OO design principles

http://mmiika.wordpress.com/oo-design-principles/

Forcefully download the pdf files

Response.ContentType = "application/pdf";
Response.AppendHeader("Content-Disposition", "attachment; filename=axz.pdf");
string path = "xyz.pdf";
byte[] buffer = System.IO.File.ReadAllBytes(path);
Response.OutputStream.Write(buffer, 0, buffer.Length);
Response.Flush();

Count with xpath

( count(/*/Node[text() = 'Yes']) +
count(/*/Nod2[text() = 'No']) ) > 0
http://www.xmltools.dk/