IPAddress Classe

Definizione

Fornisce un indirizzo IP (Internet Protocol).Provides an Internet Protocol (IP) address.

public ref class IPAddress
public class IPAddress
[System.Serializable]
public class IPAddress
type IPAddress = class
[<System.Serializable>]
type IPAddress = class
Public Class IPAddress
Ereditarietà
IPAddress
Attributi

Esempio

Nell'esempio di codice seguente viene illustrato come eseguire una query su un server per ottenere gli indirizzi delle famiglie e gli indirizzi IP supportati.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 additional 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 additional 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 additional address information.
        IPAddressAdditionalInfo()
      End Sub
    End Class
  End Module
End Namespace

Commenti

La IPAddress classe contiene l'indirizzo di un computer in una rete IP.The IPAddress class contains the address of a computer on an IP network.

Costruttori

IPAddress(Byte[])

Inizializza una nuova istanza della classe IPAddress con l'indirizzo specificato come matrice Byte.Initializes a new instance of the IPAddress class with the address specified as a Byte array.

IPAddress(Byte[], Int64)

Inizializza una nuova istanza della classe IPAddress con l'indirizzo specificato come matrice Byte e l'identificatore di ambito specificato.Initializes a new instance of the IPAddress class with the address specified as a Byte array and the specified scope identifier.

IPAddress(Int64)

Inizializza una nuova istanza della classe IPAddress con l'indirizzo specificato struttura Int64.Initializes a new instance of the IPAddress class with the address specified as an Int64.

IPAddress(ReadOnlySpan<Byte>)

Inizializza una nuova istanza della classe IPAddress con l'indirizzo specificato come intervallo di byte.Initializes a new instance of the IPAddress class with the address specified as a byte span.

IPAddress(ReadOnlySpan<Byte>, Int64)

Inizializza una nuova istanza della classe IPAddress con l'indirizzo specificato come intervallo di byte e l'identificatore di ambito specificato.Initializes a new instance of the IPAddress class with the address specified as a byte span and the specified scope identifier.

Campi

Any

Fornisce un indirizzo IP che indica che il server deve attendere l'attività dei client su tutte le interfacce di rete.Provides an IP address that indicates that the server must listen for client activity on all network interfaces. Questo campo è di sola lettura.This field is read-only.

Broadcast

Fornisce l'indirizzo di broadcast IP.Provides the IP broadcast address. Questo campo è di sola lettura.This field is read-only.

IPv6Any

Il metodo Bind(EndPoint) utilizza il campo IPv6Any per indicare che una classe Socket deve attendere l'attività dei client su tutte le interfacce di rete.The Bind(EndPoint) method uses the IPv6Any field to indicate that a Socket must listen for client activity on all network interfaces.

IPv6Loopback

Fornisce l'indirizzo di loopback IP.Provides the IP loopback address. Questa proprietà è di sola lettura.This property is read-only.

IPv6None

Fornisce un indirizzo IP che indica che non deve essere utilizzata alcuna interfaccia di rete.Provides an IP address that indicates that no network interface should be used. Questa proprietà è di sola lettura.This property is read-only.

Loopback

Fornisce l'indirizzo di loopback IP.Provides the IP loopback address. Questo campo è di sola lettura.This field is read-only.

None

Fornisce un indirizzo IP che indica che non deve essere utilizzata alcuna interfaccia di rete.Provides an IP address that indicates that no network interface should be used. Questo campo è di sola lettura.This field is read-only.

Proprietà

Address
Obsoleta.
Obsoleta.
Obsoleta.

Indirizzo IP (Internet Protocol).An Internet Protocol (IP) address.

AddressFamily

Ottiene la famiglia di indirizzi dell'indirizzo IP.Gets the address family of the IP address.

IsIPv4MappedToIPv6

Ottiene se l'indirizzo IP è di tipo IPv6 mappato IPv4.Gets whether the IP address is an IPv4-mapped IPv6 address.

IsIPv6LinkLocal

Ottiene se l'indirizzo è di tipo link-local IPv6.Gets whether the address is an IPv6 link local address.

IsIPv6Multicast

Ottiene se l'indirizzo è di tipo multicast globale IPv6.Gets whether the address is an IPv6 multicast global address.

IsIPv6SiteLocal

Ottiene se l'indirizzo è di tipo site-local IPv6.Gets whether the address is an IPv6 site local address.

IsIPv6Teredo

Ottiene un valore che indica se l'indirizzo è di tipo Teredo IPv6.Gets whether the address is an IPv6 Teredo address.

ScopeId

Ottiene o imposta l'identificatore di ambito dell'indirizzo IPv6.Gets or sets the IPv6 address scope identifier.

Metodi

Equals(Object)

Confronta due indirizzi IP.Compares two IP addresses.

GetAddressBytes()

Fornisce una copia della classe IPAddress come una matrice di byte.Provides a copy of the IPAddress as an array of bytes.

GetHashCode()

Restituisce un valore hash per un indirizzo IP.Returns a hash value for an IP address.

GetType()

Ottiene l'oggetto Type dell'istanza corrente.Gets the Type of the current instance.

(Ereditato da Object)
HostToNetworkOrder(Int16)

Converte un valore short dall'ordine dei byte dell'host a quello della rete.Converts a short value from host byte order to network byte order.

HostToNetworkOrder(Int32)

Converte un valore intero dall'ordine dei byte dell'host a quello della rete.Converts an integer value from host byte order to network byte order.

HostToNetworkOrder(Int64)

Converte un valore long dall'ordine dei byte dell'host a quello della rete.Converts a long value from host byte order to network byte order.

IsLoopback(IPAddress)

Indica se l'indirizzo IP specificato è quello di loopback.Indicates whether the specified IP address is the loopback address.

MapToIPv4()

Esegue il mapping dell'oggetto IPAddress a un indirizzo IPv4.Maps the IPAddress object to an IPv4 address.

MapToIPv6()

Esegue il mapping dell'oggetto IPAddress a un indirizzo IPv6.Maps the IPAddress object to an IPv6 address.

MemberwiseClone()

Crea una copia superficiale dell'oggetto Object corrente.Creates a shallow copy of the current Object.

(Ereditato da Object)
NetworkToHostOrder(Int16)

Converte un valore short dall'ordine dei byte della rete a quello dell'host.Converts a short value from network byte order to host byte order.

NetworkToHostOrder(Int32)

Converte un valore intero dall'ordine dei byte della rete a quello dell'host.Converts an integer value from network byte order to host byte order.

NetworkToHostOrder(Int64)

Converte un valore long dall'ordine dei byte della rete a quello dell'host.Converts a long value from network byte order to host byte order.

Parse(ReadOnlySpan<Char>)

Converte un indirizzo IP rappresentato come intervallo di caratteri in un'istanza di IPAddress.Converts an IP address represented as a character span to an IPAddress instance.

Parse(String)

Converte una stringa di indirizzi IP in un'istanza di IPAddress.Converts an IP address string to an IPAddress instance.

ToString()

Converte un indirizzo Internet nella relativa notazione standard.Converts an Internet address to its standard notation.

TryFormat(Span<Char>, Int32)

Tenta di formattare l'indirizzo IP corrente nell'intervallo specificato.Tries to format the current IP address into the provided span.

TryParse(ReadOnlySpan<Char>, IPAddress)

Determina se l'intervallo di byte specificato rappresenta un indirizzo IP valido.Determines whether the specified byte span represents a valid IP address.

TryParse(String, IPAddress)

Determina se una stringa è un indirizzo IP valido.Determines whether a string is a valid IP address.

TryWriteBytes(Span<Byte>, Int32)

Tenta di scrivere l'indirizzo IP corrente in un intervallo di byte.Tries to write the current IP address into a span of bytes.

Si applica a