𝐃𝐢𝐜𝐭𝐢𝐨𝐧𝐚𝐫𝐲 𝐯𝐬 𝐇𝐚𝐬𝐡𝐭𝐚𝐛𝐥𝐞 𝐢𝐧 𝐂#?.

Dictionaries and Hashtables are both data structures commonly used in C# to store and retrieve data, but they have some differences in terms of implementation and behavior.

Dictionary:

• The Dictionary<TKey, TValue> class in C# represents a generic collection of key-value pairs.

• It uses a hash table internally to store the key-value pairs.

• Keys must be unique within the dictionary.

• Provides fast lookup and retrieval of values based on keys.

• Does not guarantee the order of the elements.

• Supports operations like adding, removing, updating, and searching for elements based on keys.

• Provides methods like Add, Remove, ContainsKey, TryGetValue, etc.

Example usage of Dictionary in C#:

Hashtable:

• The Hashtable class in C# is a non-generic collection that stores key-value pairs.

• It also uses a hash table internally for efficient storage and retrieval.

• Keys must be unique within the hashtable.

• Provides fast lookup and retrieval of values based on keys.

• Does not guarantee the order of the elements.

• Supports operations like adding, removing, updating, and searching for elements based on keys.

• Provides methods like Add, Remove, ContainsKey, TryGetValue, etc.

Example usage of Hashtable in C#:

Sure! Here's a side-by-side comparison of the differences between Dictionary and Hashtable in terms of their implementation and behavior:

In summary, dictionaries and hashtables in C# have similar functionality and are used to store key-value pairs. However, dictionaries are part of the generic collections in C# and provide type safety, whereas hashtables are non-generic and store objects. It is generally recommended to use dictionaries for type-safe collections when possible.