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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace Payment
{
public partial class frmPayment : Form
{
public frmPayment()
{
InitializeComponent();
}
private void frmPayment_Load(object sender, EventArgs e)
{
lstCreditCardType.Items.Add("Visa");
lstCreditCardType.Items.Add("Mastercard");
lstCreditCardType.Items.Add("American Express");
lstCreditCardType.SelectedIndex = 0;
string[] months = {"Select a month...",
"January", "February", "March",
"April", "May", "June",
"July", "August", "September",
"October", "November", "December"};
foreach (string month in months)
cboExpirationMonth.Items.Add(month);
cboExpirationMonth.SelectedIndex = 0;
int year = DateTime.Today.Year;
int endYear = year+8;
cboExpirationYear.Items.Add("Select a year...");
while (year < endYear) {
cboExpirationYear.Items.Add(year);
++year;
}
cboExpirationYear.SelectedIndex = 0;
}
private void btnOK_Click(object sender, EventArgs e)
{
if (IsValidData())
this.SaveData();
}
private void Billing_CheckedChanged(object sender, EventArgs e)
{
if (rdoCreditCard.Checked)
EnableControls();
else
DisableControls();
}
private void EnableControls()
{
lstCreditCardType.Enabled = true;
txtNum.Enabled = true;
cboExpirationMonth.Enabled = true;
cboExpirationYear.Enabled = true;
}
private void DisableControls()
{
lstCreditCardType.Enabled = false;
txtNum.Enabled = false;
cboExpirationMonth.Enabled = false;
cboExpirationYear.Enabled = false;
}
private bool IsValidData()
{
if (rdoCreditCard.Checked) {
if (lstCreditCardType.SelectedIndex == -1) {
MessageBox.Show("You must select a credit card type",
"Entry Error");
lstCreditCardType.Focus();
return false;
}
if (txtNum.Text == "") {
MessageBox.Show("You must enter a credit card number",
"Entry Error");
txtNum.Focus();
return false;
}
if (cboExpirationMonth.SelectedIndex == 0) {
MessageBox.Show("You must select a month", "Entry Error");
cboExpirationMonth.Focus();
return false;
}
if (cboExpirationYear.SelectedIndex == 0) {
MessageBox.Show("You must select a year", "Entry Error");
cboExpirationYear.Focus();
return false;
}
}
return true;
}
private void SaveData()
{
string msg = null;
if (rdoCreditCard.Checked)
msg = "Charge to credit card"
+ "\n\nCard type: " + lstCreditCardType.Text
+ "\nCard number: " + txtNum.Text
+ "\nExpiration date: " + cboExpirationMonth.Text
+ "/" + cboExpirationYear.Text + "\n";
else
msg = "Send bill to customer" + "\n\n";
msg += "Default billing: " + (bool)chkDefault.Checked;
this.Tag = msg;
this.DialogResult = DialogResult.OK;
}
}
}
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