String and StringBuilder in C#

These two type of class use for character type of values but 'String' is Immutable and resides within System Namespace .  StringBuilder is mutable and it resides "System.Text" Namespace.

• Mutable -->means -->change in value
• Immutable -->means -->No change in value

I have full explained what is mutable and immutable with the help of  example which is given below:

using System;
using System.Text;
namespace String_stringbulider
{
    class Program
    {
        public class student
        {
            public void show(params String[] str)
            {
                if (str.Length > 0)
                {
                    for (int i = 0; i < str.Length; i++)
                    {
                        Console.WriteLine(str[i]);
                        Console.ReadLine();
                    }
                }
                else
                {
                    Console.WriteLine("No value found");
                    Console.ReadLine();
                }
            }
        }
        static void Main(string[] args)
        {
            String msg = "Hello";
            StringBuilder sb = new StringBuilder("Hey");
            String sms = msg.Insert(5,"Employee");
            sb.Insert(3,"Student");
            Console.WriteLine(msg);
            Console.WriteLine(sb);
            Console.WriteLine(sms);
            Console.ReadLine();

        }
    }
}

OUTPUT:-

Description:-
1.  Here First i have created a String variable msg and assigned a value "Hello".
Ex:  String msg = "Hello";
2. After that i have created a StringBuilder variable sb and assigned a value "Hey".
Ex: StringBuilder sb = new StringBuilder("Hey");
3. I have created a String variable sms again ,after that insert a value "Employee" in msg variable at fifth position (last of the Hello word) and assigned these value to the sms variable.
Ex: String sms = msg.Insert(5,"Employee");
4. After that i have inserted "student" in sb variable at third position(last of the Hey word).
Ex:  sb.Insert(3,"Student");
5. After that i have printed each variable values :-

• msg variable printed only Hello.because value of msg variable did not change after the insert value Employee. So you can easily say that String are immutable .
• When i have printed the value of sb then i have found that StringBuilder variable sb value changed after insert thC value student.So you can easily say that StringBuilder are mutable .

For More:-

1. Structure and class
2. Namespace in NET
3. oops concepts
4. Create setup file with Database
5. Host Asp.Net Application on IIS Server

I hope this is helpful for you.

To Get the Latest  Free Updates Subscribe
Click below for download whole application

          Download