Using a delegate to pass data between two forms

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace Delegates
{
	/// <summary>
	/// Summary description for Form2.
	/// </summary>
	public class Form2 : System.Windows.Forms.Form
	{
        private System.Windows.Forms.Button btnForm2;
        private System.Windows.Forms.TextBox txtForm2;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

        // Defines a delegate. Sender is the object that is being returned to the other form.
        public delegate void PassControl(object sender);

        // Declare a new instance of the delegate (null)
        public PassControl passControl;


		public Form2()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

        public TextBox getText() 
        {
            return txtForm2;
        }
		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if(components != null)
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
            this.btnForm2 = new System.Windows.Forms.Button();
            this.txtForm2 = new System.Windows.Forms.TextBox();
            this.SuspendLayout();
            // 
            // btnForm2
            // 
            this.btnForm2.Location = new System.Drawing.Point(64, 104);
            this.btnForm2.Name = "btnForm2";
            this.btnForm2.Size = new System.Drawing.Size(144, 23);
            this.btnForm2.TabIndex = 0;
            this.btnForm2.Text = "Pass data and close form";
            this.btnForm2.Click += new System.EventHandler(this.btnForm2_Click);
            // 
            // txtForm2
            // 
            this.txtForm2.Location = new System.Drawing.Point(88, 48);
            this.txtForm2.Name = "txtForm2";
            this.txtForm2.TabIndex = 1;
            this.txtForm2.Text = "I am a TextBox";
            // 
            // Form2
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(272, 189);
            this.Controls.Add(this.txtForm2);
            this.Controls.Add(this.btnForm2);
            this.Name = "Form2";
            this.Text = "Form2";
            this.ResumeLayout(false);

        }
		#endregion


        private void btnForm2_Click(object sender, System.EventArgs e)
        {
            // If the delegate was instantiated, then call it
            if (passControl != null)
            {
                passControl(txtForm2);
            }

            // Close form
            this.Hide();        
        }
	}
}