handleevent.cs

vc的原码例子12 vc的原码例子12

using System;

public class ReactorEventArgs : EventArgs
{
	public ReactorEventArgs(int temp)
	{
		AlarmTemp = temp;
	}

	public int AlarmTemp;
}


class NuclearReactorMonitor
{
	public delegate void TempHandler(object source, ReactorEventArgs e);

	public event TempHandler HighTemp;

	public NuclearReactorMonitor()
	{
		this.temp = 0;
	}

	public void SetTemp(int temp)
	{
		if (temp > 200)
		{
			if (HighTemp != null)
              HighTemp(this, new ReactorEventArgs(temp));
		}
		else
			this.temp = temp;
	}

	public int temp;
}

class Generator 
{
	public Generator() 
	{
		GeneratorMonitor = new NuclearReactorMonitor();

	    GeneratorMonitor.HighTemp += new NuclearReactorMonitor.TempHandler(TemperatureHandler);
	}

	public void TemperatureHandler(object source, ReactorEventArgs e)
	{
		Console.WriteLine("Handling event -- Temp: {0}", e.AlarmTemp);
	}

	public void AssignTemp(int temp)
	{
		GeneratorMonitor.SetTemp(temp);
	}

	NuclearReactorMonitor GeneratorMonitor;
}

public class ClassEvent
{
	public static void Main()  
	{
       Generator Site = new Generator();

       Site.AssignTemp(250);
	}
}