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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.Collections;

namespace MVC_Example
{
	/// <summary>
	/// Summary description for Temperature.
	/// </summary>
	public class TemperatureModel
	{
		//***
		//*** Delegates
		//***
		public delegate void TemperatureChangedHandler(object sender, EventArgs e);

		//***
		//*** Events
		//***

		public event TemperatureChangedHandler TemperatureChanged;

		//***
		//*** Fields
		//***
		private double temperatureF = 32.0;

		//***
		//*** Properties
		//***

		public double F
		{
			get {return temperatureF;}
			set 
			{
				temperatureF = value;

				//raise event
				OnTemperatureChanged();
				
			}

		}

		public double C
		{
			get {return (temperatureF - 32.0) * 5.0 / 9.0;}
			set 
			{
				temperatureF = value*9.0/5.0 + 32.0;
				OnTemperatureChanged();
				
			}
		}
		

		// **
		// ** Constructors
		// **

		/// <summary>
		/// Temperature constructor with inital value
		/// </summary>
		/// <param name="Temperature">Initial temperature value</param>
		public TemperatureModel(double Temperature) 
		{
			temperatureF = Temperature;
			
		}

		/// <summary>
		/// Default Temperature constructor
		/// </summary>
		public TemperatureModel()
		{
	
		}
		
		//***
		//*** Methods
		//***

		private void OnTemperatureChanged()
		{
			TemperatureChanged(this, new EventArgs());
		}
		
	}

}

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nashcontrol
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Israel Israel
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Web03 | 2.8.141022.1 | Last Updated 27 Feb 2006
Article Copyright 2006 by nashcontrol
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