Reordering pages from PDF in Xamarin

To reorder pages in a PDF document by reversing the order of pages.

Given the copy and delete page operations described in other sections, it is easy to re-arrange and sort pages.

PDFDoc doc = new PDFDoc(filename);

int page_num = doc.GetPageCount();
for (int i=1; i<=page_num; ++i)
{
  PageIterator itr = doc.GetPageIterator(i);
  Page page = itr.Current();
  doc.PageRemove(itr);
  doc.PagePushFront(page);
}

Merge, copy, delete, and rearrange PDF pages
Full code sample which illustrates how to copy pages from one document to another, how to delete, and rearrange pages and how to use ImportPages().