How does the “Using” statement translate from C# to VB?

Question

For example:

BitmapImage bitmap = new BitmapImage();

byte[] buffer = GetHugeByteArray(); // from some external source
using (MemoryStream stream = new Memor         


        

Answer 1

Its important to point out that using is actually compiled into various lines of code, similar to lock, etc.

From the C# language specification.... A using statement of the form

using (ResourceType resource = expression) statement

corresponds to one of two possible expansions. When ResourceType is a value type, the expansion is

{
    ResourceType resource = expression;
    try {
        statement;
    }
    finally {
        ((IDisposable)resource).Dispose();
    }
}

Otherwise, when ResourceType is a reference type, the expansion is

{
    ResourceType resource = expression;
    try {
        statement;
    }
    finally {
        if (resource != null) ((IDisposable)resource).Dispose();
    }
}

(end language specification snippet)

Basically, at compile time its converted into that code. There is no method called using, etc. I tried to find similar stuff in the vb.net language specification but I couldn't find anything, presumably it does the exact same thing.