public BookPurchaseInfo BookPurchaseInfo(string totalBudget, Dictionary <string, string> purchaseBook)
{
BookPurchaseInfo thisPurchaseInfo = new BookPurchaseInfo();
if (String.IsNullOrWhiteSpace(totalBudget))
{
throw new NullReferenceException("Input field(s) is empty.");
}
else
{
try
{
thisPurchaseInfo.budget = float.Parse(totalBudget);
thisPurchaseInfo.items = purchaseBook.ToDictionary(
x => int.Parse(x.Key),
x => int.Parse(x.Value)
);
}
catch (Exception Ex)
{
throw new Exception(Ex.Message);
}
}
return(thisPurchaseInfo);
}
public BookPurchaseResponse PurchaseBooks(BookPurchaseInfo purchaseInfo)
{
float totalCost = 0;
float thisBudget = purchaseInfo.budget;
Dictionary <int, int> items = purchaseInfo.items;
foreach (KeyValuePair <int, int> item in items)
{
int thisID = item.Key;
int thisQty = item.Value;
float getCost = getBookCost(thisID);
int getQty = getBookQty(thisID);
if (getQty < thisQty)
{
thisResponse.result = false;
thisResponse.response = "Not enough stock(s) available. You wanted:" + thisQty + "; stock(s) available: " + getQty;
return(thisResponse);
}
totalCost += (getCost * thisQty);
}
if (totalCost <= thisBudget)
{
thisResponse.result = true;
try
{
float balance = thisBudget - totalCost;
thisResponse.response = String.Format("Your change is: ${0:0.00}", balance);
}
catch (Exception Ex)
{
throw new FaultException <Exception>(new Exception(Ex.Message));
}
}
else
{
thisResponse.result = false;
thisResponse.response = "Not enough money. You are $" + String.Format("{0:0.00}", totalCost - thisBudget) + " short.";
}
return(thisResponse);
}
protected void btnPurchase_Click(object sender, EventArgs e)
{
string totalBudget = txtTotalBudget.Text;
Dictionary <string, string> purchasedBooks = new Dictionary <string, string>();
string bookNo = txtBookNumber_0.Text;
string bookQty = txtQty_0.Text;
purchasedBooks.Add(bookNo, bookQty);
int noOfFields = fieldQty;
bool isBookNo = false;
bool isBookQty = false;
foreach (Control controls in placeHolderAddField.Controls)
{
if (controls is TextBox && controls.ID.Contains("txtBookNumber_"))
{
bookNo = ((TextBox)controls).Text;
isBookNo = true;
}
if (controls is TextBox && controls.ID.Contains("txtQty_"))
{
bookQty = ((TextBox)controls).Text;
isBookQty = true;
}
if (isBookNo && isBookQty)
{
try
{
purchasedBooks.Add(bookNo, bookQty);
isBookNo = false;
isBookQty = false;
}
catch (Exception Ex)
{
System.Windows.Forms.MessageBox.Show(
Ex.Message,
"Error Occurred",
System.Windows.Forms.MessageBoxButtons.OK,
System.Windows.Forms.MessageBoxIcon.Error
);
}
}
}
try
{
BookPurchaseInfo thisBookPurchaseInfo = thisBookPurchaseService.BookPurchaseInfo(totalBudget, purchasedBooks);
BookPurchaseResponse thisPurchaseResponse = thisBookPurchaseService.PurchaseBooks(thisBookPurchaseInfo);
txtPurchase.Text = thisPurchaseResponse.response;
}
catch (Exception Ex)
{
System.Windows.Forms.MessageBox.Show(
Ex.Message,
"Error Occurred",
System.Windows.Forms.MessageBoxButtons.OK,
System.Windows.Forms.MessageBoxIcon.Exclamation
);
}
}
