Best practice for nested using statements?

Question

I have a code block as follows and I\'m using 3 nested using blocks.

I found that using try finally blocks I can avoid this but if there a

Answer 1

Maybe something conventional; best approach for choosing between two in my opinion would be;

• Using : If you are going to use an instance within a context and need to Dispose it after you are done with it
• try/finally : If you are expecting any issue and have something to do with the exception, catching it before you Dispose the instance you are using.

And as other comments / answers state; you don't need instance level variables;

using (FileStream fileStream = new FileStream("ABC.pdf", FileMode.Create))
using (Document document = new Document(PageSize.A4, marginLeft, marginRight, marginTop, marginBottom))
using (PdfWriter pdfWriter = PdfWriter.GetInstance(document, fileStream))
{
    // # Implementation here seems like a good approach
}