Now I am creating my own web browser to log on web site and get some data from that server, I use webclient from C#, The server accept my username and password from function uploadingvalues and redirecting me to createsession.asp with generated random number about 64 character and I send this generated number and variable again to server,the server redirect me to Home page(this process was the same as manual log in from web page) but after send me to Home Page the data in home page was not for member and asking me for log in again? I think this is a problem from my own browser was not use session data to communicate with server,is this right? And could you help me for this problem?