asp.net web application update web.config SMTP settings in global.ascs application_start():

asp.net web application update web.config SMTP settings in global.ascs application_start():

System.Configuration.Configuration config = System.Web.Configuration.WebConfigurationManager.OpenWebConfiguration("~/");

            System.Net.Configuration.MailSettingsSectionGroup mailSettingsGroup = config.GetSectionGroup("system.net/mailSettings") as System.Net.Configuration.MailSettingsSectionGroup;

            mailSettingsGroup.Smtp.Network.Host = Properties.Settings.Default.SMTPServer;

            mailSettingsGroup.Smtp.Network.Port = Properties.Settings.Default.SMTPPort;

            mailSettingsGroup.Smtp.Network.DefaultCredentials = Properties.Settings.Default.SMTPAuthenticationEnabled;

            if (mailSettingsGroup.Smtp.Network.DefaultCredentials)

            {

                mailSettingsGroup.Smtp.Network.UserName = Properties.Settings.Default.SMTPUsername;

                mailSettingsGroup.Smtp.Network.Password = Properties.Settings.Default.SMTPPassword;

            }