StringBuilder in C#

using System.Text;

using System;

public class clsStringBuilder

{

    public void Main()

    {

        //****************************************************************************************

        // Example #1: StringBuilder Append(string) - most common way stringbuilder is used

        // Adds the specified string or string representation of the specified value to the end

        // of the string

        //****************************************************************************************

        Console.WriteLine("Example #1: Simple StringBuilder Append(string) ");

        StringBuilder sb = new StringBuilder();

        sb.Append("First Line");

        sb.Append("\n");

        sb.Append("Second Line");

        Console.WriteLine(sb.ToString());

        //write blank line to make output easier to read

        Console.WriteLine();

        //Append(string, startIndex, count)

        //****************************************************************************************

        // Example #2: StringBuilder Append(string, startIndex, count)

        // Adds a substring of the specified string, starting with the specified

        // position and having the specified length, to the end of the string

        //****************************************************************************************

        Console.WriteLine("Example #2: StringBuilder Append(string, startIndex, count)");

        StringBuilder sb2 = new StringBuilder();

        sb2.Append("The dog and cat ");

        sb2.Append("love to fight and play", 0, 13);

        //take love to fight and add to end of prev string

        Console.WriteLine(sb2.ToString());

        //write blank line to make output easier to read

        Console.WriteLine();

        //Insert(index, string[, count])

        //****************************************************************************************

        // Example #3: StringBuilder Insert(index, string[, count])

        // Inserts the specified string or a string representation of the specified

        // value at the specified position in the string the specified number of

        // times. If the count is ommitted, a single copy of the string is inserted.

        //****************************************************************************************

        Console.WriteLine("Example #3: Insert(index, string[, count])");

        StringBuilder sb3 = new StringBuilder();

        sb3.Append("This is the initial sentence");

        sb3.Insert(20, "and modified ", 2);

        Console.WriteLine(sb3.ToString());

        //write blank line to make output easier to read

        Console.WriteLine();

        //Remove(startIndex,count)

        //****************************************************************************************

        // Example #4: StringBuilder Remove(startIndex,count)

        // Removes the specified number of characters from the string starting at

        // the specified position

        //****************************************************************************************

        Console.WriteLine("Example #4: StringBuilder Remove(startIndex,count)");

        StringBuilder sb4 = new StringBuilder();

        sb4.Append("This is the initial sentence");

        sb4.Remove(20, 8);

        Console.WriteLine(sb4.ToString());

        //write blank line to make output easier to read

        Console.WriteLine();

        //Replace(oldString,newString [,startIndex][,count])

        //****************************************************************************************

        // Example #5: StringBuilder Replace(oldString,newString [,startIndex][,count])

        // Replaces all occurences of the old string with the new string starting

        // at the specified position and continuing for the specified number of characters.

        // If you omit startIndex, it starts at beginning

        // If you omit count, it does entire string

        //****************************************************************************************

        Console.WriteLine("Example #5: StringBuilder Replace(oldString,newString [,startIndex][,count])");

        StringBuilder sb5 = new StringBuilder();

        sb5.Append("This is the initial sentence");

        sb5.Replace("initial", "new");

        Console.WriteLine(sb5.ToString());

        //write blank line to make output easier to read

        Console.WriteLine();

        //Prevent console from closing before you press enter

        Console.ReadLine();

    }

}

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

namespace CSharp_Syntax

{

    class Program

    {

        static void Main(string[] args)

        {

            //LanguageBasics

            clsStringBuilder myStringBuilder = new clsStringBuilder();

            myStringBuilder.Main();

        }

    }

}