1 files changed, 120 insertions, 0 deletions
diff --git a/payment/Payment/frmPayment.cs b/payment/Payment/frmPayment.cs
new file mode 100644
index 0000000..21a1b70
--- /dev/null
+++ b/payment/Payment/frmPayment.cs
@@ -0,0 +1,120 @@
+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;
+		}
+	}
+}