List of 20 Most common Interfaces in C#

In C#, there are several common interfaces that are widely used for different purposes. Here is a list of some of the most commonly used interfaces in C#:

1. IEnumerable: Represents a collection that can be enumerated. It is used for iterating over a collection of items.
2. IEnumerator: Provides methods for iterating over a collection. It is often used in conjunction with IEnumerable.
3. IComparable: Defines a method to compare one object with another object of the same type. Used for custom object comparisons.
4. IEquatable: Defines a method to determine whether the current object is equal to another object of the same type. Used for custom object equality comparisons.
5. IDisposable: Provides a mechanism for releasing unmanaged resources. It’s used for resource management and cleanup.
6. IList: Represents a non-generic collection of objects that can be individually accessed by index. Common implementations include List<T> and ArrayList.
7. ICollection: Defines methods to manipulate generic collections. Common implementations include List<T>.
8. IDictionary: Represents a collection of key-value pairs. Common implementations include Dictionary<TKey, TValue>.
9. INotifyPropertyChanged: Used in data binding scenarios to notify clients when a property value changes.
10. INotifyCollectionChanged: Used in data binding scenarios to notify clients when a collection changes, such as items being added or removed.
11. IQueryable: Represents a queryable data source. It’s used in LINQ (Language Integrated Query) for querying collections and databases.
12. IQueryable: A generic version of IQueryable, used for strongly-typed queries in LINQ.
13. ISerializable: Used for custom serialization of objects. Allows objects to control how they are serialized and deserialized.
14. IAsyncResult: Represents the status of an asynchronous operation.
15. IFormattable: Provides a way to format the value of an object into a string representation using a specified format.
16. ICloneable: Defines a method to create a shallow copy of an object. It’s used for creating copies of objects.
17. IConvertible: Provides methods for converting an object to different data types. It’s used for type conversion.
18. IComparable: A generic version of IComparable, used for comparing objects of a specific type.
19. IEquatable: A generic version of IEquatable, used for determining equality of objects of a specific type.
20. IAsyncEnumerable: Introduced in C# 8.0, it represents an asynchronous stream of data.