How do i select data base on ID DESC And UserName

Hi i want to select data from table using username and DataID DESC, Is that possible?
the reason is that i want the latest data in the table to be shown on top and as well select by username.
I did it but got an error:
String strConnString = ConfigurationManager.ConnectionStrings["con"].ConnectionString; SqlConnection conntt = new SqlConnection(strConnString); // SqlCommand cmdd55 = new SqlCommand(); SqlCommand cmd9 = new SqlCommand("SELECT ImageName,ImagePath,UserName FROM Bannertb WHERE UserName =@UserName ORDER BY BannerID DESC", conntt); // cmdd55.CommandType = CommandType.StoredProcedure; // cmd5.CommandText = "ProfilePictureDetailsView1"; // cmd5.Parameters.AddWithValue("@OrderDate", DateTime.Today); cmd9.Parameters.AddWithValue("@UserName", this.User.Identity.Name); cmd9.Connection = ...