private void lbl_form_user_registration_name_Click(object sender, EventArgs e)
        {
            User_registration newMember = new User_registration();
            for (int i = 0; i < 7; i++) newMember.indicator[i] = true;

            newMember.Nm_usuario = txt_full_user_name.Text;
            newMember.Email = txt_user_mail_registration.Text;
            newMember.Nm_login = txt_access_name_registration.Text;
            newMember.Cd_senha = txt_password_registration.Text;
            newMember.Cd_senha_confirm = txt_confirm_password_registration.Text;

            if (combo_city.SelectedIndex > -1)
            {
                newMember.Nm_cidade = combo_city.SelectedItem.ToString();
            }
            else
            {
                newMember.Nm_cidade = "";
            }

            if (combo_type.SelectedIndex > -1)
            {
                newMember.Nm_tipo = combo_type.SelectedItem.ToString();
            }
            else
            {
                newMember.Nm_tipo = "";
            }

            for (int i = 0; i < newMember.indicator.Length; i++)
            {
                if (newMember.indicator[i] == false)
                {
                    lbl_to_txt_invalid_fields.Visible = true;
                    MessageBox.Show(i.ToString() + " - " + newMember.indicator[i].ToString());
                    return;
                }
            }
            Generics.try_connection();

            string sQuery = "SELECT Usuario.nm_login,Usuario.email,Usuario.tp_usuario FROM Usuario WHERE (Usuario.nm_login = '******' OR Usuario.email = '" + txt_user_mail_registration.Text + "') AND Usuario.tp_usuario = '" + combo_type.SelectedItem.ToString() + "'";

            if (Generics.select_especific_value(sQuery))
            {
                lbl_to_txt_invalid_login_mail.Visible = true;
            }
            else
            {
                sQuery = "INSERT Usuario (nm_login,email,cd_senha,nm_usuario,nm_cidade,tp_usuario) VALUES ('" + txt_access_name_registration.Text + "','" + txt_user_mail_registration.Text + "','" + txt_password_registration.Text + "','" + txt_full_user_name.Text + "','" + combo_city.SelectedItem.ToString() + "','" + combo_type.SelectedItem.ToString() + "')";

                Generics.select_NonQuery(sQuery);
                Generics.open_Login_Form(this);
                this.Close();
            }
        }
 private void frm_registration_Load(object sender, EventArgs e)
 {
     User_registration currentUser = new User_registration();
 }