TreeNodeItemCollection Class

public class TreeNodeItemCollection : ISelectedTreeItemCollection

public TreeNodeItemCollection(bool useHashSet)

Parameter	Type	Description
useHashSet	bool	Whether to use a hash set to handle ActiproSoftware.Windows.Controls.Grids.Primitives.TreeNodeItemCollection.Contains(ActiproSoftware.Windows.Controls.Grids.Primitives.TreeNode) checks faster. Only use for selection collections.

public bool CanFilter { get; }

Property Value

bool:

true if this view supports filtering via the Filter property; otherwise, false.

public bool CanGroup { get; }

Property Value

bool:

true if this view supports grouping via the GroupDescriptions property; otherwise, false.

public bool CanSort { get; }

Property Value

bool:

true if this view supports sorting via the SortDescriptions property; otherwise, false.

public int Count { get; }

Property Value

int:

The count of items in the collection.

public CultureInfo Culture { get; set; }

Property Value

CultureInfo:

The cultural info for any operations of the view that may differ by culture, such as sorting.

public object CurrentItem { get; }

Property Value

object:

The current item in the view.

public int CurrentPosition { get; }

Property Value

int:

The ordinal position of the CurrentItem within the view.

public Predicate<object> Filter { get; set; }

Property Value

Predicate<object>:

A callback used to determine if an item is suitable for inclusion in the view.

public ObservableCollection<GroupDescription> GroupDescriptions { get; }

Property Value

ObservableCollection<GroupDescription>:

The collection of System.ComponentModel.GroupDescription objects that describe how the items in the collection are grouped in the view.

public ReadOnlyObservableCollection<object> Groups { get; }

Property Value

ReadOnlyObservableCollection<object>:

The top-level groups.

public bool IsCurrentAfterLast { get; }

Property Value

bool:

true if the CurrentItem of the view is beyond the end of the collection; otherwise, false.

public bool IsCurrentBeforeFirst { get; }

Property Value

bool:

true if the CurrentItem of the view is beyond the beginning of the collection; otherwise, false.

public bool IsEmpty { get; }

Property Value

bool:

true if the resulting view is empty; otherwise, false.

public bool IsReadOnly { get; }

Property Value

bool:

true if the collection is read-only; otherwise, false.

public object this[int index] { get; set; }

Parameter	Type	Description
index	int	The index of the item to return.

Property Value

object:

The item at the specified index.

public SortDescriptionCollection SortDescriptions { get; }

Property Value

SortDescriptionCollection:

A collection of System.ComponentModel.SortDescription objects that describe how the items in the collection are sorted in the view.

public IEnumerable SourceCollection { get; }

Property Value

IEnumerable:

The underlying collection.

public void Add(object item)

Parameter	Type	Description
item	object	The object to add to the collection.

public void Clear()

public bool Contains(object item)

Parameter	Type	Description
item	object	The object to locate in the collection.

Returns

bool:

true if item is found in the collection; otherwise, false.

public void CopyTo(object[] array, int arrayIndex)

Parameter	Type	Description
array	object[]	The one-dimensional Array that is the destination of the elements copied from the collection. The Array must have zero-based indexing.
arrayIndex	int	The zero-based index in array at which copying begins.

public IDisposable DeferRefresh()

Returns

IDisposable:

An IDisposable object that you can use to dispose of the calling object.

public IEnumerator<object> GetEnumerator()

Returns

IEnumerator<object>:

An IEnumerator object for the entire collection

Remarks

Enumerators are intended to be used only to read data in the collection. Enumerators cannot be used to modify the underlying collection.

The enumerator does not have exclusive access to the collection.

When an enumerator is instantiated, it takes a snapshot of the current state of the collection. If changes are made to the collection, such as adding, modifying or deleting elements, the snapshot gets out of sync and the enumerator throws an InvalidOperationException. Two enumerators instantiated from the same collection at the same time can have different snapshots of the collection.

public int IndexOf(object item)

Parameter	Type	Description
item	object	The object to locate in the list.

Returns

int:

The index of item if found in the list; otherwise, -1.

public void Insert(int index, object item)

Parameter	Type	Description
index	int	The zero-based index at which the item should be inserted.
item	object	The item to insert.

Remarks

If index is equal to Count, value is added to the end of the collection.

public bool MoveCurrentTo(object item)

Parameter	Type	Description
item	object	The item to set.

Returns

bool:

true if the resulting CurrentItem is within the view; otherwise, false.

public bool MoveCurrentToFirst()

Returns

bool:

true if the resulting CurrentItem is within the view; otherwise, false.

public bool MoveCurrentToLast()

Returns

bool:

true if the resulting CurrentItem is within the view; otherwise, false.

public bool MoveCurrentToNext()

Returns

bool:

true if the resulting CurrentItem is within the view; otherwise, false.

public bool MoveCurrentToPosition(int position)

Parameter	Type	Description
position	int	The index to set the CurrentItem to.

Returns

bool:

true if the resulting CurrentItem is within the view; otherwise, false.

public bool MoveCurrentToPrevious()

Returns

bool:

true if the resulting CurrentItem is within the view; otherwise, false.

public void Refresh()

public bool Remove(object item)

Parameter	Type	Description
item	object	The item to remove.

Returns

bool

public void RemoveAt(int index)

Parameter	Type	Description
index	int	The zero-based index of the item to remove.

public event NotifyCollectionChangedEventHandler CollectionChanged

Event Type

NotifyCollectionChangedEventHandler

public event EventHandler CurrentChanged

Event Type

EventHandler

public event CurrentChangingEventHandler CurrentChanging

Event Type

CurrentChangingEventHandler