Differences between Hashtable and Dictionary

Question

What ae the difference between Hashtable and Dictionary

Answer 1

Dictionary:

It returns error if we try to find a key which does not exist.
It is faster than a Hashtable because there is no boxing and unboxing.
Only public static members are thread safe.
Dictionary is a generic type which means we can use it with any data type.
Hashtable:

It returns null if we try to find a key which does not exist.
It is slower than dictionary because it requires boxing and unboxing.
All the members in a Hashtable are thread safe,
Hashtable is not a generic type,