protected void RegisterButton_Click(object sender, EventArgs e) { if (AccountName.Text == "" || Password.Text == "" || Email.Text == "") { Response.Write("<script>alert('A field was left blank. Please try again.');</script>"); } else { LoginCredentials registeringAccount = new LoginCredentials(AccountName.Text, Password.Text, Email.Text); if (registeringAccount.Register()) { //good for you Response.Redirect(@"~/Default.aspx"); } else { Response.Write("<script>alert('Account name or e-mail already in use.');</script>"); } } }