ReadOnlyObservableCollection<T> ReadOnlyObservableCollection<T> ReadOnlyObservableCollection<T> ReadOnlyObservableCollection<T> Class

Definition

Represents a read-only ObservableCollection<T>.

generic <typename T>
public ref class ReadOnlyObservableCollection : System::Collections::ObjectModel::ReadOnlyCollection<T>, System::Collections::Specialized::INotifyCollectionChanged, System::ComponentModel::INotifyPropertyChanged
[System.Serializable]
public class ReadOnlyObservableCollection<T> : System.Collections.ObjectModel.ReadOnlyCollection<T>, System.Collections.Specialized.INotifyCollectionChanged, System.ComponentModel.INotifyPropertyChanged
type ReadOnlyObservableCollection<'T> = class
    inherit ReadOnlyCollection<'T>
    interface INotifyCollectionChanged
    interface INotifyPropertyChanged
Public Class ReadOnlyObservableCollection(Of T)
Inherits ReadOnlyCollection(Of T)
Implements INotifyCollectionChanged, INotifyPropertyChanged

Type Parameters

T

The type of elements in the collection.

Inheritance
ReadOnlyObservableCollection<T>ReadOnlyObservableCollection<T>ReadOnlyObservableCollection<T>ReadOnlyObservableCollection<T>
Attributes
Implements

Remarks

This class is a read-only wrapper around an ObservableCollection<T>. If changes are made to the underlying collection, the ReadOnlyObservableCollection<T> reflects those changes. To be notified of the changes to this class, subscribe to the CollectionChanged or PropertyChanged event.

Constructors

ReadOnlyObservableCollection<T>(ObservableCollection<T>) ReadOnlyObservableCollection<T>(ObservableCollection<T>) ReadOnlyObservableCollection<T>(ObservableCollection<T>) ReadOnlyObservableCollection<T>(ObservableCollection<T>)

Initializes a new instance of the ReadOnlyObservableCollection<T> class that serves as a wrapper around the specified ObservableCollection<T>.

Methods

Contains(T) Contains(T) Contains(T) Contains(T)

Determines whether an element is in the ReadOnlyCollection<T>.

(Inherited from ReadOnlyCollection<T>)
CopyTo(T[], Int32) CopyTo(T[], Int32) CopyTo(T[], Int32) CopyTo(T[], Int32)

Copies the entire ReadOnlyCollection<T> to a compatible one-dimensional Array, starting at the specified index of the target array.

(Inherited from ReadOnlyCollection<T>)
Equals(Object) Equals(Object) Equals(Object) Equals(Object)

Determines whether the specified object is equal to the current object.

(Inherited from Object)
GetEnumerator() GetEnumerator() GetEnumerator() GetEnumerator()

Returns an enumerator that iterates through the ReadOnlyCollection<T>.

(Inherited from ReadOnlyCollection<T>)
GetHashCode() GetHashCode() GetHashCode() GetHashCode()

Serves as the default hash function.

(Inherited from Object)
GetType() GetType() GetType() GetType()

Gets the Type of the current instance.

(Inherited from Object)
IndexOf(T) IndexOf(T) IndexOf(T) IndexOf(T)

Searches for the specified object and returns the zero-based index of the first occurrence within the entire ReadOnlyCollection<T>.

(Inherited from ReadOnlyCollection<T>)
MemberwiseClone() MemberwiseClone() MemberwiseClone() MemberwiseClone()

Creates a shallow copy of the current Object.

(Inherited from Object)
OnCollectionChanged(NotifyCollectionChangedEventArgs) OnCollectionChanged(NotifyCollectionChangedEventArgs) OnCollectionChanged(NotifyCollectionChangedEventArgs) OnCollectionChanged(NotifyCollectionChangedEventArgs)

Raises the CollectionChanged event using the provided arguments.

OnPropertyChanged(PropertyChangedEventArgs) OnPropertyChanged(PropertyChangedEventArgs) OnPropertyChanged(PropertyChangedEventArgs) OnPropertyChanged(PropertyChangedEventArgs)

Raises the PropertyChanged event using the provided arguments.

ToString() ToString() ToString() ToString()

Returns a string that represents the current object.

(Inherited from Object)

Events

CollectionChanged CollectionChanged CollectionChanged CollectionChanged

Occurs when an item is added or removed.

PropertyChanged PropertyChanged PropertyChanged PropertyChanged

Occurs when a property value changes.

Explicit Interface Implementations

ICollection.CopyTo(Array, Int32) ICollection.CopyTo(Array, Int32) ICollection.CopyTo(Array, Int32) ICollection.CopyTo(Array, Int32)

Copies the elements of the ICollection to an Array, starting at a particular Array index.

(Inherited from ReadOnlyCollection<T>)
ICollection<T>.Add(T) ICollection<T>.Add(T) ICollection<T>.Add(T) ICollection<T>.Add(T)

Adds an item to the ICollection<T>. This implementation always throws NotSupportedException.

(Inherited from ReadOnlyCollection<T>)
ICollection<T>.Clear() ICollection<T>.Clear() ICollection<T>.Clear() ICollection<T>.Clear()

Removes all items from the ICollection<T>. This implementation always throws NotSupportedException.

(Inherited from ReadOnlyCollection<T>)
ICollection<T>.Remove(T) ICollection<T>.Remove(T) ICollection<T>.Remove(T) ICollection<T>.Remove(T)

Removes the first occurrence of a specific object from the ICollection<T>. This implementation always throws NotSupportedException.

(Inherited from ReadOnlyCollection<T>)
IEnumerable.GetEnumerator() IEnumerable.GetEnumerator() IEnumerable.GetEnumerator() IEnumerable.GetEnumerator()

Returns an enumerator that iterates through a collection.

(Inherited from ReadOnlyCollection<T>)
IList.Add(Object) IList.Add(Object) IList.Add(Object) IList.Add(Object)

Adds an item to the IList. This implementation always throws NotSupportedException.

(Inherited from ReadOnlyCollection<T>)
IList.Clear() IList.Clear() IList.Clear() IList.Clear()

Removes all items from the IList. This implementation always throws NotSupportedException.

(Inherited from ReadOnlyCollection<T>)
IList.Contains(Object) IList.Contains(Object) IList.Contains(Object) IList.Contains(Object)

Determines whether the IList contains a specific value.

(Inherited from ReadOnlyCollection<T>)
IList.IndexOf(Object) IList.IndexOf(Object) IList.IndexOf(Object) IList.IndexOf(Object)

Determines the index of a specific item in the IList.

(Inherited from ReadOnlyCollection<T>)
IList.Insert(Int32, Object) IList.Insert(Int32, Object) IList.Insert(Int32, Object) IList.Insert(Int32, Object)

Inserts an item to the IList at the specified index. This implementation always throws NotSupportedException.

(Inherited from ReadOnlyCollection<T>)
IList.Remove(Object) IList.Remove(Object) IList.Remove(Object) IList.Remove(Object)

Removes the first occurrence of a specific object from the IList. This implementation always throws NotSupportedException.

(Inherited from ReadOnlyCollection<T>)
IList.RemoveAt(Int32) IList.RemoveAt(Int32) IList.RemoveAt(Int32) IList.RemoveAt(Int32)

Removes the IList item at the specified index. This implementation always throws NotSupportedException.

(Inherited from ReadOnlyCollection<T>)
IList<T>.Insert(Int32, T) IList<T>.Insert(Int32, T) IList<T>.Insert(Int32, T) IList<T>.Insert(Int32, T)

Inserts an item to the IList<T> at the specified index. This implementation always throws NotSupportedException.

(Inherited from ReadOnlyCollection<T>)
IList<T>.RemoveAt(Int32) IList<T>.RemoveAt(Int32) IList<T>.RemoveAt(Int32) IList<T>.RemoveAt(Int32)

Removes the IList<T> item at the specified index. This implementation always throws NotSupportedException.

(Inherited from ReadOnlyCollection<T>)
INotifyCollectionChanged.CollectionChanged INotifyCollectionChanged.CollectionChanged INotifyCollectionChanged.CollectionChanged INotifyCollectionChanged.CollectionChanged

Occurs when the collection changes.

INotifyPropertyChanged.PropertyChanged INotifyPropertyChanged.PropertyChanged INotifyPropertyChanged.PropertyChanged INotifyPropertyChanged.PropertyChanged

Occurs when a property value changes.

Properties

Count Count Count Count

Gets the number of elements contained in the ReadOnlyCollection<T> instance.

(Inherited from ReadOnlyCollection<T>)
ICollection.IsSynchronized ICollection.IsSynchronized ICollection.IsSynchronized ICollection.IsSynchronized

Gets a value indicating whether access to the ICollection is synchronized (thread safe).

(Inherited from ReadOnlyCollection<T>)
ICollection.SyncRoot ICollection.SyncRoot ICollection.SyncRoot ICollection.SyncRoot

Gets an object that can be used to synchronize access to the ICollection.

(Inherited from ReadOnlyCollection<T>)
ICollection<T>.IsReadOnly ICollection<T>.IsReadOnly ICollection<T>.IsReadOnly ICollection<T>.IsReadOnly

Gets a value indicating whether the ICollection<T> is read-only.

(Inherited from ReadOnlyCollection<T>)
IList.IsFixedSize IList.IsFixedSize IList.IsFixedSize IList.IsFixedSize

Gets a value indicating whether the IList has a fixed size.

(Inherited from ReadOnlyCollection<T>)
IList.IsReadOnly IList.IsReadOnly IList.IsReadOnly IList.IsReadOnly

Gets a value indicating whether the IList is read-only.

(Inherited from ReadOnlyCollection<T>)
IList.Item[Int32] IList.Item[Int32] IList.Item[Int32] IList.Item[Int32]

Gets the element at the specified index. A NotSupportedException occurs if you try to set the item at the specified index.

(Inherited from ReadOnlyCollection<T>)
IList<T>.Item[Int32] IList<T>.Item[Int32] IList<T>.Item[Int32] IList<T>.Item[Int32]

Gets the element at the specified index. An NotSupportedException occurs if you try to set the item at the specified index.

(Inherited from ReadOnlyCollection<T>)
Items Items Items Items

Returns the IList<T> that the ReadOnlyCollection<T> wraps.

(Inherited from ReadOnlyCollection<T>)
Item[Int32] Item[Int32] Item[Int32] Item[Int32]

Gets the element at the specified index.

(Inherited from ReadOnlyCollection<T>)

Extension Methods

CopyToDataTable<T>(IEnumerable<T>) CopyToDataTable<T>(IEnumerable<T>) CopyToDataTable<T>(IEnumerable<T>) CopyToDataTable<T>(IEnumerable<T>)

Returns a DataTable that contains copies of the DataRow objects, given an input IEnumerable<T> object where the generic parameter T is DataRow.

CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption) CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption) CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption) CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption)

Copies DataRow objects to the specified DataTable, given an input IEnumerable<T> object where the generic parameter T is DataRow.

CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption, FillErrorEventHandler) CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption, FillErrorEventHandler) CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption, FillErrorEventHandler) CopyToDataTable<T>(IEnumerable<T>, DataTable, LoadOption, FillErrorEventHandler)

Copies DataRow objects to the specified DataTable, given an input IEnumerable<T> object where the generic parameter T is DataRow.

Cast<TResult>(IEnumerable) Cast<TResult>(IEnumerable) Cast<TResult>(IEnumerable) Cast<TResult>(IEnumerable)

Casts the elements of an IEnumerable to the specified type.

OfType<TResult>(IEnumerable) OfType<TResult>(IEnumerable) OfType<TResult>(IEnumerable) OfType<TResult>(IEnumerable)

Filters the elements of an IEnumerable based on a specified type.

AsParallel(IEnumerable) AsParallel(IEnumerable) AsParallel(IEnumerable) AsParallel(IEnumerable)

Enables parallelization of a query.

AsQueryable(IEnumerable) AsQueryable(IEnumerable) AsQueryable(IEnumerable) AsQueryable(IEnumerable)

Converts an IEnumerable to an IQueryable.

Ancestors<T>(IEnumerable<T>) Ancestors<T>(IEnumerable<T>) Ancestors<T>(IEnumerable<T>) Ancestors<T>(IEnumerable<T>)

Returns a collection of elements that contains the ancestors of every node in the source collection.

Ancestors<T>(IEnumerable<T>, XName) Ancestors<T>(IEnumerable<T>, XName) Ancestors<T>(IEnumerable<T>, XName) Ancestors<T>(IEnumerable<T>, XName)

Returns a filtered collection of elements that contains the ancestors of every node in the source collection. Only elements that have a matching XName are included in the collection.

DescendantNodes<T>(IEnumerable<T>) DescendantNodes<T>(IEnumerable<T>) DescendantNodes<T>(IEnumerable<T>) DescendantNodes<T>(IEnumerable<T>)

Returns a collection of the descendant nodes of every document and element in the source collection.

Descendants<T>(IEnumerable<T>) Descendants<T>(IEnumerable<T>) Descendants<T>(IEnumerable<T>) Descendants<T>(IEnumerable<T>)

Returns a collection of elements that contains the descendant elements of every element and document in the source collection.

Descendants<T>(IEnumerable<T>, XName) Descendants<T>(IEnumerable<T>, XName) Descendants<T>(IEnumerable<T>, XName) Descendants<T>(IEnumerable<T>, XName)

Returns a filtered collection of elements that contains the descendant elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.

Elements<T>(IEnumerable<T>) Elements<T>(IEnumerable<T>) Elements<T>(IEnumerable<T>) Elements<T>(IEnumerable<T>)

Returns a collection of the child elements of every element and document in the source collection.

Elements<T>(IEnumerable<T>, XName) Elements<T>(IEnumerable<T>, XName) Elements<T>(IEnumerable<T>, XName) Elements<T>(IEnumerable<T>, XName)

Returns a filtered collection of the child elements of every element and document in the source collection. Only elements that have a matching XName are included in the collection.

InDocumentOrder<T>(IEnumerable<T>) InDocumentOrder<T>(IEnumerable<T>) InDocumentOrder<T>(IEnumerable<T>) InDocumentOrder<T>(IEnumerable<T>)

Returns a collection of nodes that contains all nodes in the source collection, sorted in document order.

Nodes<T>(IEnumerable<T>) Nodes<T>(IEnumerable<T>) Nodes<T>(IEnumerable<T>) Nodes<T>(IEnumerable<T>)

Returns a collection of the child nodes of every document and element in the source collection.

Remove<T>(IEnumerable<T>) Remove<T>(IEnumerable<T>) Remove<T>(IEnumerable<T>) Remove<T>(IEnumerable<T>)

Removes every node in the source collection from its parent node.

Applies to