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The Dictionary<TKey,TValue> generic class provides a mapping from a set of keys to a set of values. Each addition to the dictionary consists of a value and its associated key. Retrieving a value by using its key is very fast, close to O (1), because the Dictionary<TKey,TValue> class is implemented as a hash table.
It's possible to find the element in Dictionary collection by using ContainsKey or TryGetValue as follows:
15 mar 2024 · Learn how to initialize a dictionary in C#, using either the Add method or an index initializer. This example shows both options.
15 wrz 2021 · In this article. The System.Collections.Hashtable class, and the System.Collections.Generic.Dictionary<TKey,TValue> and System.Collections.Concurrent.ConcurrentDictionary<TKey,TValue> generic classes, implement the System.Collections.IDictionary interface.
Dictionary in C# is the generic collection type in the System.Collection.Generics namespace that contains Keys and Values.
2 wrz 2024 · In C#, Dictionary is a generic collection which is generally used to store key/value pairs. The working of Dictionary is quite similar to the non-generic hashtable. The advantage of Dictionary is, it is generic type. Dictionary is defined under System.Collections.Generic namespace.
A Dictionary class is a data structure that represents a collection of keys and values pair of data. At the end of this article, you will understand the following pointers in detail. What is Dictionary in C#? How to create a Generic Dictionary Collection in C#? How to Add Elements into a Generic Dictionary<TKey, TValue> Collection in C#?
