what does a using statement without variable do when disposing?

Question

I\'ve always used using with variable and assignment. Now i have like this a class DbProviderConnection:

public class DbProviderConnection : IDisposable
{
           


        

Answer 1

Yeah, the Dispose will be called. the using statement only works with disposable objects. Like this:

using (DbProviderConnection cnctn = _planDb.CreateOpenConnection())
{
    using (cnctn.BeginTransaction())
    {
        // ...
        cnctn.Transaction.Commit();
    } // Here BeginTransaction.Dispose() is called.
} // Here DbProviderConnection.Dispose() is called.