public Auction CreateAuction(DateTime date, string description, List<Art> arts)
{
Auction auction = new Auction()
{
Date = date,
Description = description,
Arts = arts
};
using (AuctionDBContext db = new AuctionDBContext())
{
//db.Arts.Load();
foreach (var art in arts)
{
db.Arts.Attach(art);
db.Entry(art).Entity.Auction = auction;
db.Entry(art).State = EntityState.Modified;
//
//db.Entry(art).State = EntityState.Modified;;
}
db.Auktions.Add(auction);
db.DebugDetectChanges();
db.SaveChanges();
}
return auction;
}
private void btnCancel_Click(object sender, EventArgs e)
{
getArtData();
getUpcomingAuctions();
getEndedAuction();
grbCreate.Text = "Opret";
dtpDate.Value = DateTime.Now;
txtDecs.Text = "";
lbxSelectedArt.DataSource = null;
auction = null;
}
public Budgivning(Auction au)
{
InitializeComponent();
lblHeader.Text = "Auktion den " + au.Date;
currentAuction = au;
ctrArt = new CtrArt();
ctrAuc = new CtrAuction();
dgvArts.DataSource = ctrArt.RetrieveAll(au.Id);
}
public void DeleteAuction(Auction auction)
{
if (auction == null)
throw new NullReferenceException("auction");
using (AuctionDBContext db = new AuctionDBContext())
{
db.Auktions.Attach(auction);
db.Entry(auction).State = EntityState.Deleted;
db.Auktions.Remove(auction);
db.SaveChanges();
}
}
private void lbxUpcoming_MouseClick(object sender, MouseEventArgs e)
{
auction = lbxUpcoming.SelectedItem as Auction;
dtpDate.Value = auction.Date;
txtDecs.Text = auction.Description;
lbxSelectedArt.DataSource = auction.Arts;
grbCreate.Text = "Rediger";
}
public Auction UpdateAuction(Auction auction)
{
if (auction == null)
throw new NullReferenceException("auction");
using (AuctionDBContext db = new AuctionDBContext())
{
try
{
var artsInDb = db.Arts.Where(x => x.AuctionId == auction.Id).ToList();
foreach (var art in artsInDb)
{
art.AuctionId = null;
db.Entry(art).State = EntityState.Modified;
}
var artsInDbIds = artsInDb.Select(x => x.Id);
foreach (var art in auction.Arts)
{
art.AuctionId = auction.Id;
if (!artsInDbIds.Contains(art.Id))
{
db.Entry(art).State = EntityState.Modified;
}
else
{
var tempObj = db.ChangeTracker.Entries<Art>().Single(x => x.Entity.Id == art.Id);
tempObj.Entity.AuctionId = auction.Id;
}
}
var artsList = auction.Arts;
auction.Arts = null;
db.Entry(auction).State = EntityState.Modified;
db.DebugDetectChanges();
db.SaveChanges();
auction.Arts = artsList;
}
catch (UpdateException)
{
}
}
return auction;
}
public Art UpdateToAuction(int id, Auction au)
{
using (AuctionDBContext db = new AuctionDBContext())
{
Art aTemp = db.Arts.SingleOrDefault(x => x.Id == id);
aTemp.Auction = au;
try
{
db.Arts.Attach(aTemp);
var entry = db.Entry(aTemp);
entry.State = EntityState.Modified;
db.SaveChanges();
}
catch (Exception e)
{
throw e;
}
return RetrieveById(id);
}
}
