public DataChanged(DataChangedAction action, IList <DataType> changedItems)
{
Action = action;
switch (action)
{
case DataChangedAction.Add:
NewItems = changedItems;
break;
case DataChangedAction.Remove:
OldItems = changedItems;
break;
case DataChangedAction.Update:
UpdatedItems = changedItems;
break;
case DataChangedAction.Reset:
OldItems = changedItems;
break;
default:
throw new ArgumentOutOfRangeException(nameof(action));
}
}
public DataChanged(DataChangedAction action, IList <DataType> newItems, IList <DataType> oldItems)
{
if (action != DataChangedAction.Replace)
{
throw new ArgumentOutOfRangeException(nameof(action));
}
Action = action;
NewItems = newItems;
OldItems = oldItems;
}
