private void label7_Click(object sender, EventArgs e)
        {
            RegisterFormView registerForm = new RegisterFormView();

            this.Hide();
            registerForm.ShowDialog();
            this.Close();
        }
        private void btnRegister_Click(object sender, EventArgs e)
        {
            this.Hide();
            RegisterFormView r = new RegisterFormView();

            r.ShowDialog();
            this.Close();
        }