringBuilder str = new StringBuilder("Fitness is important");       Console.WriteLine(str.ToString());       // Replace       str.Replace("important", "essential");       // New String       Console.WriteLine(str.ToString());       Console.ReadLine();    } }

Output

Fitness is important Fitness is essential