System.Collections.IEnumerable - MSDN Documentation

The IEnumerable interface is the base interface for all collection types in the .NET Framework. It provides a way to iterate over a collection, one element at a time.

Summary

The IEnumerable interface represents a generic collection that can be enumerated. It is implemented by classes such as List<T>, Dictionary<TKey, TValue>, and arrays.

Syntax

Members

Methods

Remarks

The IEnumerable interface is the foundation for iterating over collections in C#. When you use a foreach loop in C#, the compiler generates code that calls the GetEnumerator() method of the collection to obtain an enumerator, and then uses the IEnumerator interface to step through the collection's elements.

If a collection implements IEnumerable, it means that you can iterate over its elements using a foreach loop.

Requirements

Assembly

mscorlib.dll

Namespace

System.Collections

Example

The following C# code example demonstrates how to use a collection that implements IEnumerable with a foreach loop.

                using System;
                using System.Collections;
                using System.Collections.Generic;

                public class Example
                {
                    public static void Main()
                    {
                        // A List implements IEnumerable
                        List<string> fruits = new List<string>()
                        {
                            "Apple",
                            "Banana",
                            "Cherry"
                        };

                        Console.WriteLine("Fruits:");
                        // The foreach loop utilizes the IEnumerable interface
                        foreach (string fruit in fruits)
                        {
                            Console.WriteLine(fruit);
                        }
                    }
                }
            

System.Collections.IEnumerable Interface