private void InitializeListBox(int?index = null)
{
_haltEvents = true;
listBox1.Items.Clear();
foreach (ItemPricingModel price in ExistingItems)
{
if (RemovedItems.Contains(price))
{
continue;
}
AddItemPricingToListBox(price);
}
foreach (ItemPricingModel price in NewItems)
{
AddItemPricingToListBox(price);
}
if (listBox1.Items.Count > 0)
{
FormattedListBoxItem item = listBox1.Items[0] as FormattedListBoxItem;
if (index.HasValue)
{
if (index.Value >= listBox1.Items.Count)
{
item = (FormattedListBoxItem)listBox1.Items[listBox1.Items.Count - 1];
}
else
{
item = (FormattedListBoxItem)listBox1.Items[index.Value];
}
}
listBox1.SelectedItem = item;
if (item != null)
{
item.IsSelected = true;
InitializeFields((ItemPricingModel)item.ReferenceObject);
}
buttonRemove.IsEnabled = true;
SetReadOnly(false);
}
else
{
ClearFields();
buttonRemove.IsEnabled = false;
SetReadOnly(true);
}
_haltEvents = false;
}
public virtual void RejectChange(T item, bool applyToItem)
{
if (AddedItems.Contains(item))
{
RemoveItem(Items.IndexOf(item));
}
else if (RemovedItems.Contains(item))
{
InsertItem(Items.Count, item);
}
else
{
throw new ArgumentOutOfRangeException(nameof(item), "The specified item does not exist in this collection.");
}
if (applyToItem && item is IRevertibleChangeTracking)
{
((IRevertibleChangeTracking)item).RejectChanges();
}
}