IPAddress 類別

定義

提供網際網路通訊協定 (IP) 位址。Provides an Internet Protocol (IP) address.

public ref class IPAddress
[System.Serializable]
public class IPAddress
type IPAddress = class
Public Class IPAddress
繼承
IPAddress
屬性

範例

下列程式碼範例示範如何查詢伺服器,以取得其所支援的系列位址和 IP 位址。The following code example shows how to query a server to obtain the family addresses and the IP addresses it supports.

// This program shows how to use the IPAddress class to obtain a server 
// IP addressess and related information.
#using <System.dll>

using namespace System;
using namespace System::Net;
using namespace System::Net::Sockets;
using namespace System::Text::RegularExpressions;

/**
* The IPAddresses method obtains the selected server IP address information.
* It then displays the type of address family supported by the server and its 
* IP address in standard and byte format.
**/
void IPAddresses( String^ server )
{
   try
   {
      System::Text::ASCIIEncoding^ ASCII = gcnew System::Text::ASCIIEncoding;
      
      // Get server related information.
      IPHostEntry^ heserver = Dns::GetHostEntry( server );
      
      // Loop on the AddressList
      System::Collections::IEnumerator^ myEnum = heserver->AddressList->GetEnumerator();
      while ( myEnum->MoveNext() )
      {
         IPAddress^ curAdd = safe_cast<IPAddress^>(myEnum->Current);
         
         // Display the type of address family supported by the server. If the
         // server is IPv6-enabled this value is: InterNetworkV6. If the server
         // is also IPv4-enabled there will be an additional value of InterNetwork.
         Console::WriteLine( "AddressFamily: {0}", curAdd->AddressFamily );
         
         // Display the ScopeId property in case of IPV6 addresses.
         if ( curAdd->AddressFamily.ToString() == ProtocolFamily::InterNetworkV6.ToString() )
                  Console::WriteLine( "Scope Id: {0}", curAdd->ScopeId );

         // Display the server IP address in the standard format. In 
         // IPv4 the format will be dotted-quad notation, in IPv6 it will be
         // in in colon-hexadecimal notation.
         Console::WriteLine( "Address: {0}", curAdd );
         
         // Display the server IP address in byte format.
         Console::Write( "AddressBytes: " );
         
         array<Byte>^bytes = curAdd->GetAddressBytes();
         for ( int i = 0; i < bytes->Length; i++ )
         {
            Console::Write( bytes[ i ] );

         }

         Console::WriteLine( "\r\n" );
      }
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "[DoResolve] Exception: {0}", e );
   }

}


// This IPAddressAdditionalInfo displays additional server address information.
void IPAddressAdditionalInfo()
{
   try
   {
      // Display the flags that show if the server supports IPv4 or IPv6
      // address schemas.
      Console::WriteLine( "\r\nSupportsIPv4: {0}", Socket::SupportsIPv4 );
      Console::WriteLine( "SupportsIPv6: {0}", Socket::SupportsIPv6 );
      if ( Socket::SupportsIPv6 )
      {
         // Display the server Any address. This IP address indicates that the server 
         // should listen for client activity on all network interfaces. 
         Console::WriteLine( "\r\nIPv6Any: {0}", IPAddress::IPv6Any );

         // Display the server loopback address. 
         Console::WriteLine( "IPv6Loopback: {0}", IPAddress::IPv6Loopback );

         // Used during autoconfiguration first phase.
         Console::WriteLine( "IPv6None: {0}", IPAddress::IPv6None );
         Console::WriteLine( "IsLoopback(IPv6Loopback): {0}", IPAddress::IsLoopback( IPAddress::IPv6Loopback ) );
      }
      Console::WriteLine( "IsLoopback(Loopback): {0}", IPAddress::IsLoopback( IPAddress::Loopback ) );
   }
   catch ( Exception^ e ) 
   {
      Console::WriteLine( "[IPAddresses] Exception: {0}", e );
   }

}

int main()
{
   array<String^>^args = Environment::GetCommandLineArgs();
   String^ server = nullptr;

   // Define a regular expression to parse user's input.
   // This is a security check. It allows only
   // alphanumeric input string between 2 to 40 character long.
   Regex^ rex = gcnew Regex( "^[a-zA-Z]\\w{1,39}$" );
   if ( args->Length < 2 )
   {
      // If no server name is passed as an argument to this program, use the current 
      // server name as default.
      server = Dns::GetHostName();
      Console::WriteLine( "Using current host: {0}", server );
   }
   else
   {
      server = args[ 1 ];
      if (  !(rex->Match(server))->Success )
      {
         Console::WriteLine( "Input string format not allowed." );
         return  -1;
      }
   }

   // Get the list of the addresses associated with the requested server.
   IPAddresses( server );

   // Get additonal address information.
   IPAddressAdditionalInfo();
}

// This program shows how to use the IPAddress class to obtain a server 
// IP addressess and related information.

using System;
using System.Net;
using System.Net.Sockets;
using System.Text.RegularExpressions;

namespace Mssc.Services.ConnectionManagement
{

  class TestIPAddress 
  {

    /**
      * The IPAddresses method obtains the selected server IP address information.
      * It then displays the type of address family supported by the server and its 
      * IP address in standard and byte format.
      **/
    private static void IPAddresses(string server) 
    {
      try 
      {
        System.Text.ASCIIEncoding ASCII = new System.Text.ASCIIEncoding();
  
        // Get server related information.
        IPHostEntry heserver = Dns.GetHostEntry(server);

        // Loop on the AddressList
        foreach (IPAddress curAdd in heserver.AddressList) 
        {


          // Display the type of address family supported by the server. If the
          // server is IPv6-enabled this value is: InterNetworkV6. If the server
          // is also IPv4-enabled there will be an additional value of InterNetwork.
          Console.WriteLine("AddressFamily: " + curAdd.AddressFamily.ToString());
          
          // Display the ScopeId property in case of IPV6 addresses.
          if(curAdd.AddressFamily.ToString() == ProtocolFamily.InterNetworkV6.ToString())
            Console.WriteLine("Scope Id: " + curAdd.ScopeId.ToString());


          // Display the server IP address in the standard format. In 
          // IPv4 the format will be dotted-quad notation, in IPv6 it will be
          // in in colon-hexadecimal notation.
          Console.WriteLine("Address: " + curAdd.ToString());
        
          // Display the server IP address in byte format.
          Console.Write("AddressBytes: ");



          Byte[] bytes = curAdd.GetAddressBytes();
          for (int i = 0; i < bytes.Length; i++) 
          {
            Console.Write(bytes[i]);
          }                          

          Console.WriteLine("\r\n");

        }

      }
      catch (Exception e) 
      {
        Console.WriteLine("[DoResolve] Exception: " + e.ToString());
      }
    }

    // This IPAddressAdditionalInfo displays additional server address information.
    private static void IPAddressAdditionalInfo() 
    {
      try 
      {
        // Display the flags that show if the server supports IPv4 or IPv6
        // address schemas.
        Console.WriteLine("\r\nSupportsIPv4: " + Socket.SupportsIPv4);
        Console.WriteLine("SupportsIPv6: " + Socket.SupportsIPv6);

        if (Socket.SupportsIPv6)
        {
          // Display the server Any address. This IP address indicates that the server 
          // should listen for client activity on all network interfaces. 
          Console.WriteLine("\r\nIPv6Any: " + IPAddress.IPv6Any.ToString());

          // Display the server loopback address. 
          Console.WriteLine("IPv6Loopback: " + IPAddress.IPv6Loopback.ToString());
      
          // Used during autoconfiguration first phase.
          Console.WriteLine("IPv6None: " + IPAddress.IPv6None.ToString());
      
          Console.WriteLine("IsLoopback(IPv6Loopback): " + IPAddress.IsLoopback(IPAddress.IPv6Loopback));
        }
        Console.WriteLine("IsLoopback(Loopback): " + IPAddress.IsLoopback(IPAddress.Loopback));
      }
      catch (Exception e) 
      {
        Console.WriteLine("[IPAddresses] Exception: " + e.ToString());
      }
    }


    public static void Main(string[] args) 
    {
      string server = null;
    
      // Define a regular expression to parse user's input.
      // This is a security check. It allows only
      // alphanumeric input string between 2 to 40 character long.
      Regex rex = new Regex(@"^[a-zA-Z]\w{1,39}$");

      if (args.Length < 1)
      {
        // If no server name is passed as an argument to this program, use the current 
        // server name as default.
        server = Dns.GetHostName();
        Console.WriteLine("Using current host: " + server);
      }
      else
      {
        server = args[0];
        if (!(rex.Match(server)).Success)
        {
          Console.WriteLine("Input string format not allowed.");
          return;
        }
      }

      // Get the list of the addresses associated with the requested server.
      IPAddresses(server);
    
      // Get additonal address information.
      IPAddressAdditionalInfo();
    }

  }
}
' This program shows how to use the IPAddress class to obtain a server 
' IP addressess and related information.
Imports System.Net
Imports System.Net.Sockets
Imports System.Text.RegularExpressions

Namespace Mssc.Services.ConnectionManagement
  Module M_TestIPAddress

    Class TestIPAddress

      'The IPAddresses method obtains the selected server IP address information.
      'It then displays the type of address family supported by the server and 
      'its IP address in standard and byte format.
      Private Shared Sub IPAddresses(ByVal server As String)
        Try
          Dim ASCII As New System.Text.ASCIIEncoding()

          ' Get server related information.
          Dim heserver As IPHostEntry = Dns.Resolve(server)

          ' Loop on the AddressList
          Dim curAdd As IPAddress
          For Each curAdd In heserver.AddressList

            ' Display the type of address family supported by the server. If the
            ' server is IPv6-enabled this value is: InterNetworkV6. If the server
            ' is also IPv4-enabled there will be an additional value of InterNetwork.
            Console.WriteLine(("AddressFamily: " + curAdd.AddressFamily.ToString()))

            ' Display the ScopeId property in case of IPV6 addresses.
            If curAdd.AddressFamily.ToString() = ProtocolFamily.InterNetworkV6.ToString() Then
              Console.WriteLine(("Scope Id: " + curAdd.ScopeId.ToString()))
            End If

            ' Display the server IP address in the standard format. In 
            ' IPv4 the format will be dotted-quad notation, in IPv6 it will be
            ' in in colon-hexadecimal notation.
            Console.WriteLine(("Address: " + curAdd.ToString()))

            ' Display the server IP address in byte format.
            Console.Write("AddressBytes: ")



            Dim bytes As [Byte]() = curAdd.GetAddressBytes()
            Dim i As Integer
            For i = 0 To bytes.Length - 1
              Console.Write(bytes(i))
            Next i
            Console.WriteLine(ControlChars.Cr + ControlChars.Lf)
          Next curAdd 

        Catch e As Exception
          Console.WriteLine(("[DoResolve] Exception: " + e.ToString()))
        End Try
      End Sub


      ' This IPAddressAdditionalInfo displays additional server address information.
      Private Shared Sub IPAddressAdditionalInfo()
        Try
          ' Display the flags that show if the server supports IPv4 or IPv6
          ' address schemas.
          Console.WriteLine((ControlChars.Cr + ControlChars.Lf + "SupportsIPv4: " + Socket.SupportsIPv4.ToString()))
          Console.WriteLine(("SupportsIPv6: " + Socket.SupportsIPv6.ToString()))

          If Socket.SupportsIPv6 Then
            ' Display the server Any address. This IP address indicates that the server 
            ' should listen for client activity on all network interfaces. 
            Console.WriteLine((ControlChars.Cr + ControlChars.Lf + "IPv6Any: " + IPAddress.IPv6Any.ToString()))

            ' Display the server loopback address. 
            Console.WriteLine(("IPv6Loopback: " + IPAddress.IPv6Loopback.ToString()))

            ' Used during autoconfiguration first phase.
            Console.WriteLine(("IPv6None: " + IPAddress.IPv6None.ToString()))

            Console.WriteLine(("IsLoopback(IPv6Loopback): " + IPAddress.IsLoopback(IPAddress.IPv6Loopback).ToString()))
          End If
          Console.WriteLine(("IsLoopback(Loopback): " + IPAddress.IsLoopback(IPAddress.Loopback).ToString()))
        Catch e As Exception
          Console.WriteLine(("[IPAddresses] Exception: " + e.ToString()))
        End Try
      End Sub

      Public Shared Sub Main(ByVal args() As String)
        Dim server As String = Nothing

        ' Define a regular expression to parse user's input.
        ' This is a security check. It allows only
        ' alphanumeric input string between 2 to 40 character long.
        Dim rex As New Regex("^[a-zA-Z]\w{1,39}$")

        If args.Length < 1 Then
          ' If no server name is passed as an argument to this program, use the current 
          ' server name as default.
          server = Dns.GetHostName()
          Console.WriteLine(("Using current host: " + server))
        Else
          server = args(0)
          If Not rex.Match(server).Success Then
            Console.WriteLine("Input string format not allowed.")
            Return
          End If
        End If

        ' Get the list of the addresses associated with the requested server.
        IPAddresses(server)

        ' Get additonal address information.
        IPAddressAdditionalInfo()
      End Sub
    End Class
  End Module
End Namespace

備註

IPAddress 類別包含 IP 網路上電腦的位址。The IPAddress class contains the address of a computer on an IP network.

建構函式

IPAddress(Byte[])

使用指定為 IPAddress 陣列的位址,初始化 Byte 類別的新執行個體。Initializes a new instance of the IPAddress class with the address specified as a Byte array.

IPAddress(Byte[], Int64)

使用指定為 IPAddress 陣列且具有指定之範圍識別項的位址,初始化 Byte 類別的新執行個體。Initializes a new instance of the IPAddress class with the address specified as a Byte array and the specified scope identifier.

IPAddress(Int64)

使用指定為 IPAddress 的位址,初始化 Int64 類別的新執行個體。Initializes a new instance of the IPAddress class with the address specified as an Int64.

IPAddress(ReadOnlySpan<Byte>)
IPAddress(ReadOnlySpan<Byte>, Int64)

欄位

Any

提供指示伺服器必須在所有網路介面上接聽用戶端活動的 IP 位址。Provides an IP address that indicates that the server must listen for client activity on all network interfaces. 此欄位為唯讀。This field is read-only.

Broadcast

提供 IP 廣播位址。Provides the IP broadcast address. 此欄位為唯讀。This field is read-only.

IPv6Any

Bind(EndPoint) 方法使用 IPv6Any 欄位來表示 Socket 必須在所有網路介面上接聽用戶端活動。The Bind(EndPoint) method uses the IPv6Any field to indicate that a Socket must listen for client activity on all network interfaces.

IPv6Loopback

提供 IP 回送位址。Provides the IP loopback address. 這個屬性是唯讀的。This property is read-only.

IPv6None

提供 IP 位址,表示不可使用網路介面。Provides an IP address that indicates that no network interface should be used. 這個屬性是唯讀的。This property is read-only.

Loopback

提供 IP 回送位址。Provides the IP loopback address. 此欄位為唯讀。This field is read-only.

None

提供 IP 位址,表示不可使用網路介面。Provides an IP address that indicates that no network interface should be used. 此欄位為唯讀。This field is read-only.

屬性

Address

網際網路通訊協定 (IP) 位址。An Internet Protocol (IP) address.

AddressFamily

取得 IP 位址的位址家族。Gets the address family of the IP address.

IsIPv4MappedToIPv6

取得 IP 位址是否為對應 IPv4 的 IPv6 位址。Gets whether the IP address is an IPv4-mapped IPv6 address.

IsIPv6LinkLocal

取得位址是否為 IPv6 連結本機位址的資訊。Gets whether the address is an IPv6 link local address.

IsIPv6Multicast

取得位址是否為 IPv6 多點傳送全域位址的資訊。Gets whether the address is an IPv6 multicast global address.

IsIPv6SiteLocal

取得位址是否為 IPv6 站台本機位址的資訊。Gets whether the address is an IPv6 site local address.

IsIPv6Teredo

取得值,這個值指出位址是否為 IPv6 Teredo 位址。Gets whether the address is an IPv6 Teredo address.

ScopeId

取得或設定 IPv6 位址範圍識別項。Gets or sets the IPv6 address scope identifier.

方法

Equals(Object)

比較兩個 IP 位址。Compares two IP addresses.

GetAddressBytes()

提供做為位元組陣列之 IPAddress 的複本。Provides a copy of the IPAddress as an array of bytes.

GetHashCode()

傳回 IP 位址的雜湊值 (Hash Value)。Returns a hash value for an IP address.

GetType()

取得目前執行個體的 TypeGets the Type of the current instance.

(繼承來源 Object)
HostToNetworkOrder(Int16)

將短整數 (Short) 值從主機位元組順序轉換為網路位元組順序。Converts a short value from host byte order to network byte order.

HostToNetworkOrder(Int32)

將整數值從主機位元組順序轉換為網路位元組順序。Converts an integer value from host byte order to network byte order.

HostToNetworkOrder(Int64)

將長整數 (Long) 值從主機位元組順序轉換為網路位元組順序。Converts a long value from host byte order to network byte order.

IsLoopback(IPAddress)

指示指定的 IP 位址是否為回送位址。Indicates whether the specified IP address is the loopback address.

MapToIPv4()

IPAddress 物件對應至 IPv4 位址。Maps the IPAddress object to an IPv4 address.

MapToIPv6()

IPAddress 物件對應至 IPv6 位址。Maps the IPAddress object to an IPv6 address.

MemberwiseClone()

建立目前 Object 的淺層複製。Creates a shallow copy of the current Object.

(繼承來源 Object)
NetworkToHostOrder(Int16)

將短整數值從網路位元組順序轉換為主機位元組順序。Converts a short value from network byte order to host byte order.

NetworkToHostOrder(Int32)

將整數值從網路位元組順序轉換為主機位元組順序。Converts an integer value from network byte order to host byte order.

NetworkToHostOrder(Int64)

將長整數值從網路位元組順序轉換為主機位元組順序。Converts a long value from network byte order to host byte order.

Parse(ReadOnlySpan<Char>)
Parse(String)

將 IP 位址字串轉換為 IPAddress 執行個體。Converts an IP address string to an IPAddress instance.

ToString()

將網際網路位址轉換為其標準標記法。Converts an Internet address to its standard notation.

TryFormat(Span<Char>, Int32)
TryParse(ReadOnlySpan<Char>, IPAddress)
TryParse(String, IPAddress)

判斷字串是否為有效的 IP 位址。Determines whether a string is a valid IP address.

TryWriteBytes(Span<Byte>, Int32)

適用於