If you came across some C# code like this with nested using statements/resources:
using (var response = (HttpWebResponse)request.GetResponse())
{
using (
FWIW, here's another way to spell your original example which may satisfy any dismay over nesting:
using (var response = (HttpWebResponse)request.GetResponse())
using (var responseStream = response.GetResponseStream())
using (var reader = new BinaryReader(responseStream))
{
// do something with reader
}
Whether the reader disposes of the stream is really a function of the reader, not the 'using'. As I recall that is often what the behavior with readers is--they take ownership of the stream and dispose of it when the reader is itself closed. But the form I've provided above should be fine.