Why is Dictionary preferred over Hashtable in C#?

Question

In most programming languages, dictionaries are preferred over hashtables. What are the reasons behind that?

Answer 1

HashTable:

Key/value will be converted into an object (boxing) type while storing into the heap.

Key/value needs to be converted into the desired type while reading from the heap.

These operations are very costly. We need to avoid boxing/unboxing as much as possible.

Dictionary : Generic variant of HashTable.

No boxing/unboxing. No conversions required.