Add | Adds a key and item pair to a Dictionary object. | 
  Exists | Returns true if a specified key exists in the Dictionary object, false if it does not. | 
  Items | Returns an array containing all the items in a Dictionary object. | 
  Keys | Returns an array containing all existing keys in a Dictionary object. | 
  Remove | Removes a key, item pair from a Dictionary object. | 
  RemoveAll | The RemoveAll method removes all key, item pairs from a Dictionary object. |