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Which Dictionary object should you use?


Hashtable
SortedList
String Dictionary
List Dictionary
Hybrid Dictionary
NameValue Collection
Retrieved by name
Yes
Yes
Yes
Yes
Yes
Yes
Retrieved by Index
Yes
Yes
Yes
Yes
Yes
Yes
Sorted by default
No
Yes
No



Key type
Object
String
String (Strongly typed)
Object
Object
String/
Integer
Value type
Object
Object
String
Object
Object
Object
Performance



Optimised for fewer than 10 items
Uses List Dictionary for small no of item. Changes to Hashtable as list grows
Allows multiple value for a key

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