How to see what C# syntactic sugar expands into?

Question

.NET

Everywhere you can read that some using

using (FileStream fs = new FileStream(@"C:\tmp\text.txt", FileMode.Open))
{
}

unfolds into something like

FileStream fs = new FileStream(@"C:\tmp\text.txt", FileMode.Open);
try
{
}
finally
{
    if (fs != null)
        ((IDisposable)fs).Dispose();
}

Are there any ways to see for yourself what is unfolding into what? As far as I understand, ildasm already gives an assembler, but this is not what I need.

Answer 1

for example

Answer 2

ildasm doesn't give assembly code, it gives IL code. Pretty readable, try
In the book CLR via c# that how it works is told through this program