Question

I have been looking at using in C# and I want to know if the following code is equivalent;

using (SqlConnection connection1 = new SqlConnection(), connection2 = new SqlConnection())
{
}

To this code;

using (SqlConnection connection1 = new SqlConnection())
using (SqlConnection connection2 = new SqlConnection())
{
}

Answer 1

The C# Spec says,

When a resource-acquisition takes the
form of a local-variable-declaration,
it is possible to acquire multiple
resources of a given type. A using
statement of the form

    using (ResourceType r1 = e1, r2 = e2, ..., rN = eN) statement

is precisely equivalent to a sequence
of nested using statements:

    using (ResourceType r1 = e1)
       using (ResourceType r2 = e2)
          ...
             using (ResourceType rN = eN)
                statement