Difference Between Value Type And Reference Type

Value Type in C#

The value type-based objects directly contain the value. Here there is no need to create an instance with values.

The value type variables are.

1. struct
2. enum

Example

using System;
namespace ConsoleApplication1
{
    class Program
    {
        struct Point
        {
            private int x, y;

            public Point(int x, int y)
            {
                this.x = x;
                Console.WriteLine(x);
                Console.ReadLine();
                this.y = y;
            }
            public int X
            {
                get { return x; }
                set { x = value; }
            }
            public int Y
            {
                get { return y; }
                set { y = 3; }
            }
        }
        static void Main(string[] args)
        {
            Point p = new Point(2, 3);
            p.X = 9;
            int x = p

In the above program, we have used structure variables like.

Point p = new Point(2, 3);

Here we are passing value to x and y. So, we call this a value type.

Reference Type in C#

The reference type variables will create only instances but pass any values.

Example

using System;
using System.Windows.Forms;
namespace ConsoleApplication2
{
    class Program
    {
        static void Main(string[] args)
        {
            Application.Run(new frm());
        }
    }
    class frm : Form
    {
        public frm()
        {
            Button b = new Button();
            this.Controls.Add(b);
            b.Click += new EventHandler(b_Click);
        }

        void b_Click(object sender, EventArgs e)
        {
            frm1 f = new frm1();
            f.Show();
        }
    }
    class frm1 : Form
    {
    }
}

In the above program, we created an instance to open another form, and other form variables were accessed only after creating an instance.