LinkedListNode<T> 類別

定義

命名空間:

System.Collections.Generic

組件:

System.Collections.dll

來源:

LinkedList.cs

表示 LinkedList<T> 中的節點。 此類別無法獲得繼承。

generic <typename T>
public ref class LinkedListNode sealed

public sealed class LinkedListNode<T>

type LinkedListNode<'T> = class

Public NotInheritable Class LinkedListNode(Of T)

類型參數

T

指定連結清單的項目類型。

繼承

Object

LinkedListNode<T>

範例

下列程式代碼範例會 LinkedListNode<T>建立 、將它新增至 LinkedList<T>，並在變更時 LinkedList<T> 追蹤其屬性值。

#using <System.dll>

using namespace System;
using namespace System::Collections::Generic;

public ref class GenericCollection  {

public:
   static void Main()  {

      // Create a new LinkedListNode of type String and displays its properties.
      LinkedListNode<String^>^ lln = gcnew LinkedListNode<String^>( "orange" );
      Console::WriteLine( "After creating the node ...." );
      DisplayProperties( lln );

      // Create a new LinkedList.
      LinkedList<String^>^ ll = gcnew LinkedList<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 );

   }

   static void DisplayProperties( LinkedListNode<String^>^ lln )  {
      if ( lln->List == nullptr )
         Console::WriteLine( "   Node is not linked." );
      else
         Console::WriteLine( "   Node belongs to a linked list with {0} elements.", lln->List->Count );

      if ( lln->Previous == nullptr )
         Console::WriteLine( "   Previous node is null." );
      else
         Console::WriteLine( "   Value of previous node: {0}", lln->Previous->Value );

      Console::WriteLine( "   Value of current node:  {0}", lln->Value );

      if ( lln->Next == nullptr )
         Console::WriteLine( "   Next node is null." );
      else
         Console::WriteLine( "   Value of next node:     {0}", lln->Next->Value );

      Console::WriteLine();
   }

};

int main()
{
    GenericCollection::Main();
}

/*

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

*/

using System;
using System.Collections.Generic;

public class GenericCollection  {

   public static void Main()  {

      // Create a new LinkedListNode of type String and displays its properties.
      LinkedListNode<String> lln = new LinkedListNode<String>( "orange" );
      Console.WriteLine( "After creating the node ...." );
      DisplayProperties( lln );

      // Create a new LinkedList.
      LinkedList<String> ll = new LinkedList<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 );
   }

   public static void DisplayProperties( LinkedListNode<String> lln )  {
      if ( lln.List == null )
         Console.WriteLine( "   Node is not linked." );
      else
         Console.WriteLine( "   Node belongs to a linked list with {0} elements.", lln.List.Count );

      if ( lln.Previous == null )
         Console.WriteLine( "   Previous node is null." );
      else
         Console.WriteLine( "   Value of previous node: {0}", lln.Previous.Value );

      Console.WriteLine( "   Value of current node:  {0}", lln.Value );

      if ( lln.Next == null )
         Console.WriteLine( "   Next node is null." );
      else
         Console.WriteLine( "   Value of next node:     {0}", lln.Next.Value );

      Console.WriteLine();
   }
}


/*

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

*/

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

    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

End Class


'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

備註

集合的每個 LinkedList<T> 元素都是 LinkedListNode<T>。 LinkedListNode<T>包含值、其所屬的LinkedList<T>參考、下一個節點的參考，以及前一個節點的參考。

建構函式

LinkedListNode<T>(T)

初始化 LinkedListNode<T> 類別 (含有指定的值) 的新執行個體。

屬性

List	取得 LinkedList<T> 所屬的 LinkedListNode<T>。
Next	取得 LinkedList<T> 中的下一個節點。
Previous	取得 LinkedList<T> 中的前一個節點。
Value	取得包含於節點中的值。
ValueRef	取得節點所保留值的參考。

方法

Equals(Object)	判斷指定的物件是否等於目前的物件。 (繼承來源 Object)
GetHashCode()	做為預設雜湊函式。 (繼承來源 Object)
GetType()	取得目前執行個體的 Type。 (繼承來源 Object)
MemberwiseClone()	建立目前 Object 的淺層複製。 (繼承來源 Object)
ToString()	傳回代表目前物件的字串。 (繼承來源 Object)