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LinkedList<T> Constructor (IEnumerable<T>)

Initializes a new instance of the LinkedList<T> class that contains elements copied from the specified IEnumerable and has sufficient capacity to accommodate the number of elements copied.

Namespace:  System.Collections.Generic
Assembly:  System (in System.dll)

public LinkedList(
	IEnumerable<T> collection


Type: System.Collections.Generic.IEnumerable<T>

The IEnumerable whose elements are copied to the new LinkedList<T>.


collection is null.

LinkedList<T> accepts null as a valid Value for reference types and allows duplicate values.

If collection has no elements then the new LinkedList<T> is empty, and the First and Last properties contain null.

This constructor is an O(n) operation, where n is the number of elements in collection.

The following code example and output demonstrate the LinkedList<T>(IEnumerable<T>) constructor. The example creates an array of strings, then creates and populates a LinkedList<T> by passing the array of strings to the constructor.

This code and output are part of a larger example provided for the LinkedList<T> class.

// Create the link list.
string[] words =
    { "the", "fox", "jumped", "over", "the", "dog" };
LinkedList<string> sentence = new LinkedList<string>(words);
Display(sentence, "The linked list values:");
Console.WriteLine("sentence.Contains(\"jumped\") = {0}",

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0

.NET Compact Framework

Supported in: 3.5, 2.0

XNA Framework

Supported in: 3.0, 2.0, 1.0