LinkedList<T> 构造函数

定义

命名空间:

System.Collections.Generic

程序集:

System.Collections.dll

初始化 LinkedList<T> 类的新实例。

重载

LinkedList<T>()	初始化为空的 LinkedList<T> 类的新实例。
LinkedList<T>(IEnumerable<T>)	初始化 LinkedList<T> 类的新实例，该实例包含从指定的 IEnumerable 中复制的元素并且其容量足以容纳所复制的元素数。
LinkedList<T>(SerializationInfo, StreamingContext)	已过时. 初始化 LinkedList<T> 类的新实例，该实例可使用指定的 SerializationInfo 和 StreamingContext 进行序列化。

LinkedList<T>()

Source:

LinkedList.cs

初始化为空的 LinkedList<T> 类的新实例。

public:
 LinkedList();

public LinkedList ();

Public Sub New ()

示例

下面的代码示例创建并初始化 LinkedList<T> 类型的 String，添加多个节点，然后显示其内容。

#using <System.dll>

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

void main()
{
    // Create and initialize a new LinkedList.
    LinkedList< String^ > ^ ll = gcnew LinkedList< String^ >;
    ll->AddLast(L"red");
    ll->AddLast(L"orange");
    ll->AddLast(L"yellow");
    ll->AddLast(L"orange");

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

        for each (String^ s in ll)
        {
            Console::WriteLine(L"   {0}", s);
        }
    }
    else
    {
        Console::WriteLine(L"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
*/

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 first item in the list is {0}.", ll.First.Value);
            Console.WriteLine("The last 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
*/

Imports System.Collections
Imports System.Collections.Generic

Public Class GenericCollection

    Public Shared Sub Main()

        ' Create and initialize a new LinkedList.
        Dim ll As New LinkedList(Of String)()
        ll.AddLast("red")
        ll.AddLast("orange")
        ll.AddLast("yellow")
        ll.AddLast("orange")

        ' Display the contents of the LinkedList.
        If ll.Count > 0 Then
            Console.WriteLine("The first item in the list is {0}.", ll.First.Value)
            Console.WriteLine("The last item in the list is {0}.", ll.Last.Value)

            Console.WriteLine("The LinkedList contains:")
            For Each s As String In  ll
                Console.WriteLine("   {0}", s)
            Next s 
        Else
            Console.WriteLine("The LinkedList is empty.")
        End If

    End Sub 

End Class

'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

注解

LinkedList<T> 接受 null 作为对引用类型有效的 Value ，并允许重复值。

LinkedList<T>如果 为空，则 First 和 Last 属性包含 null。

此构造函数是 O (1) 操作。

LinkedList<T>(IEnumerable<T>)

Source:

LinkedList.cs

初始化 LinkedList<T> 类的新实例，该实例包含从指定的 IEnumerable 中复制的元素并且其容量足以容纳所复制的元素数。

public:
 LinkedList(System::Collections::Generic::IEnumerable<T> ^ collection);

public LinkedList (System.Collections.Generic.IEnumerable<T> collection);

new System.Collections.Generic.LinkedList<'T> : seq<'T> -> System.Collections.Generic.LinkedList<'T>

Public Sub New (collection As IEnumerable(Of T))

参数

collection

IEnumerable<T>

IEnumerable，它的元素被复制到新 LinkedList<T>。

例外

ArgumentNullException

collection 为 null。

示例

有关包含此构造函数的示例，请参阅 LinkedList<T> 类。

注解

LinkedList<T> 接受 null 作为对引用类型有效的 Value ，并允许重复值。

如果没有 collection 元素，则 new LinkedList<T> 为空，并且 First 和 Last 属性包含 null。

此构造函数是 O (n) 操作，其中 n 是 中的 collection元素数。

LinkedList<T>(SerializationInfo, StreamingContext)

Source:

LinkedList.cs

注意

This API supports obsolete formatter-based serialization. It should not be called or extended by application code.

初始化 LinkedList<T> 类的新实例，该实例可使用指定的 SerializationInfo 和 StreamingContext 进行序列化。

protected:
 LinkedList(System::Runtime::Serialization::SerializationInfo ^ info, System::Runtime::Serialization::StreamingContext context);

[System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")]
protected LinkedList (System.Runtime.Serialization.SerializationInfo info, System.Runtime.Serialization.StreamingContext context);

[<System.Obsolete("This API supports obsolete formatter-based serialization. It should not be called or extended by application code.", DiagnosticId="SYSLIB0051", UrlFormat="https://aka.ms/dotnet-warnings/{0}")>]
new System.Collections.Generic.LinkedList<'T> : System.Runtime.Serialization.SerializationInfo * System.Runtime.Serialization.StreamingContext -> System.Collections.Generic.LinkedList<'T>

Protected Sub New (info As SerializationInfo, context As StreamingContext)

参数

info

SerializationInfo

一个 SerializationInfo 对象包含序列化 LinkedList<T> 所需的信息。

context

StreamingContext

一个 StreamingContext 对象包含与LinkedList<T> 关联的序列化流的源和目标。

属性

ObsoleteAttribute

注解

LinkedList<T> 接受 null 作为对引用类型有效的 Value ，并允许重复值。

LinkedList<T>如果 为空，则 First 和 Last 属性包含 null。

此构造函数是 O (n) 操作。

另请参阅

• System.Runtime.Serialization