	Name	Description
	AlarmAndEventsSet	Properties Related to Alarm and Condition Values.
	BasicSet	Set of basic properties defined by the OPC Foundation. Includes dynamic (Value/Timestamp/Quality) properties.
	BasicSetNoVtq	Set of basic properties defined by the OPC Foundation, excluding the dynamic (Value/Timestamp/Quality) properties.
	Comparer	Gets the IEqualityComparer object that is used to determine equality for the values in the set. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	Count	Gets the number of elements that are contained in a set. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	ExtensionSet	Recommended properties related to the Item Value.
	OpcFoundationSet	Basic and Recommended properties, as defined by OPC Foundation.
	RecommendedSet	Properties recommended by OPC Foundation (related to Item Value, and also to Alarm and Condition Values).
	VtqSet	Dynamic (Value/Timestamp/Quality) properties.

	Name	Description
	Add	Overloaded. Produces the set union of two property sets.
	Clear	Removes all elements from a HashSet object. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	Contains	Determines whether a HashSet object contains the specified element. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	CopyTo	Overloaded. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	Equals	Overloaded. Determines whether the specified property sets contain the same elements.
	ExceptWith	Removes all elements in the specified collection from the current HashSet object. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	GetEnumerator	Returns an enumerator that iterates through a HashSet object. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	GetHashCode	Serves as the default hash function. Serves as a hash function for a OPC property sets.
	GetObjectData	Implements the System.Runtime.Serialization.ISerializable interface and returns the data needed to serialize a HashSet object. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	GetType	Gets the System.Type of the current instance. (Inherited from object)
	IntersectWith	Modifies the current HashSet object to contain only elements that are present in that object and in the specified collection. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	IsProperSubsetOf	Determines whether a HashSet object is a proper subset of the specified collection. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	IsProperSupersetOf	Determines whether a HashSet object is a proper superset of the specified collection. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	IsSubsetOf	Determines whether a HashSet object is a subset of the specified collection. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	IsSupersetOf	Determines whether a HashSet object is a superset of the specified collection. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	OnDeserialization	Implements the System.Runtime.Serialization.ISerializable interface and raises the deserialization event when the deserialization is complete. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	Overlaps	Determines whether the current HashSet object and a specified collection share common elements. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	Remove	Removes the specified element from a HashSet object. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	RemoveWhere	Removes all elements that match the conditions defined by the specified predicate from a HashSet collection. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	SetEquals	Determines whether a HashSet object and the specified collection contain the same elements. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	SymmetricExceptWith	Modifies the current HashSet object to contain only elements that are present either in that object or in the specified collection, but not both. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	ToString	Returns a string that represents the current object. (Inherited from object)
	TrimExcess	Sets the capacity of a HashSet object to the actual number of elements it contains, rounded up to a nearby, implementation-specific value. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	TryGetValue	Searches the set for a given value and returns the equal value it finds, if any. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)
	UnionWith	Modifies the current HashSet object to contain all elements that are present in itself, the specified collection, or both. (Inherited from System.Collections.Generic.HashSet<DAPropertyId>)

	Name	Description
	Finalize	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from object)
	MemberwiseClone	Creates a shallow copy of the current System.Object. (Inherited from object)

Addition	Produces the set union of two property sets.
Equality	Determines whether the specified property sets contain the same elements.
Inequality	Determines whether the specified property sets contain different elements.

Reference