protected void Button5_Click(object sender, EventArgs e)
{
ServiceReference1.ServiceClient sc1 = new ServiceReference1.ServiceClient();
BookPurchaseInfo info = new BookPurchaseInfo();
BookPurchaseResponse responce = new BookPurchaseResponse();
Boolean valid = true;
try
{
float budget = float.Parse(TextBox9.Text);
if (budget <= 0)
{
TextBox13.Text = "budget must be positive";
return;
}
info.budget = budget;
info.items = new Dictionary <int, int>();
//info.items.Add(int.Parse(TextBox10.Text), int.Parse(TextBox11.Text));
for (int j = 0; j < count; j++)
{
TextBox tb1 = (TextBox)Panel1.FindControl("book" + j);
TextBox tb2 = (TextBox)Panel1.FindControl("amount" + j);
try
{
int key = int.Parse(tb1.Text);
int value = int.Parse(tb2.Text);
info.items.Add(key, value);
}
catch
{
TextBox13.Text = "Book number or amount is invalid";
}
}
responce.response = sc1.PurchaseBooks(info.budget, info.items, out responce.result);
TextBox12.Text = responce.response;
}
catch
{
TextBox13.Text = "budget is invalid";
}
}
public BookPurchaseResponse PurchaseBooks(BookPurchaseInfo info)
{
BookPurchaseResponse responce = new BookPurchaseResponse();
List <Book> books = GetAllBooks();
float budget = info.budget;
Dictionary <int, int> items = info.items;
float totalPrice = 0.0f;
foreach (var item in items)
{
int key = item.Key;
int value = item.Value;
if (key > books.Count || key <= 0)
{
throw new Exception("Input is invalid");
}
if (value > books[key - 1].stock)
{
responce.result = false;
responce.response = "No enough stocks";
return(responce);
}
totalPrice = totalPrice + value * books[key - 1].price;
}
if (totalPrice > info.budget)
{
responce.response = "No enough money";
responce.result = false;
return(responce);
}
responce.response = Convert.ToString(info.budget - totalPrice);
responce.result = true;
return(responce);
}
