Why are dictionaries preferred over hash tables in C#?

The Hashtable class represents a collection of key-value pairs organized according to the hash code of the key. It uses keys to access elements in the collection.

A dictionary is a collection of keys and values ​​in C#. Dictionary is contained in the System.Collection.Generics namespace.

Hashtable is slower than Dictionary. For strongly typed collections, Dictionary collections are faster.

Suppose we need to find a key from a Hashtable collection. This way, we can also find a key from the Dictionary collection. In this case, for the same statement, dictionary will be faster -

for HashTable

hashtable.ContainsKey("12345");

for Dictionary

dictionary.ContainsKey("12345")

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