public static decimal Buy()
{
AccountUser au = new AccountUser();
string mainFile = @"products.xml";
decimal result = 0;
decimal money = au.GetBalance();
if (money == 0 || money < 0)
{
Console.WriteLine("Pls take credit");
}
else if (!File.Exists(mainFile))
{
Console.WriteLine("Seller did not add products!");
Console.ReadKey();
}
else
{
Info info = new Info();
XDocument doc = XDocument.Load(mainFile);
Console.Write("Id: ");
info.Id = Convert.ToInt32(Console.ReadLine());
Console.Write("Category: ");
info.Category = Console.ReadLine();
var node = from product in doc.Descendants("Product")
where (string)product.Attribute("id") == "" + info.Id && (string)product.Attribute("category") == "" + info.Category
select new
{
id = product.Attribute("id").Value,
category = product.Attribute("category").Value,
title = product.Element("title").Value,
price = product.Element("price").Value,
weight = product.Element("description").Element("weight").Value
};
Console.WriteLine("You buy product or products...\n");
foreach (var nod in node)
{
Console.WriteLine("Id: " + nod.id);
Console.WriteLine("Category: " + nod.category);
Console.WriteLine("Title: " + nod.title);
Console.WriteLine("Price: " + nod.price + " RUB");
Console.WriteLine("Weight: " + nod.weight);
result = Convert.ToDecimal(nod.price);
}
doc.Element("Products")
.Descendants("Product")
.Where(x => (string)x.Attribute("id") == "" + info.Id && (string)x.Attribute("category") == "" + info.Category)
.Remove();
doc.Save(mainFile);
var docA = new XmlDocument();
docA.Load(mainFile);
var nodeA = docA.SelectSingleNode("Products/Product");
if (nodeA == null)
{
File.Delete(mainFile);
}
else
{
Console.WriteLine("O_o");
}
/*IEnumerable<string element = xDoc.Element("Products").Descendants("Product")
* .Where(x => (string)x.Attribute("id") == "" + info.Id && (string)x.Attribute("category") == "" + info.Category)
* .Select(r => r.Element("Price")).Value;*/
Console.ReadKey();
}
return(result);
}
public static void RemoveProducts()
{
try
{
string mainFile = @"products.xml";
if (!File.Exists(mainFile))
{
Console.Write("File not found\nPress and choose [Y/N]\nY - to add\nN - to break\n");
var key = System.Console.ReadKey(true);
switch (key.Key)
{
case System.ConsoleKey.Y:
Serializer.Serialization();
break;
case System.ConsoleKey.N:
Console.WriteLine("\nBreak down...");
Console.ReadKey();
break;
default:
break;
}
}
else if (File.Exists(mainFile))
{
Info info = new Info();
XDocument xDoc = XDocument.Load(mainFile);
Console.Write("Id: ");
info.Id = Convert.ToInt32(Console.ReadLine());
Console.Write("Category: ");
info.Category = Console.ReadLine();
xDoc.Element("Products")
.Descendants("Product")
.Where(x => (string)x.Attribute("id") == "" + info.Id && (string)x.Attribute("category") == "" + info.Category)
.Remove();
xDoc.Save(mainFile);
while (true)
{
Console.Write("Press and choose [Y/N]\nY - to add\nN - to break\n");
var key = System.Console.ReadKey(true);
switch (key.Key)
{
case System.ConsoleKey.Y:
Console.Write("Id: ");
info.Id = Convert.ToInt32(Console.ReadLine());
Console.Write("Category: ");
info.Category = Console.ReadLine();
xDoc.Element("Products")
.Descendants("Product")
.Where(x => (string)x.Attribute("id") == "" + info.Id && (string)x.Attribute("category") == "" + info.Category)
.Remove();
xDoc.Save(mainFile);
continue;
case System.ConsoleKey.N:
Console.WriteLine("\nBreak down...");
Console.ReadKey();
break;
default:
break;
}
break;
}
var doc = new XmlDocument();
doc.Load(mainFile);
var node = doc.SelectSingleNode("Products/Product");
if (node == null)
{
File.Delete(mainFile);
}
else
{
Console.WriteLine("O_o");
}
}
else
{
Console.WriteLine("Error");
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.ReadKey();
}
}
public static void Serialization()
{
try
{
string mainFile = @"products.xml";
if (!File.Exists(mainFile))
{
Info info = new Info();
List <Product> LProducts = new List <Product>();
Console.WriteLine();
Console.Write("Id: ");
info.Id = Convert.ToInt32(Console.ReadLine());
Console.Write("Category: ");
info.Category = Console.ReadLine();
Console.Write("Title: ");
info.Title = Console.ReadLine();
Console.Write("Price: ");
info.Price = Convert.ToDecimal(Console.ReadLine());
Console.Write("Weight: ");
info.Weight = Convert.ToDecimal(Console.ReadLine());
Console.WriteLine();
LProducts.Add(new Product {
Id = info.Id, Category = info.Category, Title = info.Title, price = new Price {
Value = info.Price, Unit = "RUB"
}, description = new Description {
Weight = info.Weight
}
});
XmlSerializer xmlSerializer = new XmlSerializer(typeof(List <Product>), new XmlRootAttribute("Products"));
StreamWriter writer = new StreamWriter(mainFile);
xmlSerializer.Serialize(writer, LProducts);
writer.Close();
Console.WriteLine("The file does not exist, so a new file was created...");
}
else if (File.Exists(mainFile))
{
Console.WriteLine("File exist...");
Add();
}
else
{
Console.WriteLine("Error");
}
Console.WriteLine("Serialization completed...");
while (true)
{
Console.Write("Press and choose [Y/N]\nY - to add\nN - to break\n");
var key = System.Console.ReadKey(true);
switch (key.Key)
{
case System.ConsoleKey.Y:
Add();
continue;
case System.ConsoleKey.N:
Console.WriteLine("\nBreak down...");
Console.ReadKey();
break;
default:
break;
}
break;
}
}
catch (Exception e)
{
Console.WriteLine(e.Message);
Console.ReadKey();
}
}
