Invalid body structure-Problem in downloading "txt" file

See more:

C#

hello everyone,
I am able to download txt file but after that it give message "invalid body structure"

using given solution by this post
http://www.codeproject.com/Messages/2507681/notepad-attachement.aspx
i tried but not get solution still having problem..

one more thing i have noticed that
--if my email contains more then one attachments and if i get first attachment as txt file and second in any format then it stops parse another attachments

---id it reverse like first file may be any format and then second is txt file then its parse after first file as well and after parsing txt file it give message "invalid body structure" and logout ....

please help me if any body know about this problem .. :(

and sorry for my english :(

i hope i will get reply soon ..