The below snippet might help you:
DataTable dt=GetMonthsFromDB();
dropdownlist1.DataSource=dt;
dropdownlist1.DataTextField=dt.Columns[0].ToString() + "Months";
dropdownlist1.DataValueField=dt.COlumns[0].ToString();
dropdownlist1.DataBind();
The above snippet assumes that you have only one column coming in your datatable dt, if no, then you can change the column index accordingly..This should work..try it..
-Anurag