EditProfile.btnSubmitChanges_Click C# (CSharp) Method

    protected void btnSubmitChanges_Click(object sender, EventArgs e)
    {
        // used for zip TryParse
        int result = 0;

        // check values of the textboxes, displaying the appropriate values, then
        // commit changes to the DB
        if (txtFirstName.Text == "" || txtFirstName.Text == "First Name")
        {
            ErrorText.Text = "First name required";
        }
        else if (txtLastName.Text == "" || txtLastName.Text == "Last Name")
        {
            ErrorText.Text = "Last name required";
        }
        else if (txtAddress.Text == "" || txtAddress.Text == "Address 1")
        {
            ErrorText.Text = "Address 1 required";
        }
        else if (txtCity.Text == "" || txtCity.Text == "City")
        {
            ErrorText.Text = "City name required";
        }
        else if (!int.TryParse(txtZip.Text, out result))
        {
            ErrorText.Text = "Invalid Zip";
        }
        else if (txtEmail.Text == "" || txtEmail.Text == "E-Mail")
        {
            ErrorText.Text = "E-Mail required";
        }
        else
        {
            // create customer data access object
            CustomerDA customerDA = new CustomerDA();

            // get references to the textboxes on the page
            MembershipUser currentUser = Membership.GetUser();

            try
            {
                // create a customer business object
                Customer customerObj = new Customer(customerID, true, currentUser.UserName, txtFirstName.Text,
                    txtLastName.Text, txtAddress.Text, txtAddress2.Text, txtCity.Text, cboState.Text, txtZip.Text, cboCountry.Text);

                // commit customer business object to the DB using the CustomerDA
                customerDA.Save(customerObj);

                // Update user e-mail
                currentUser.Email = txtEmail.Text;
                Membership.UpdateUser(currentUser);
            }
            catch (Exception ex)
            {
                // there was an error in updating the users account
                Response.Redirect("~/404.aspx");
            }

            // redirect the user back to their profile
            Response.Redirect("ViewProfile.aspx");
        }
    }