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LinkedList.First Property

Gets the first node of the LinkedList.

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

public LinkedListNode<T> First { get; }
/** @property */
public LinkedListNode<T> get_First ()

public function get First () : LinkedListNode<T>

Not applicable.

Property Value

The first LinkedListNode of the LinkedList.

LinkedList accepts a null reference (Nothing in Visual Basic) as a valid Value for reference types and allows duplicate values.

If the LinkedList is empty, the First and Last properties contain a null reference (Nothing in Visual Basic).

Retrieving the value of this property is an O(1) operation.

The following code example and output demonstrate the First property. The code example inserts a node at the beginning of a linked list of nodes containing strings, uses the First property to mark the first element, then removes the element and adds it to the end of the list.

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

// Move the first node to be the last node.
LinkedListNode<string> mark1 = sentence.First;
sentence.RemoveFirst();
sentence.AddLast(mark1);

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

XNA Framework

Supported in: 1.0

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