how to clear all item from list box

How to upload a given url file to given Folder.

Regarding Problem in sending Mail. There is no Error but mail is not delivered to destination My mail server is also working and their Credential is also Correct. Plz help

i have facing sending mail.i have write code: System.Net.NetworkCredential SmtpUser = new System.Net.NetworkCredential("donotreply@whclubs.net", "reply_wh"); SmtpClient smtp = new SmtpClient(); MailAddress from = new MailAddress(txtFrom.Text); MailAddress to = new MailAddress(txtTo.Text); MailMessage message = new MailMessage(from, to); message.Subject = txtSubject.Text; smtp.Host = "mail.whclubs.net"; smtp.DeliveryMethod = SmtpDeliveryMethod.Network; smtp.UseDefaultCredentials =false; smtp.Credentials = SmtpUser; smtp.Send(message); what is the problem in sending mail Thanks in advance

Can it is possible to fetch Client Mechine IP under Run Prosxy Server(Internet Distributive Envoirnment).I have written code string IPAddress = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"].ToString(); but it was return Proxy Server IP,but my moto to find out both proxy ip & Client IP.It is possible My Proxy server retrun Client Mechine IP. Plz help me.

how Find out Serial No of HDD who access my Web Application.I m using System.Management Namespace to Find the Client Mechine.This Application run on when it was running in Visual Studio.net (IDE) Envoirnment but when it was running on web server it is still nothing given to Response. what is Problem

I want to add a Namespace in Web page.how can i add Namesapce using Mechine.config in asp.net.

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plz give answer in ASP.NET using C#.i have developed a sms web application,want to send birthday alarm automatically to register user.I have store all the information in sqlserver like birthday date.

hy, how can i create a transaction so that when ever i update a row of a table no other user can change it or access it.. its like transaction on a account , only one user can operate on an account at a time. i tried the following sql statement LOCK [ TABLE ] name IN lock_mode but it gives an error "incorrect syntax near table" should i create a stored procedure and then use SET TRANSACTION ISOLATION LEVEL SERIALATION after creating a transaction. plz help