NotifyCollectionChangedEventArgs() [3/11]

System.Collections.Specialized.NotifyCollectionChangedEventArgs.NotifyCollectionChangedEventArgs ( NotifyCollectionChangedAction action, object? changedItem, int index )

inline

Definition at line 39 of file NotifyCollectionChangedEventArgs.cs.

    {
        switch (action)
        {
        case NotifyCollectionChangedAction.Reset:
            if (changedItem != null)
            {
                throw new ArgumentException(System.SR.ResetActionRequiresNullItem, "action");
            }
            if (index != -1)
            {
                throw new ArgumentException(System.SR.ResetActionRequiresIndexMinus1, "action");
            }
            break;
        case NotifyCollectionChangedAction.Add:
            _newItems = new SingleItemReadOnlyList(changedItem);
            _newStartingIndex = index;
            break;
        case NotifyCollectionChangedAction.Remove:
            _oldItems = new SingleItemReadOnlyList(changedItem);
            _oldStartingIndex = index;
            break;
        default:
            throw new ArgumentException(System.SR.MustBeResetAddOrRemoveActionForCtor, "action");
        }
        _action = action;
    }

References System.Collections.Specialized.NotifyCollectionChangedEventArgs._action, System.Collections.Specialized.NotifyCollectionChangedEventArgs._newItems, System.Collections.Specialized.NotifyCollectionChangedEventArgs._newStartingIndex, System.Collections.Specialized.NotifyCollectionChangedEventArgs._oldItems, System.Collections.Specialized.NotifyCollectionChangedEventArgs._oldStartingIndex, System.action, System.index, System.SR.MustBeResetAddOrRemoveActionForCtor, System.SR.ResetActionRequiresIndexMinus1, and System.SR.ResetActionRequiresNullItem.