Create Dyanamic Controls and Control Events..

Coding of this Form:

using System;

using System.Collections.Generic;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Threading;

namespace WindowsFormsApplication1

{

    public partial class Form2 : Form

    {

        TextBox[] rch = new TextBox[3];

        int x = 0, y = 0;       

        public Form2()

        {

            InitializeComponent();

            for (int i = 0; i < rch.Length; i++)

            {

                rch[i] = new TextBox();

                rch[i].Width = 150;

                rch[i].Height = 150;

                rch[i].Name = "Textbox" + i;

                rch[i].Location = new Point(x, y);

                this.Controls.Add(rch[i]);

                y += 20;

            }

            rch[0].Enter += new EventHandler(ClickMe1);

            rch[1].Enter += new EventHandler(ClickMe2);

            rch[2].Enter += new EventHandler(ClickMe3);

            Button btn = new Button();

            btn.Width = 50; btn.Height = 30;

            btn.Name = "BtnName";

            btn.Text = "Zoom";

            btn.Location = new Point(113, 211);           

            this.Controls.Add(btn);

        }

        private void ClickMe1(object sender, EventArgs e)

        {

            MessageBox.Show("Its 1");

        }

        private void ClickMe2(object sender, EventArgs e)

        {

            MessageBox.Show("Its 2");

        }

        private void ClickMe3(object sender, EventArgs e)

        {

            MessageBox.Show("Its 3");

        }

    }

}