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PropertySet class

Represents a property set.


var propertySet = new Windows.Foundation.Collections.PropertySet();

The PropertySet class has these types of members:

The PropertySet class has these constructors.

Constructor	Description
PropertySet	Creates and initializes a new instance of the property set.

The PropertySet class has these events.

Event	Description
MapChanged	Occurs when the observable map has changed.

The PropertySet class has these methods. With C#, Visual Basic, and C++, it also inherits methods from the Object class.

Method	Description
Add(KeyValuePair) [C#, VB]	Adds a new key-value pair to the PropertySet.
Add(String) [C#, VB]	Adds an item to the PropertySet.
Clear	Removes all items from the property set.
Contains [C#, VB]	Returns a value that indicates whether a specified key-value pair exists in the PropertySet.
ContainsKey [C#, VB]	Returns a value that indicates whether a specified key exists in the PropertySet.
CopyTo [C#, VB]	Copies the elements of the collection to an array, starting at a particular array index.
First [C++, JavaScript]	Returns an iterator to enumerate the items in the property set.
GetView [C++, JavaScript]	Gets an immutable view of the property set.
HasKey [C++, JavaScript]	Indicates whether the property set has an item with the specified key.
Insert [C++, JavaScript]	Adds an item to the property set.
Lookup [C++, JavaScript]	Retrieves the value for the specified key.
Remove [C++, JavaScript]	Removes an item from the property set.
Remove(KeyValuePair) [C#, VB]	Removes a specific key-value pair from the PropertySet.
Remove(String) [C#, VB]	Removes a specific item from the PropertySet.
TryGetValue [C#, VB]	Returns a value that indicates whether a specified key exists in the PropertySet. If an item with that key exists, the item is retrieved as an out parameter.

The PropertySet class has these properties.

Property	Access type	Description
Count [C#, VB]	Read-only	Gets the number of elements contained in the collection.
IsReadOnly [C#, VB]	Read-only	Gets a value indicating whether the dictionary is read-only.
Item [C#, VB]	Read/write	Gets or sets the element value at the specified key index.
Keys [C#, VB]	Read-only	Gets an ICollection object containing the keys of the PropertySet.
Size [C++, JavaScript]	Read-only	Gets the number of items contained in the property set.
Values [C#, VB]	Read-only	Gets an ICollection object containing the values of the PropertySet .

Implements a map with keys of type String and values of type PropertyValue.

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

Minimum supported client	Windows 8 [Windows Store apps, desktop apps]
Minimum supported server	Windows Server 2012 [Windows Store apps, desktop apps]
Minimum supported phone	Windows Phone 8
Namespace	Windows.Foundation.Collections Windows::Foundation::Collections [C++]
Metadata	Windows.winmd
DLL	Windows.Foundation.dll