public Bid(int clientMadeBid, AuctionItem onItem, float forAmount)
{
//creates a new bidding object that a client made on an item (onItem) with an ammount (forAmount)
m_ClientID = clientMadeBid;
m_Item = onItem;
m_Amount = forAmount;
}
public Bid(AuctionItem onItem, float forAmount)
{
//creates a bid object without client id stores item bid reflects and ammount (typically starting amount)
m_ClientID = -1;
m_Item = onItem;
m_Amount = forAmount;
}
public AuctionItemList()
{
//creates and initializes auction items
//read xml file and get auction item information
XmlDocument doc = new XmlDocument();
doc.Load(URLString);
XmlElement root = doc.DocumentElement;
XmlNodeList setOnodes = root.SelectNodes("item");
int id = 0;
string description = "";
string imagePath = "";
float startBid = 0;
DateTime closeTime;
Random r = new Random();
this.listOItems = new LinkedList<AuctionItem>();
foreach (XmlNode node in setOnodes)
{
try
{
id = Int32.Parse(node["id"].InnerText);
description = node["description"].InnerText;
imagePath = node["imagePath"].InnerText;
startBid = float.Parse(node["startBid"].InnerText);
//generates random closing time
double minuteAddition = (double)(r.NextDouble() + r.Next(2, 6));
minuteAddition = .5;
closeTime = DateTime.Now.AddMinutes(minuteAddition);
AuctionItem newItem = new AuctionItem(id, description, closeTime, startBid, imagePath);
this.listOItems.AddLast(newItem);
}
catch (FormatException fe)
{
//if either id or startBid to not parse tell server
System.Windows.Forms.MessageBox.Show("FormatException in AuctionItemList constructor by: " + fe.TargetSite + "\rwith: " + fe.Message);
}
catch (ArgumentNullException ane)
{
System.Windows.Forms.MessageBox.Show("ArgumentNullException in AuctionItemList constructor by: " + ane.TargetSite + "\rwith: " + ane.Message);
}
catch (Exception e)
{
System.Windows.Forms.MessageBox.Show("Exception in AuctionItemList constructor by: " + e.TargetSite + "\rwith: " + e.Message);
}
}
}
public bool addAuctionItemToList(int id, string description, float startingBid, string imagePath)
{
try
{
//attempts to add auction item to list
//NOTE DOES NOT PERSIST ITEM
//first checks if item id is already used
LinkedListNode<AuctionItem> node = listOItems.First;
int i = listOItems.Count;
while (i > 0)
{
if (node.Value.getItemID() == id)
{
//if item id found return false
return false;
}
else
{
node = node.Next;
i--;
}
}
Random r = new Random();
//generate random closing time
double minuteAddition = (double)(r.NextDouble() + r.Next(2, 6));
DateTime closeTime = DateTime.Now.AddMinutes(minuteAddition);
//create item add it to list and return true
AuctionItem newItem = new AuctionItem(id, description, closeTime, startingBid, imagePath);
this.listOItems.AddFirst(newItem);
return true;
}
catch (Exception e)
{
//if any exception occcurs return false
return false;
}
}
