C#

interface IDoSomething
{
   void DoSomething();
}

interface IDoSomethingFactory
{
   IDoSomething CreateDoSomething();
}

public class ConcreteDoSomething : IDoSomething
{
   public void DoSomething(){Console.WriteLine("Done");}  
}

public class ConcreteDoSomethingFactory : IDoSomethingFactory
{
   public IDoSomething CreateDoSomething()
   {
      return new ConcreteDoSomething();
   }
}

/// Client Code ///

function DoFunkyStuff(IDoSomethingFactory factory)
{
   IDoSomething myObj = factory.CreateDoSomething();
   myObj.DoSomething();
}

private void button1_Click(object sender, System.EventArgs e)
{
        // Set data into the clipboard.
        Point pt = new Point(100, 100);
        Clipboard.SetDataObject(pt, true);
}

private void button2_Click(object sender, System.EventArgs e)
{
    // Get data back from the clipboard
    IDataObject obj = Clipboard.GetDataObject();
    if(obj.GetDataPresent(typeof(Point)))
    {
        Point pt = (Point)obj.GetData(typeof(Point));
        MessageBox.Show(string.Format("X:{0} Y:{1}",
                        pt.X.ToString(), pt.Y.ToString()));
    }
}

<br />
for (i = 1; i < 3; i++)<br />
{<br />
     // new control created programmatically (three total)<br />
     Control ctrl = new Control()<br />
<br />
     // process control using i, and then pass back to ctrlHold<br />
     ctrlHold = PositionControl(ctrlName, i, loc_x ....)  <br />
<br />
<br />
:confused::confused::confused:<br />
     // evaluate whether control is control 3, so it could be parented to control 1<br />
     if (i == 3)<br />
     {<br />
         // how to parent to control 1 ?????<br />
         ctrl.Controls.Add(ctrl ??????? how would it know control 2 ???)<br />
     }<br />
}<br />