designPattern/DesignPattern/Observer/TemperatureObserver/MainForm.cs

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

namespace Observer.TemperatureObserver
{
	class MainForm : Form
	{
		public static Temperature Temp { get; } = new Temperature();

		private int timeout;
		private TextBox textBox1;

		public MainForm(int timeout)
		{
			this.timeout = timeout;
			this.textBox1 = new TextBox();
			this.Controls.Add(this.textBox1);

			this.Load += TextBoxForm_Load;
		}

		private void TextBoxForm_Load(object sender, EventArgs e)
		{
			Temp.Changed += (s, eArgs) =>
			{
				this.Invoke(new Action(() =>
				{
					textBox1.Text = Temp.Fahrenheit.ToString();
				}));
			};

			Form trackBarForm = new TrackBarForm();
			trackBarForm.Show();

			Task.Factory.StartNew(() => Temp.StartMeasure(timeout));
		}
	}
}