C#

namespace FactoryTest
{
	/// <summary>
	/// Summary description for Factory.
	/// </summary>
	public  class Factory
	{
		// private constructor, only static methods...
		private Factory()
		{
		}
		public static FactoryObj Makeobj()
		{
			FactoryObj fObj = null;
			fObj = new FactoryObj();
			return fObj;
		}
		public class FactoryObj
		{
			// 'internal protected' constructor so only containing class can instantiate
			internal protected FactoryObj()
			{
				// constructor logic, could include try/catch so can't throw
				// exception
			}
			// public properties and methods...
			public int One
			{
				get {return	1;}
			}
			public void DoNothing ()
			{}
		}
	}
	public class TestIt
	{
		public TestIt()
		{
		}
		public void t1()
		{
			Factory.FactoryObj Obj = Factory.Makeobj();
			Obj.DoNothing();
			int one = Obj.One;
		}
	}
}

protected override CreateParams CreateParams 
{
   get
   {
      System.Windows.Forms.CreateParams param = base.CreateParams;
      //we need to prevent to control calling the vscroll or hscroll
      //vscroll
      if ((0x00200000 & param.Style) != 0)
      {
         param.Style -= 0x00200000;
      }
      //hscroll
      if ((0x00100000 & param.Style) != 0)
      {
         param.Style -= 0x00100000;
      }
      return param;
   }
}