public class MyButton: Control, IPostBackEventHandler {
 
  public event EventHandler Click;
 
  protected virtual void OnClick(EventArgs e) {
 
	 if (Click != null) {
		Click(this, e);
	 }   
  }
 
  public void RaisePostBackEvent(string eventArgument){
 
	 OnClick(new EventArgs());
  }
 
  protected override void Render(HtmlTextWriter output) {
	 output.Write("<INPUT TYPE = submit name = " + this.UniqueID + 
		" Value = 'Click Me' />");   
  }
}    
 

 
HtmlInputSubmit _control = new HtmlInputSubmit()
{
	Name = this.UniqueID
};
_control.RenderControl(output);
 

 
public class SearchBox : CompositeControl
{
    public event EventHandler Click;
    TextBox _TextBox = new TextBox();
    Button _Button = new Button()
    {
        CommandName = "Click",
        Text = "Search"
    };
 
    [Browsable(true)]
    [Category("Appearance")]
    public string Text
    {
        get
        {
            return _TextBox.Text;
        }
        set
        {
            _TextBox.Text = value;
        }
    }
 
    protected virtual void OnClick(EventArgs e)
    {
        if (Click != null)
        {
            Click(this, e);
        }
    }
 
    protected override bool OnBubbleEvent(object source, EventArgs args)
    {
        CommandEventArgs _CommandEventArgs = args as CommandEventArgs;
        if (_CommandEventArgs != null)
        {
            if (_CommandEventArgs.CommandName == "Click")
            {
                OnClick(args);
                return true;
            }
        }
        return false;
    }
 
    protected override void CreateChildControls()
    {
        this.Controls.Add(_TextBox);
        this.Controls.Add(_Button);
        base.CreateChildControls();
    }
}