In .Net 3.5 I can write a transactional code block as follows:

transacted(()=>
{
   using (SqlConnection connection = new SqlConnection(connectionString))
   {
      connection.Open();

      SqlCommand command1 = new SqlCommand(commandString1, connection);
      command1.ExecuteNonQuery();

      SqlCommand command2 = new SqlCommand(commandString2, connection);
      command2.ExecuteNonQuery();
   }
});

No need for using and no need to remember to call Complete at the end of the block.

To enable this I need to write just a few lines of code:

delegate void TransactedCodeDelegate();
void transacted(TransactedCodeDelegate txCode)
{
   using (TransactionScope ts = new TransactionScope())
   {
      txCode();
      ts.Complete();
   }
}