private List <Item> ReadFromFile(string filename)
{
XmlSerializer xmlserializer = new XmlSerializer(typeof(List <Item>));
StreamReader readFromFile = new StreamReader(filename);
List <Item> items = (List <Item>)xmlserializer.Deserialize(readFromFile);
if (itemsList.Count > 0)
{
itemsList.Clear();
}
itemObject.RunningTotal = 0;
try
{
if (items.Count() > 0)
{
itemsList = items;
foreach (var item in itemsList)
{
if (item.GetType().Name == "Tire")
{
tire = (Tire)item;
itemObject.RunningTotal += tire.Cost;
}
else if (item.GetType().Name == "Battery")
{
battery = (Battery)item;
if (battery.Ship == true)
{
itemObject.RunningTotal += battery.Cost + battery.ShipItem();
}
else
{
itemObject.RunningTotal += battery.Cost;
}
}
else if (item.GetType().Name == "WindshieldWipers")
{
windShieldWipers = (WindshieldWipers)item;
if (windShieldWipers.Ship == true)
{
itemObject.RunningTotal += windShieldWipers.Cost + windShieldWipers.ShipItem();
}
else
{
itemObject.RunningTotal += windShieldWipers.Cost;
}
}
}
MessageBox.Show("Purchase history loaded successfully");
}
else
{
MessageBox.Show("File Empty: There is no purchase history in the file to be loaded.");
}
}
catch (Exception)
{
MessageBox.Show("Something went wrong while loading the purchase history data. Please try again!");
}
readFromFile.Close();
return(items);
}
private void BtnSubmit_Click(object sender, RoutedEventArgs e)
{
try
{
if (ItemType.SelectionBoxItem.ToString() == "Batteries" && (RadioYes.IsChecked == true || RadioNo.IsChecked == true))
{
if (TxtItemName.Text.Trim() != "" && (TxtBatteryVoltage.Text.Trim() != "" && TxtBatteryVoltage.Text.Trim() != "0"))
{
if (RadioYes.IsChecked == true)
{
battery = new Battery(TxtItemName.Text, int.Parse(TxtBatteryVoltage.Text), true);
itemsList.Add(battery);
itemObject.RunningTotal = itemObject.RunningTotal + battery.Cost + battery.ShipItem();
}
else
{
battery = new Battery(TxtItemName.Text, int.Parse(TxtBatteryVoltage.Text), false);
itemsList.Add(battery);
itemObject.RunningTotal = itemObject.RunningTotal + battery.Cost;
}
MessageBox.Show($"{battery.GetType().Name} purchased");
TxtItemName.Text = "";
TxtBatteryVoltage.Text = "";
}
else
{
MessageBox.Show("Item Name and Battery Voltage are mandatory");
}
}
else if (ItemType.SelectionBoxItem.ToString() == "Windshield Wipers" && (RadioYes.IsChecked == true || RadioNo.IsChecked == true))
{
if (TxtItemName.Text.Trim() != "" && (TxtWindShieldLength.Text.Trim() != "" && TxtWindShieldLength.Text.Trim() != "0"))
{
if (RadioYes.IsChecked == true)
{
windShieldWipers = new WindshieldWipers(TxtItemName.Text, int.Parse(TxtWindShieldLength.Text), true);
itemsList.Add(windShieldWipers);
itemObject.RunningTotal = itemObject.RunningTotal + windShieldWipers.Cost + windShieldWipers.ShipItem();
}
else
{
windShieldWipers = new WindshieldWipers(TxtItemName.Text, int.Parse(TxtWindShieldLength.Text), false);
itemsList.Add(windShieldWipers);
itemObject.RunningTotal = itemObject.RunningTotal + windShieldWipers.Cost;
}
MessageBox.Show($"{windShieldWipers.GetType().Name} purchased");
TxtItemName.Text = "";
TxtWindShieldLength.Text = "";
}
else
{
MessageBox.Show("Item Name and Windshield wiper length are mandatory");
}
}
else if (ItemType.SelectionBoxItem.ToString() == "Tires")
{
if (TxtItemName.Text.Trim() != "" && TxtTireModelName.Text.Trim() != "" && (TxtTireDiameter.Text.Trim() != "" && TxtTireDiameter.Text.Trim() != "0"))
{
tire = new Tire(TxtItemName.Text, int.Parse(TxtTireDiameter.Text), TxtTireModelName.Text);
itemsList.Add(tire);
itemObject.RunningTotal = itemObject.RunningTotal + tire.Cost;
MessageBox.Show($"Tire purchased");
TxtItemName.Text = "";
TxtTireModelName.Text = "";
TxtTireDiameter.Text = "";
}
else
{
MessageBox.Show("Please input all the required fields with appropriate data");
}
}
else
{
MessageBox.Show("Please enter all the mandatory fields.");
}
}
catch (Exception)
{
MessageBox.Show("Oops! Some error occured while submitting buying the item. Please enter all the fields correctly and retry.");
}
}