public void BeginUpdate()
{
ViewFactory factory = ViewFactory.IBindingListINotifyPropertyChangedItems();
ObjectListView view = factory.View;
IList list = factory.List;
view.BeginUpdate();
NotifyingListItem item = new NotifyingListItem();
view.Add(item); // normally would raise ListChanged (ItemAdded)
item.IntegerValue = 9; // normally would raise ListChanged (ItemChanged, reflecting PropertyChanged)
Assert.AreEqual(0, factory.ListChangedAddedCount);
Assert.AreEqual(0, factory.ListChangedItemChangedCount);
view.EndUpdate();
Assert.AreEqual(0, factory.ListChangedAddedCount);
Assert.AreEqual(0, factory.ListChangedItemChangedCount);
Assert.AreEqual(1, factory.ListChangedResetCount);
}
public void ListChangedItemReplacedAndUpdated()
{
BindingList<NotifyingListItem> list = new BindingList<NotifyingListItem>();
list.Add(new NotifyingListItem(100, "aaa", new DateTime(1970, 1, 1)));
list.Add(new NotifyingListItem(80, "bbb", new DateTime(1980, 12, 12)));
list.Add(new NotifyingListItem(60, "ccc", new DateTime(1975, 6, 6)));
ObjectListView view = new ObjectListView(list);
SetupListEventHandlers(view);
NotifyingListItem item = new NotifyingListItem(50, "555", new DateTime(1955, 5, 5));
list[2] = item;
Assert.AreEqual(1, this.listChangedItemChangedRaised);
item.IntegerValue = 60;
Assert.AreEqual(2, this.listChangedItemChangedRaised);
}
public void ListChangedNotifyingItemChanged()
{
BindingList<NotifyingListItem> list = new BindingList<NotifyingListItem>();
NotifyingListItem item = new NotifyingListItem();
list.Add(item);
ObjectListView view = new ObjectListView(list);
this.SetupListEventHandlers(view);
Assert.AreEqual(0, this.listChangedAddedRaised);
Assert.AreEqual(0, this.listChangedDeletedRaised);
Assert.AreEqual(0, this.listChangedItemChangedRaised);
Assert.AreEqual(0, this.listChangedResetRaised);
item.IntegerValue++;
Assert.AreEqual(0, this.listChangedAddedRaised);
Assert.AreEqual(0, this.listChangedDeletedRaised);
Assert.AreEqual(1, this.listChangedItemChangedRaised);
Assert.AreEqual(0, this.listChangedResetRaised);
}
public void FilterPredicateVaryingListItemProperties()
{
ViewFactory factory = ViewFactory.IBindingListINotifyPropertyChangedItems();
ObjectListView view = factory.View;
IList list = factory.List;
list.Add(new NotifyingListItem(1, "aaa", DateTime.Now));
list.Add(new NotifyingListItem(2, "bbb", DateTime.Now));
NotifyingListItem changingItem = new NotifyingListItem(3, "ccc", DateTime.Now);
list.Add(changingItem);
list.Add(new NotifyingListItem(4, "ddd", DateTime.Now));
list.Add(new NotifyingListItem(5, "eee", DateTime.Now));
view.ItemType = typeof(NotifyingListItem);
view.FilterPredicate = delegate(object listItem) { return ((NotifyingListItem)listItem).IntegerValue < 3; };
Assert.AreEqual(2, view.Count);
changingItem.IntegerValue = 0;
Assert.AreEqual(3, view.Count);
}
public void EndUpdateWithoutChanges()
{
ViewFactory factory = ViewFactory.IBindingListINotifyPropertyChangedItems();
ObjectListView view = factory.View;
NotifyingListItem item = new NotifyingListItem();
view.Add(item);
item.IntegerValue = 9;
factory.ClearEventCounts();
view.BeginUpdate();
view.EndUpdate();
Assert.AreEqual(0, factory.ListChangedResetCount);
}