Click here to Skip to main content
Click here to Skip to main content
Add your own
alternative version

Implementing Observer, Strategy, and Decorator Design Patterns on a Temperature Model

, 27 Feb 2006
This article demonstrates the use of the Observer, Strategy, and Decorator patterns in C#.
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;

namespace MVC_Example
{
	/// <summary>
	/// Summary description for FarenheitScroll.
	/// </summary>
	public class CelsiusScroll : System.Windows.Forms.Form, IView
	{
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;
		private System.Windows.Forms.HScrollBar hScrollBarTemperature;

		public ValueStrategy valueStrategy;
		
		public int MaxTemp = 300;
		public int MinTemp = -200;

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

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

		/// <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.hScrollBarTemperature = new System.Windows.Forms.HScrollBar();
			this.SuspendLayout();
			// 
			// hScrollBarTemperature
			// 
			this.hScrollBarTemperature.Location = new System.Drawing.Point(16, 8);
			this.hScrollBarTemperature.Name = "hScrollBarTemperature";
			this.hScrollBarTemperature.Size = new System.Drawing.Size(232, 17);
			this.hScrollBarTemperature.TabIndex = 0;
			this.hScrollBarTemperature.Scroll += new System.Windows.Forms.ScrollEventHandler(this.hScrollBarTemperature_Scroll);
			// 
			// CelsiusScroll
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(264, 35);
			this.Controls.Add(this.hScrollBarTemperature);
			this.Location = new System.Drawing.Point(200, 0);
			this.Name = "CelsiusScroll";
			this.StartPosition = System.Windows.Forms.FormStartPosition.Manual;
			this.Text = "CelsiusScroll";
			this.Load += new System.EventHandler(this.FarenheitScroll_Load);
			this.ResumeLayout(false);

		}
		#endregion

		public void TemperatureDisplay(object sender, EventArgs e)
		{

			hScrollBarTemperature.Value = (int)valueStrategy.Temperature;
		}

		private void FarenheitScroll_Load(object sender, System.EventArgs e)
		{
			hScrollBarTemperature.Maximum = MaxTemp;
			hScrollBarTemperature.Minimum = MinTemp;
			hScrollBarTemperature.Value = (int)valueStrategy.Temperature;
			
		}

		private void hScrollBarTemperature_Scroll(object sender, System.Windows.Forms.ScrollEventArgs e)
		{
			valueStrategy.Temperature = hScrollBarTemperature.Value;
		}
	}
}

By viewing downloads associated with this article you agree to the Terms of Service and the article's licence.

If a file you wish to view isn't highlighted, and is a text file (not binary), please let us know and we'll add colourisation support for it.

License

This article has no explicit license attached to it but may contain usage terms in the article text or the download files themselves. If in doubt please contact the author via the discussion board below.

A list of licenses authors might use can be found here

About the Author

nashcontrol
Web Developer
Israel Israel
No Biography provided
Follow on   Twitter

| Advertise | Privacy | Mobile
Web01 | 2.8.140709.1 | Last Updated 27 Feb 2006
Article Copyright 2006 by nashcontrol
Everything else Copyright © CodeProject, 1999-2014
Terms of Service
Layout: fixed | fluid