Export (0) Print
Expand All

LinkedList<T> Constructor

Initializes a new instance of the LinkedList<T> class that is empty.

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

public LinkedList()

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

If the LinkedList<T> is empty, the First and Last properties contain null.

This constructor is an O(1) operation.

The following code example creates and initializes a LinkedList<T> of type String, adds several nodes, and then displays its contents.

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

public class GenericCollection  
{
   public static void Main()  
   {
      // Create and initialize a new LinkedList.
      LinkedList<String> ll = new LinkedList<String>();
      ll.AddLast( "red" );
      ll.AddLast( "orange" );
      ll.AddLast( "yellow" );
      ll.AddLast( "orange" );

      // Display the contents of the LinkedList. 
      if ( ll.Count > 0 )  
      {
         Console.WriteLine( "The item in the list is {0}.", ll.First.Value );
         Console.WriteLine( "The item in the list is {0}.", ll.Last.Value );

         Console.WriteLine( "The LinkedList contains:" );
         foreach ( String s in ll )
            Console.WriteLine( "   {0}", s);
      }
      else  
      {
         Console.WriteLine("The LinkedList is empty.");
      }
   }
}

/* This code produces the following output.

The first item in the list is red.
The last item in the list is orange.
The LinkedList contains:
   red
   orange
   yellow
   orange
*/

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 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

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone 8, Silverlight 8.1

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

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

Show:
© 2014 Microsoft