	Name	Description
	Count	Gets the number of elements contained in the ICollection.
	IsReadOnly	Gets a value that indicates whether the ICollection is read-only.
	Item	Gets the ISparkline at the specified index.
	ReferenceError	Gets a value that indicates whether the current cell range is an invalid reference.
	Renderer	Gets or sets the renderer.
	Setting	Gets or sets the setting.

	Name	Description
	Add	Adds an item to the ICollection.
	Clear	Removes all items from the ICollection.
	Clone	Creates a new object that is a copy of the current instance.
	CloneSetting	Clones a new sparkline group that copies the setting of the current sparkline group.
	Contains	Determines whether the ICollection contains a specific value.
	CopyTo	Copies the elements of the ICollection to a System.Array, starting at a particular System.Array index.
	Deserialize	Loads the object from XML.
	Dispose	Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
	GetEnumerator	Returns an enumerator that iterates through the collection.
	GetExcelSetting	Gets the excel setting.
	GetGroupCoverCellRange	Gets the group cover cell range.
	GetObjectData	Populates a System.Runtime.Serialization.SerializationInfo with the data needed to serialize the target object.
	IsSwitchable	Checks if the group is switchable.
	ReLoadFormula	Reevaluates the formula which depends on the spread.
	Remove	Removes the first occurrence of a specific object from the ICollection.
	Serialize	Saves the object to XML.
	SwitchRowColumn	Switches sparkline rows or columns.

	Name	Description
	FireClearItems	Fires the clear items event.
	FireItemAdded	Fires the item added event.
	FireItemRemoved	Fires the item removed event.
	FireItemUpdated	Overloaded. Fires the item updated event.
	FireUpdated	Fires the updated event.
	OnClearItems	Raises the ClearItems event.
	OnItemAdded	Raises the ItemAdded event.
	OnItemRemoved	Raises the ItemRemoved event.
	OnItemUpdated	Raises the ItemUpdated event.
	OnUpdated	Raises the Updated event.

	Name	Description
	ClearItems	Occurs when a sparkline is added.
	FormulaChanged	Occurs when the date formula has changed.
	ItemAdded	Occurs when a sparkline is added.
	ItemRemoved	Occurs when a sparkline is added.
	ItemUpdated	Occurs when a property value changes.
	Updated	Occurs when a group has been updated.