ASP.NET

<asp:Menu ID="Menu1" runat="server" OnMenuItemClick="Menu1_MenuItemClick" Orientation="Horizontal"><br />
	<Items><br />
		<asp:MenuItem Text="Main Menu" Value="Test"><br />
			<asp:MenuItem Text="Second" Value="secondform.aspx"></asp:MenuItem><br />
			<asp:MenuItem Text="Third" Value="thirdform.aspx"></asp:MenuItem><br />
		</asp:MenuItem><br />
	</Items><br />
</asp:Menu><br />
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server"><br />
</asp:ContentPlaceHolder>

protected void Menu1_MenuItemClick(object sender, MenuEventArgs e)<br />
      {<br />
            Server.Transfer(((System.Web.UI.WebControls.Menu)(sender)).SelectedValue);            <br />
        }

[DefaultProperty("Text")]
[ParseChildren(true), PersistChildren(false)]        

public class MyGrid : GridView
{            
  //... Some variable declarations    
  protected SizeItemCollection _PageSizeItems;    
  [Category("Paging")]            
  [Editor(typeof(CollectionEditor), typeof(System.Drawing.Design.UITypeEditor))]    
  [PersistenceMode(PersistenceMode.InnerDefaultProperty), MergableProperty(false)]    
  [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]    
  [Description("Items list for the PageSize selector DropDownList")]    
  public SizeItemCollection PageSizeItems    
  {        
    get { return (_PageSizeItems != null ? _PageSizeItems : new SizeItemCollection()); }   
  }    
  protected override void InitializePager(GridViewRow row, int columnSpan, PagedDataSource pagedDataSource)    
  {        
    //Here I create the pager row and added the DropDownList with the values in PageSiZeItems    
  }	    
  //... some more code ...        
}

public class SizeItem : Component
{    
  private int _size;    
  public SizeItem() { }    
  public SizeItem(int size)    
  {        
    _size = size;    
  }    
  public int Size    
  {        
    get { return _size; }
    set { _size = value; }    
  }             
}
public class SizeItemCollection : CollectionBase
{    
  //Here I implemented Add(), Insert(), Remove(), Contains(), IndexOf() and CopyTo()    
  //for my SizeItem class
}