private void RaiseChangedKeyEvent
(
tIndexedItem item,
tIndexKeyType oldKeyValue,
tIndexKeyType newKeyValue
)
{
foreach (ChangedKeyDelegate listener in this.changedKeyListeners)
{
listener(item, oldKeyValue, newKeyValue);
}
}
public void SetValue(tIndexKeyType value)
{
Throw <System.ArgumentException> .If(value == null, "Indexed list can only hold items with non-null item keys");
if (value.Equals(this.value))
{
return;
}
Throw <System.ArgumentException> .If(this.RaiseChangingKeyEvent(this.item, this.value, value).IsCanceled, "Updated was canceled. Duplicate key was encountered in a list containing this item.");
this.RaiseChangedKeyEvent(item, this.value, this.value = value);
}
private IndexKeyChangingEventArgs RaiseChangingKeyEvent
(
tIndexedItem item,
tIndexKeyType oldKeyValue,
tIndexKeyType newKeyValue
)
{
IndexKeyChangingEventArgs args = new IndexKeyChangingEventArgs();
foreach (ChangingKeyDelegate listener in this.changingKeyListeners)
{
listener(item, oldKeyValue, newKeyValue, args);
if (args.IsCanceled)
{
break;
}
}
return(args);
}
