Resource​Qualifier​Observable​Map Resource​Qualifier​Observable​Map Resource​Qualifier​Observable​Map Class

Definition

Notifies listeners of dynamic changes to a map of ResourceQualifier objects, such as when items get added or removed, and allows qualifier values to change.

public : sealed class ResourceQualifierObservableMap : IIterable, IMap, IObservableMappublic sealed class ResourceQualifierObservableMap : IEnumerable, IDictionary, IObservableMapPublic NotInheritable Class ResourceQualifierObservableMap Implements IEnumerable, IDictionary, IObservableMap
Attributes
Windows 10 requirements
Device family
Windows 10 (introduced v10.0.10240.0)
API contract
Windows.Foundation.UniversalApiContract (introduced v1)

Remarks

Collection member lists

For JavaScript, ResourceQualifierObservableMap supports using an index to access items.

Properties

Item[TKey] Item[TKey] Item[TKey]

Gets or sets the element with the specified key.

This member is not implemented in C++TValue this[TKey key] { get; set; }Property Item(key As TKey) As TValue
Parameters
key
TKey TKey TKey

The key of the element to get or set.

Value
TValue TValue TValue

The element with the specified key.

Attributes
Exceptions

key is null.

The property is retrieved and key is not found.

The property is set and the System.Collections.Generic.IDictionary`2 is read-only.

Keys Keys Keys

Gets an System.Collections.Generic.ICollection`1 containing the keys of the System.Collections.Generic.IDictionary`2.

This member is not implemented in C++ICollection<TKey> Keys { get; }ReadOnly Property Keys As ICollection(Of TKey)
Value

An System.Collections.Generic.ICollection`1 containing the keys of the object that implements System.Collections.Generic.IDictionary`2.

Attributes

Size Size Size

Gets the number of ResourceQualifier objects in the observable map.

public : unsigned short Size { get; }This member is not implemented in C#This member is not implemented in VB.Net
Value
unsigned short uint uint

The number of ResourceQualifier objects in the map.

Attributes

Values Values Values

Gets an System.Collections.Generic.ICollection`1 containing the values in the System.Collections.Generic.IDictionary`2.

This member is not implemented in C++ICollection<TValue> Values { get; }ReadOnly Property Values As ICollection(Of TValue)
Value

An System.Collections.Generic.ICollection`1 containing the values in the object that implements System.Collections.Generic.IDictionary`2.

Attributes

Methods

Add(TKey, TValue) Add(TKey, TValue) Add(TKey, TValue)

Adds an element with the provided key and value to the System.Collections.Generic.IDictionary`2.

This member is not implemented in C++void Add(TKey key, TValue value)Sub Add(key As TKey, value As TValue)
Parameters
key
TKey TKey TKey

The object to use as the key of the element to add.

value
TValue TValue TValue

The object to use as the value of the element to add.

Attributes
Exceptions

key is null.

An element with the same key already exists in the System.Collections.Generic.IDictionary`2.

The System.Collections.Generic.IDictionary`2 is read-only.

Clear() Clear() Clear()

Removes all items from the observable map.

public : void Clear()This member is not implemented in C#This member is not implemented in VB.Net
Attributes

ContainsKey(TKey) ContainsKey(TKey) ContainsKey(TKey)

Determines whether the System.Collections.Generic.IDictionary`2 contains an element with the specified key.

This member is not implemented in C++bool ContainsKey(TKey key)Function ContainsKey(key As TKey) As Boolean
Parameters
key
TKey TKey TKey

The key to locate in the System.Collections.Generic.IDictionary`2.

Returns

true if the System.Collections.Generic.IDictionary`2 contains an element with the key; otherwise, false.

Attributes
Exceptions

key is null.

First() First() First()

Returns an iterator to enumerate the items in the observable map.

public : IIterator<IKeyValuePair<PlatForm::String, PlatForm::String>> First()This member is not implemented in C#This member is not implemented in VB.Net
Returns
IIterator<IKeyValuePair<PlatForm::String, PlatForm::String>> IIterator<KeyValuePair<string, string>> IIterator<KeyValuePair<string, string>>

The iterator. The current position of the iterator is index 0, or the end of the observable map if the observable map is empty.

Attributes

GetEnumerator() GetEnumerator() GetEnumerator()

Returns an enumerator that iterates through the collection.

This member is not implemented in C++IEnumerator<T> GetEnumerator()Function GetEnumerator As IEnumerator(Of T)
Returns

An enumerator that can be used to iterate through the collection.

Attributes

GetView() GetView() GetView()

Returns an unchangeable view of the observable map.

public : IMapView<PlatForm::String, PlatForm::String> GetView()This member is not implemented in C#This member is not implemented in VB.Net
Returns
IMapView<PlatForm::String, PlatForm::String> IReadOnlyDictionary<string, string> IReadOnlyDictionary<string, string>

The view of the map.

Attributes

HasKey(String) HasKey(String) HasKey(String)

Determines whether the observable map contains the specified key.

public : PlatForm::Boolean HasKey(PlatForm::String key)This member is not implemented in C#This member is not implemented in VB.Net
Parameters
key
PlatForm::String String String

The key to locate in the observable map.

Returns
PlatForm::Boolean bool bool

TRUE if the key is found, otherwise FALSE if it is not found.

Attributes

Insert(String, String) Insert(String, String) Insert(String, String)

Inserts or replaces an item in the observable map.

public : PlatForm::Boolean Insert(PlatForm::String key, PlatForm::String value)This member is not implemented in C#This member is not implemented in VB.Net
Parameters
key
PlatForm::String String String

The key associated with the item to insert.

value
PlatForm::String String String

The item to insert.

Returns
PlatForm::Boolean bool bool

TRUE if an item with the specified key is an existing item and was replaced, otherwise FALSE.

Attributes

Lookup(String) Lookup(String) Lookup(String)

Returns the qualifier name at the specified key in the observable map.

public : PlatForm::String Lookup(PlatForm::String key)This member is not implemented in C#This member is not implemented in VB.Net
Parameters
key
PlatForm::String String String

The key to locate in the observable map.

Returns
PlatForm::String string string

The value, if an item with the specified key exists. Use the HasKey method to determine whether the key exists.

Attributes

Remove(TKey) Remove(TKey) Remove(TKey)

Removes the element with the specified key from the System.Collections.Generic.IDictionary`2.

This member is not implemented in C++bool Remove(TKey key)Function Remove(key As TKey) As Boolean
Parameters
key
TKey TKey TKey

The key of the element to remove.

Returns

true if the element is successfully removed; otherwise, false. This method also returns false if key was not found in the original System.Collections.Generic.IDictionary`2.

Attributes
Exceptions

key is null.

The System.Collections.Generic.IDictionary`2 is read-only.

Remove(String) Remove(String) Remove(String)

Removes an item from the observable map.

public : void Remove(PlatForm::String key)This member is not implemented in C#This member is not implemented in VB.Net
Parameters
key
PlatForm::String String String

The key associated with the item to remove.

Attributes

Remarks

For the C# and Microsoft Visual Basic version of the Remove(String) method, see Remove.

TryGetValue(TKey, out TValue) TryGetValue(TKey, out TValue) TryGetValue(TKey, out TValue)

Gets the value associated with the specified key.

This member is not implemented in C++bool TryGetValue(TKey key, out TValue value)Function TryGetValue(key As TKey, ByRef value As TValue) As Boolean
Parameters
key
TKey TKey TKey

The key whose value to get.

value
TValue TValue TValue

When this method returns, the value associated with the specified key, if the key is found; otherwise, the default value for the type of the value parameter. This parameter is passed uninitialized.

Returns

true if the object that implements System.Collections.Generic.IDictionary`2 contains an element with the specified key; otherwise, false.

Attributes
Exceptions

key is null.

Events

MapChanged MapChanged MapChanged

Occurs when the map changes.

public : event MapChangedEventHandler MapChangedpublic event MapChangedEventHandler MapChangedPublic Event MapChanged
Attributes