关于table(ASP.NET的WEB控件)的问题

Question

大致就是下面这些了
TableRow row = new TableRow();
                    tblMenu.Rows.Add(row);
                    
                    if (ExpandWhich == i)
                    {
row.CssClass = "menu_title";
row.Attributes.Add("onmouseover","this.className='menu_title2'");
row.Attributes.Add("onmouseout","this.className='menu_title'");
                        cell = new TableCell();
                        cell.Width = Unit.Percentage(1.0);
                        cell.Controls.Add(AddImage("Images/minus.gif"));
                        row.Cells.Add(cell);                        link = new HyperLink();
                        link.Text = MenuNodes[currnode++].InnerText;
                        link.NavigateUrl = "NavBar.aspx?Expand=-1";                        cell = new TableCell();
                        cell.Width = Unit.Percentage(99.0);
                        cell.Controls.Add(link);                        row.Cells.Add(cell);