LinkedListNode(Of T) Class
Represents a node in a LinkedList(Of T). This class cannot be inherited.
Assembly: System (in System.dll)
Each element of the LinkedList(Of T) collection is a LinkedListNode(Of T). The LinkedListNode(Of T) contains a value, a reference to the LinkedList(Of T) that it belongs to, a reference to the next node, and a reference to the previous node.
The following code example creates a LinkedListNode(Of T), adds it to a LinkedList(Of T), and tracks the values of its properties as the LinkedList(Of T) changes.
Imports System Imports System.Collections.Generic Public Class GenericCollection Public Shared Sub Main() ' Create a new LinkedListNode of type String and displays its properties. Dim lln As New LinkedListNode(Of String)("orange") Console.WriteLine("After creating the node ....") DisplayProperties(lln) ' Create a new LinkedList. Dim ll As New LinkedList(Of String) ' Add the "orange" node and display its properties. ll.AddLast(lln) Console.WriteLine("After adding the node to the empty LinkedList ....") DisplayProperties(lln) ' Add nodes before and after the "orange" node and display the "orange" node's properties. ll.AddFirst("red") ll.AddLast("yellow") Console.WriteLine("After adding red and yellow ....") DisplayProperties(lln) End Sub 'Main Public Shared Sub DisplayProperties(lln As LinkedListNode(Of String)) If lln.List Is Nothing Then Console.WriteLine(" Node is not linked.") Else Console.WriteLine(" Node belongs to a linked list with {0} elements.", lln.List.Count) End If If lln.Previous Is Nothing Then Console.WriteLine(" Previous node is null.") Else Console.WriteLine(" Value of previous node: {0}", lln.Previous.Value) End If Console.WriteLine(" Value of current node: {0}", lln.Value) If lln.Next Is Nothing Then Console.WriteLine(" Next node is null.") Else Console.WriteLine(" Value of next node: {0}", lln.Next.Value) End If Console.WriteLine() End Sub 'DisplayProperties End Class 'GenericCollection 'This code produces the following output. ' 'After creating the node .... ' Node is not linked. ' Previous node is null. ' Value of current node: orange ' Next node is null. ' 'After adding the node to the empty LinkedList .... ' Node belongs to a linked list with 1 elements. ' Previous node is null. ' Value of current node: orange ' Next node is null. ' 'After adding red and yellow .... ' Node belongs to a linked list with 3 elements. ' Value of previous node: red ' Value of current node: orange ' Value of next node: yellow
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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.