asp.net pdf download problem

[UD IA]

hi i am new user of asp.net. i given a link name form.pdf and i given a link like this form when i click on this link of form there is problem shows format error. not a PDF or currepted. while working very well on my machine (localhost) when i upload my site on server this problem occurres. plz help me thanks I will do my best? Integrated Solutions, Bikaner (Raj.), India