Number of keys in this view.

Gets or sets the value associated with a given key. When getting a value, if this key is not found in the collection, then an ArgumentException is thrown. When setting a value, the value replaces any existing value in the dictionary. When setting a value, the key must be within the range of keys being viewed.

Returns a collection of the keys in this dictionary.

Returns a collection of the values in this dictionary. The ordering of values in this collection is the same as that in the Keys collection.