get last ID from database access

[ghasem]

hi
i use this code :

str1 = "select ID from Album";
            com = new OleDbCommand(str1, con);
            OleDbDataReader reader1 = com.ExecuteReader();
            reader1.Read();
            label2.Text = reader1["ID"].ToString() + "   picture";

butt read ID number 1 ... i want get last ID ?
please help !