Difference Between Array and ArrayList in C# .NET

Publié le: 15 janvier 2025
sur la chaîne: SKLEARNING

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Array:

Fixed Size: The size of an array is fixed and cannot be dynamically increased or decreased.
Namespace: Arrays belong to the System.Array namespace.
Type Restriction: Arrays can store only one specific datatype (e.g., int, string, char).
Performance: Insertion and deletion operations are faster in arrays.
Strongly Typed: Arrays are strongly typed, meaning they can store elements of only a specific type.
Null Acceptance: Arrays cannot accept null values by default (depending on the type).
ArrayList:

Dynamic Size: The size of an ArrayList can dynamically increase or decrease based on the number of elements.
Namespace: ArrayLists belong to the System.Collections namespace.
Type Flexibility: ArrayLists can store different datatypes in the same list.
Performance: Insertion and deletion operations in an ArrayList are slower compared to arrays due to dynamic resizing and boxing/unboxing.
Not Strongly Typed: ArrayLists are not strongly typed, so they can store elements of mixed types.
Null Acceptance: ArrayLists can accept null values.

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