Can anyone show me How to add a button on top of a dymanically programmed button

     var contentPanel = new HtmlGenericControl();

                foreach (DataRow row in dt.Rows)
                    contentPanel.InnerHtml +=
                        string.Format("<a class='tile ol-transparent bg-myGreen brand tile double' href='{0}' target='_BLANK'>{1}</a>",
                            row["LINKURL"], row["LNGNAME"]);


This is my code for dynamically producing one button on top of this i need to add a second??

Do you want it on a row above the other one or sitting right on top of it basically obscurring?