C#

[XmlRootAttribute(ElementName = "WildAnimal", IsNullable = false)]
class Config
    {
    public int a;
    public int b;
    public SimpleClass classinst;

    public Config()
    }

class SimpleClass
    {
    public int c;
    public int d;

    public SimpleClass()
    }

        public void SerializeObject(Object pObject)
        {
            try
            {
                FileStream fileStream = new FileStream(s_strBaseThemeDirectory +
                    @"\" +m_strName+".xml", FileMode.CreateNew, FileAccess.ReadWrite);
                XmlSerializer xs = new XmlSerializer(typeof(Config));
                XmlTextWriter xmlTextWriter = new XmlTextWriter(fileStream, Encoding.UTF8);

                xs.Serialize(xmlTextWriter, pObject);
                fileStream = (FileStream)xmlTextWriter.BaseStream;
                fileStream.Close();
            }
            catch (Exception e)
            {
                Utilities.Trace("Error Serializing the XML: " + e.ToString());
            }
        }

        public Configuration DeserializeObject(string strName)
        {

            FileStream fileStream = new FileStream("filename.xml", FileMode.Open, FileAccess.ReadWrite);

            XmlSerializer xs = new XmlSerializer(typeof(Config));
            XmlTextWriter xmlTextWriter = new XmlTextWriter(fileStream, Encoding.UTF8);
            return (Configuration)xs.Deserialize(fileStream);
}

public class myClass
{
	public event EventHandler ControlVlaueChanged;
	public event DataGridViewCellEventHandler DataGridViewCellDataChanged;

	public FormEx()
        	{
            		this.ControlVlaueChanged += new EventHandler(this.OnControlValueChanged);
	}	
	
	private void myMethod(Control control)
	{
		if (control is DataGridView) (control as DataGridView).CellValueChanged += (DataGridViewCellEventHandler)this.ControlVlaueChanged;	
	}

	protected virtual void OnControlValueChanged(object sender, EventArgs e)
       	{
            		// some general works
        	}
}

protected override void OnPaint(PaintEventArgs e)
{
    Graphics g = e.Graphics;

    using(Region boardRegion = new Region(new Rectangle(ClientRectangle.X, ClientRectangle.Y,
        (int)(ClientRectangle.Width), (int)(ClientRectangle.Height * boardRegionSize))))
    {
        g.Clip = boardRegion;
        using(Bitmap boardImage = new Bitmap(board.ImagePath)){
            g.DrawImage(boardImage, board.X, board.Y);
        }
    }
    base.OnPaint(e);
}

private void CMGame_KeyDown(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Up)
        board.Y -= 30;
}

this.KeyDown += new System.Windows.Forms.KeyEventHandler(this.CMGame_KeyDown);

public interface Interface1
    {
        void myMethod();
    }

public class Class1 : Interface1
    {

        #region Interface1 Members

        private void myMethod()
        {
            throw new Exception("The method or operation is not implemented.");
        }

        #endregion
    }