public void DeleteCollection(object param)
{
try
{
using (var db = new AliContext())
{
// Select group and items for deletion
var gs = db.Groups.Where(g => g.Id == (Guid)param).Include(i => i.Items).ToList();
// Delete group
foreach (var g in gs)
{
db.Groups.Remove(g);
}
db.SaveChanges();
// Delete group from datagrid
// Get group by id
var group = AliGroups.First(g => g.Id == (Guid)param);
// Remove current group
AliGroups.Remove(group);
}
}
catch (Exception ex)
{
MessageBox.Show(ex.Message,
"Error!",
MessageBoxButton.OK,
MessageBoxImage.Error);
}
}
private void DoSaveDb(object sender, DoWorkEventArgs e)
{
// Show progress bar
ProgressBar.Value = 0;
ProgressBar.Content = "";
ProgressBar.Visibility = Visibility.Visible;
// Send current progress to status view
OnProgress?.Invoke(ProgressBar);
// Disable buttons
Buttons.IsEnabled = false;
// Show progressbar
ProgressBar.Visibility = Visibility.Visible;
try
{
using (AliContext db = new AliContext())
{
var group = new AliGroupModel();
group.Name = CollectionTitle;
group.Created = DateTime.Now;
group.Items = new ObservableCollection <AliItemModel>();
// Add all items
int counter = 0;
int itemsCount = AliItems.Count;
foreach (var item in AliItems)
{
var itemModel = new AliItemModel
{
Title = item.Title,
Price = item.Price,
PriceCurrency = item.PriceCurrency,
Unit = item.Unit,
Seller = item.Seller,
Link = item.Link,
Description = item.Description,
Image = item.Image
};
group.Items.Add(itemModel);
// Set progress bar value
counter++;
int percent = (int)(Convert.ToDouble(counter) / Convert.ToDouble(itemsCount) * 100);
_bw1.ReportProgress(percent, String.Format("Saving item(s) {0} of {1}", counter, itemsCount));
}
db.Groups.Add(group);
db.SaveChanges();
}
// Fire database changed event to refresh main window
OnDbChanged?.Invoke();
// Show alert
MessageBox.Show("Items successfully saved!",
"Info",
MessageBoxButton.OK,
MessageBoxImage.Information);
}
catch (EntityException ex)
{
// Show message box
MessageBox.Show("Unable to connect to database. \n \n" +
"Check the database instance MS SQL Server LocalDB on your computer.\n \n" +
ex.Message,
"Error!",
MessageBoxButton.OK,
MessageBoxImage.Error);
}
catch (Exception ex)
{
MessageBox.Show(ex.Message,
"Error!",
MessageBoxButton.OK,
MessageBoxImage.Error);
}
}