private void Delete()
{
var supplier = SuppliersView.CurrentItem as Supplier;
ConfirmationRequest.Raise(
new Confirmation
{
Content = "删除供应商" + supplier.Name + "?",
Title = "确认",
},
r =>
{
if (r.Confirmed)
{
using (var context = new MasterDataContext())
{
var existingSupplier = context.Suppliers.Where(s => s.Id == supplier.Id)
.Include(s => s.Contacts).FirstOrDefault();
if (existingSupplier == null)
{
NotificationRequest.Raise(
new Notification
{
Content = "供应商" + supplier.Name + "不存在。\n可能已删除，请重新查询。",
Title = "提示"
}
);
return;
}
context.Remove(existingSupplier);
context.SaveChanges();
}
NotificationRequest.Raise(
new Notification
{
Content = "已删除。",
Title = "提示"
}
);
Suppliers.Remove(supplier);
SuppliersView.Refresh();
TotalRecords -= 1;
TotalPages = (int)Math.Ceiling(1.0 * TotalRecords / PageSize);
if (TotalPages == 0)
{
PageIndex = 0;
}
else if (PageIndex > TotalPages)
{
PageIndex = TotalPages;
SuppliersView = CollectionViewSource.GetDefaultView(Suppliers.Skip((PageIndex - 1) * PageSize).Take(PageSize));
}
}
}
);
}
private void Save()
{
using (var context = new MasterDataContext())
{
if (!Validate(context))
{
return;
}
var existingSupplier = context.Suppliers
.Include(s => s.Contacts)
.FirstOrDefault(s => s.Id == CurrentSupplier.Id);
if (existingSupplier == null)
{
context.Add(CurrentSupplier);
}
else
{
context.Entry(existingSupplier).CurrentValues.SetValues(CurrentSupplier);
foreach (var contact in CurrentSupplier.Contacts)
{
var existingContact = existingSupplier.Contacts
.FirstOrDefault(c => c.Id == contact.Id);
if (existingContact == null)
{
existingSupplier.Contacts.Add(contact);
}
else
{
context.Entry(existingContact).CurrentValues.SetValues(contact);
}
}
foreach (var contact in existingSupplier.Contacts)
{
if (!CurrentSupplier.Contacts.Any(c => c.Id == contact.Id))
{
context.Remove(contact);
}
}
}
context.SaveChanges();
NotificationRequest.Raise(new Notification {
Content = "保存成功", Title = "提示"
});
IsEdit = true;
}
}