i want transfer a file over network in shared folder.

actually i am gone make a application in c# to transfer a file through network via WiFi.
so first i want start with shared folder...

i search a lot after i got some thing like this
http://stackoverflow.com/questions/659013/accessing-a-shared-file-unc-from-a-remote-non-trusted-domain-with-credentials?lq=1


but this tips is not working can u please help me.
give me any tutorial or tip to create and app like this over WIFI..


i am done the file transfer using USB and also in Different Drives but i want to transfer file over WIFI.


Thank you,