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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}",

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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