protected void signinButton_Click(object sender, EventArgs e) { if (!String.IsNullOrEmpty(emailTB.Text) && !String.IsNullOrEmpty(pwdTB.Text)) { String filepath = Server.MapPath("Solution Items/TextFile1.txt"); AccntService.AccountServicesClient accountService = new AccntService.AccountServicesClient(); bool status = accountService.authenticateUser(emailTB.Text, pwdTB.Text, filepath); if (status) { StatusLabel.Text = "Login Successful"; } else { StatusLabel.Text = "Login Unsucessful, please check password/email."; } } else { StatusLabel.Text = "Both fields need are mandatory"; } }