Using statement question

Question

I have two questions.

1) Should you always use a using statement on a connection? So, I would use it on the connection and then another one on a reader within the c

Answer 1

1) Should you always use a using statement on a connection? So, I would use it on the connection and then another one on a reader within the connection? So I would be using two using statements.

Yes, because they implement IDisposable. And don't forget a using statement on the command too :

using (DbConnection connection = GetConnection())
using (DbCommand command = connection.CreateCommand())
{
    command.CommandText = "SELECT FOO, BAR FROM BAZ";
    connection.Open();
    using (DbDataReader reader = command.ExecuteReader())
    {
        while (reader.Read())
        {
            ....
        }
    }
}

2) Lets say you use the using statement on the connection and also a reader being returned on the connection. So you have two using statements. Does it create two Try{}Finally{} blocks or just one?

Each using statement will create its own try/finally block