private void loginbtn_Click(object sender, EventArgs e)
        {
            MenuForm menu = new MenuForm();

            menu.Show();
            this.Hide();


            //   SignUpForm sign = new SignUpForm();
            //// sending mail

            //SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587);
            //smtp.EnableSsl = true;
            //smtp.Credentials = new System.Net.NetworkCredential("*****@*****.**", "Royals12345");
            //MailMessage msg = new MailMessage();
            //msg.Subject = "Hello " + UserNameTxt.Text + "Login Found";
            //msg.Body = "Hi, Thankyou for becoming our customer,now We will Provide You The Latest Update. Thanks";
            //string toaddress = textBox1.Text;
            //msg.To.Add(toaddress);
            //string fromaddress = "RoyalCafe <*****@*****.**>";
            //msg.From = new MailAddress(fromaddress);
            //try
            //{
            //    smtp.Send(msg);

            //}
            //catch
            //{
            //    throw;
            //    MessageBox.Show("exception");// + exp);
            //}

            // SqlConnection con = new SqlConnection("Data Source = DESKTOP - S2LG294\\SQLEXPRESS; Initial Catalog = VplProject; Integrated Security = True");

            //SqlCommand cmd = new SqlCommand("select * from LoginDB where UserName='******' and Password='******'", con);
            // cmd.Parameters.AddWithValue("UserName", UserNameTxt.Text);
            // cmd.Parameters.AddWithValue("Password", passwordtxt.Text);
            // SqlDataAdapter sda = new SqlDataAdapter(cmd);
            // DataTable dt = new DataTable();
            // sda.Fill(dt);
            // con.Open();
            // int i = cmd.ExecuteNonQuery();
            // con.Close();
            // if (dt.Rows.Count > 0)
            // {
            //     //  Session["id"] = TextBox1.Text;
            //     //   Response.Redirect("Redirectform.aspx");
            //     // Session.RemoveAll();
            //     MenuForm menu = new MenuForm();
            //     menu.Show();
            //     this.Hide();
            // }
            // else
            // {
            //     MenuForm menu = new MenuForm();
            //     this.Show();
            //     menu.Hide();
            //     //Label1.Text = "You're username and word is incorrect";
            //     //Label1.ForeColor = System.Drawing.Color.Red;

            // }
        }