C# 2 - Ativar/desativar componentes com um RadioButton

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

namespace Tutorial
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void radioButton1_Click(object sender, EventArgs e)
        {
            Desativar(this, "textBox1");
        }

        private void radioButton2_Click(object sender, EventArgs e)
        {
            Desativar(this, "textBox2");
        }

        private void radioButton3_Click(object sender, EventArgs e)
        {
            Desativar(this, "textBox3");
        }

        private void Desativar(Form f, String nomeComponente)
        {
            foreach (Control c in f.Controls)
            {
                if (c is TextBox)
                {
                    if (c.Name == nomeComponente)
                        c.Enabled = true;
                    else
                        c.Enabled = false;
                }
            }
        }



    }
}