	名前	解説
	Count	Gets the number of items contained in the ComboBoxItemList instance.
	Item	Gets or sets the item at the specified index.

	名前	解説
	Add	Adds an item to the ComboBoxItemList.
	AddRange	Adds items of the specified collection to the end of the ComboBoxItemList.
	Clear	Removes all items from the ComboBoxItemList.
	Contains	Determines whether an item is in the ComboBoxItemList.
	IndexOf	Searches for the specified item and returns the zero-based index.
	Insert	Inserts item into the ComboBoxItemList at the specified index.
	InsertRange	Inserts items into the ComboBoxItemList at the specified index.
	Remove	Removes the first occurrence of a specified item from the collection.
	RemoveAll	Removes all the items that match the conditions defined by the specified predicate.
	RemoveAt	Removes the item at the specified index of the collection.
	RemoveRange	Removes a range of elements from the ComboBoxItemList.