Access and modify properties of textbox from within another class

txtbox_modify

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

/*
Shows how we can access Form1's default TextBox (textBox1) from within another class, by passing into that 
other class's constructor a refence to Form1. We create public properties for the form's 'textBox1' TextBox, 
because the textbox is private to Form1 (see the declaration in Form1Designer.cs, which looks like this):

private System.Windows.Forms.TextBox textBox1;

By passing a reference to Form1 into the other class's constructor, and then utilizing the properties we 
created, we can alter Form1's textbox's .Width and .Text properties from another class. 
*/

namespace testApp {
    public partial class Form1 : Form {

        public Form1() {
            InitializeComponent();
        }

        public string TextValue { 
            set { textBox1.Text = value; } 
        } 
 
	    public int TextWidth { 
            set { textBox1.Width = value; } 
        }

        private void button1_Click(object sender, EventArgs e) {
            OtherClass oc = new OtherClass(this);
        }
    }

    public class OtherClass{
        Form1 f2;
        public OtherClass(Form1 f) {
            f2 = f;
            f2.TextValue = "Hello World!";
            f2.TextWidth = 200;
        }

    }
}