C#

protected override void OnKeyPress(System.Windows.Forms.KeyPressEventArgs e)
{

        if(e.KeyChar.ToString() == "e" || e.KeyChar.ToString() == "E")
            //Exit loop here.
}

/ So code could be something like this…
//no idea if this way would work, up to you if want to try it out

static void Main(string[] args)
{
	bool bLoop = true;

	YourThreadedClass ytc = new YourThreadedClass(ref bLoop);
	ytc.Start();

// ytc will check for a key press using System.Console.Read() and change the 
// value of bLoop when the key you want is pressed

	while(bLoop)
	{
	//do something
	}
}

class Class1
	{
		private bool bLoop;
		private Thread myThread;
		[STAThread]
		static void Main(string[] args)
		{
			Class1 c1 = new Class1();
		}

		public Class1()
		{
			bLoop = true;
			KeyReader kr = new KeyReader();	
			kr.KeyEvent += new KeyReader.KeyEvents(KeyEvent);
			myThread = new Thread(new ThreadStart(kr.ThreadRun));
			myThread.Start();
			while(bLoop)
			{
				System.Console.WriteLine(System.DateTime.Now);
			}
			myThread.Abort();// not sure if correct
		}
		
		private void KeyEvent(int k)
		{
			System.Console.WriteLine("Key Event");
			if(k=='e'|| k=='E')
				bLoop = false;
		}
	}

	public class KeyReader    
	{
		public delegate void KeyEvents(int c);  
		public event KeyEvents KeyEvent;

		public void ThreadRun( )
		{
			bool loop = true;
			while(loop)
			{
				int ch = System.Console.Read();

				if(KeyEvent != null)
				{
					System.Console.ReadLine();//remove the endline character from stream
					KeyEvent(ch);
				}
			}
		}
	}

// Remember the Hashtable works with objects, so you need to cast back
// to the original type
FunctionDelegate d = table["myfunc"] as FunctionDelegate;
 
// Call the method pointed to by the delegate
d(str);

public delegate string HoursToSecsCallbackType(string hours);
HoursToSecsCallbackType fp = new HoursToSecsCallbackType(Utils.HoursToSecs);
Hashtable table = new Hashtable();
table.Add("hours", fp);

string column = "hours";
TextBox textbox = (TextBox)objArgs.Item.FindControl(column);
if (table.ContainsKey(column))
{
    HoursToSecsCallbackType fp = (HoursToSecsCallbackType) table[column];
    textbox.Text = fp(textbox.Text);
}

using System; 
using System.IO;




class functions
{


	public static void writefile()
	{
		//Create a file 'nish.txt' in the current directory 
		FileStream fs = new FileStream("data.txt" , FileMode.Create, FileAccess.ReadWrite); 		
		
		//Now let's put some text into the file using the StreamWriter
		StreamWriter sw = new StreamWriter(fs); 		
		sw.WriteLine("Testing\n TESTING!\n yay!"); 

		sw.Flush();
	}	
		
}

class app
{

	public static void Main()
	{
	
		Console.WriteLine("Before writefile()");
		
		functions.writefile();
		
		Console.WriteLine("After writefile()");

	}



}