//TODO ~ Add products to new Customer update stored procedure to use scope_identity
        private void btnNewCustomer_Click(object sender, EventArgs e)
        {
            List <MaterialSingleLineTextField> allFields     = NewCustomerDetails();
            List <MaterialSingleLineTextField> numericFields = new List <MaterialSingleLineTextField>();

            numericFields.Add(txtNewPhone);

            if (!IsNullOrWhiteSpace(allFields) && IsNumeric(numericFields))
            {
                management.Insert(txtNewName.Text, txtNewSurname.Text, txtNewEmail.Text, txtNewAddress.Text, int.Parse(txtNewPhone.Text), txtNewBankAccount.Text, 0);
                MessageBox.Show("Insertion successful!");
                RefreshAll();
                ClearFields(allFields);
                techSupport.RefreshAll();
            }

            else
            {
                MessageBox.Show("Vaules in incorrect format");
            }
        }