copy 2 database contains to one database

File.Copy("file-a.txt", "file-b.txt", true);
File.Copy(@"" + Application.StartupPath + "\\ms.mdb" , @"" + Application.StartupPath + "\\data\\temporary.mdb",true);
im using this for copy one database content to tempory database, but i have another database name "td2012.mdb" that want to copy to tempory.mdb (after copying ms.mdb tables and td2012 tables need to contain in temp.mdb)
please help to to it,thank you......