how to export .aspx web form into pdf or word

Sheriff you may want to check out this C# library for word documents as well. Here is how I use it to create a PDF file with C#:

string html = "<div>...</div>";
DocumentModel document = new DocumentModel();
document.Content.LoadText(html, LoadOptions.HtmlDefault);
document.Save("out.pdf", SaveOptions.PdfDefault);

Also there is another way how you can convert your HTML into a PDF in C#.
I hope this helps.