NotifyCollectionChangedEventArgs() [5/11]

System.Collections.Specialized.NotifyCollectionChangedEventArgs.NotifyCollectionChangedEventArgs ( NotifyCollectionChangedAction action, IList? changedItems, int startingIndex )

inline

Definition at line 72 of file NotifyCollectionChangedEventArgs.cs.

    {
        switch (action)
        {
        case NotifyCollectionChangedAction.Reset:
            if (changedItems != null)
            {
                throw new ArgumentException(System.SR.ResetActionRequiresNullItem, "action");
            }
            if (startingIndex != -1)
            {
                throw new ArgumentException(System.SR.ResetActionRequiresIndexMinus1, "action");
            }
            break;
        case NotifyCollectionChangedAction.Add:
        case NotifyCollectionChangedAction.Remove:
            if (changedItems == null)
            {
                throw new ArgumentNullException("changedItems");
            }
            if (startingIndex < -1)
            {
                throw new ArgumentException(System.SR.IndexCannotBeNegative, "startingIndex");
            }
            if (action == NotifyCollectionChangedAction.Add)
            {
                _newItems = new ReadOnlyList(changedItems);
                _newStartingIndex = startingIndex;
            }
            else
            {
                _oldItems = new ReadOnlyList(changedItems);
                _oldStartingIndex = startingIndex;
            }
            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.SR.IndexCannotBeNegative, System.SR.MustBeResetAddOrRemoveActionForCtor, System.SR.ResetActionRequiresIndexMinus1, and System.SR.ResetActionRequiresNullItem.