Dns.GetHostByAddress 方法

定義

命名空間:

System.Net

組件:

System.Net.NameResolution.dll

取得 IP 位址的 DNS 主機資訊。 這些方法現在已經過時。

多載

GetHostByAddress(IPAddress)	已淘汰. 從指定的 IPHostEntry 建立 IPAddress 執行個體。
GetHostByAddress(String)	已淘汰. 從點分隔的 IP 位址建立 IPHostEntry 執行個體。

GetHostByAddress(IPAddress)

來源:

Dns.cs

警告

GetHostByAddress has been deprecated. Use GetHostEntry instead.

從指定的 IPHostEntry 建立 IPAddress 執行個體。

public:
 static System::Net::IPHostEntry ^ GetHostByAddress(System::Net::IPAddress ^ address);

[System.Obsolete("GetHostByAddress has been deprecated. Use GetHostEntry instead.")]
public static System.Net.IPHostEntry GetHostByAddress (System.Net.IPAddress address);

[<System.Obsolete("GetHostByAddress has been deprecated. Use GetHostEntry instead.")>]
static member GetHostByAddress : System.Net.IPAddress -> System.Net.IPHostEntry

Public Shared Function GetHostByAddress (address As IPAddress) As IPHostEntry

參數

address

IPAddress

IPAddress。

傳回

IPHostEntry

IPHostEntry 執行個體。

屬性

ObsoleteAttribute

例外狀況

ArgumentNullException

address 為 null。

SocketException

當解析 address 時，發生錯誤。

範例

下列範例會 IPHostEntry 從 IPAddress建立 。

try
{
   IPAddress^ hostIPAddress = IPAddress::Parse( IpAddressString );
   IPHostEntry^ hostInfo = Dns::GetHostByAddress( hostIPAddress );
   
   // Get the IP address list that resolves to the host names contained in
   // the Alias property.
   array<IPAddress^>^address = hostInfo->AddressList;
   
   // Get the alias names of the addresses in the IP address list.
   array<String^>^alias = hostInfo->Aliases;
   Console::WriteLine( "Host name : {0}", hostInfo->HostName );
   Console::WriteLine( "\nAliases :" );
   for ( int index = 0; index < alias->Length; index++ )
      Console::WriteLine( alias[ index ] );
   Console::WriteLine( "\nIP address list : " );
   for ( int index = 0; index < address->Length; index++ )
      Console::WriteLine( address[ index ] );
}
catch ( SocketException^ e ) 
{
   Console::WriteLine( "SocketException caught!!!" );
   Console::WriteLine( "Source : {0}", e->Source );
   Console::WriteLine( "Message : {0}", e->Message );
}
catch ( FormatException^ e ) 
{
   Console::WriteLine( "FormatException caught!!!" );
   Console::WriteLine( "Source : {0}", e->Source );
   Console::WriteLine( "Message : {0}", e->Message );
}
catch ( ArgumentNullException^ e ) 
{
   Console::WriteLine( "ArgumentNullException caught!!!" );
   Console::WriteLine( "Source : {0}", e->Source );
   Console::WriteLine( "Message : {0}", e->Message );
}
catch ( Exception^ e ) 
{
   Console::WriteLine( "Exception caught!!!" );
   Console::WriteLine( "Source : {0}", e->Source );
   Console::WriteLine( "Message : {0}", e->Message );
}

 try
 {
    IPAddress hostIPAddress = IPAddress.Parse(IpAddressString);
    IPHostEntry hostInfo = Dns.GetHostByAddress(hostIPAddress);
    // Get the IP address list that resolves to the host names contained in
    // the Alias property.
    IPAddress[] address = hostInfo.AddressList;
    // Get the alias names of the addresses in the IP address list.
    String[] alias = hostInfo.Aliases;

    Console.WriteLine("Host name : " + hostInfo.HostName);
    Console.WriteLine("\nAliases :");
    for(int index=0; index < alias.Length; index++) {
      Console.WriteLine(alias[index]);
    }
    Console.WriteLine("\nIP address list : ");
    for(int index=0; index < address.Length; index++) {
       Console.WriteLine(address[index]);
    }
 }
 catch(SocketException e)
 {
Console.WriteLine("SocketException caught!!!");
    Console.WriteLine("Source : " + e.Source);
    Console.WriteLine("Message : " + e.Message);
 }
 catch(FormatException e)
 {
Console.WriteLine("FormatException caught!!!");
    Console.WriteLine("Source : " + e.Source);
    Console.WriteLine("Message : " + e.Message);
 }
 catch(ArgumentNullException e)
 {
Console.WriteLine("ArgumentNullException caught!!!");
    Console.WriteLine("Source : " + e.Source);
    Console.WriteLine("Message : " + e.Message);
 }
 catch(Exception e)
 {
     Console.WriteLine("Exception caught!!!");
     Console.WriteLine("Source : " + e.Source);
     Console.WriteLine("Message : " + e.Message);
 }

Public Sub DisplayHostAddress(IpAddressString As [String])
    Try
        Dim hostIPAddress As IPAddress = IPAddress.Parse(IpAddressString)
        
        ' Call the GetHostByAddress(IPAddress) method, passing an IPAddress object as an argument 
        ' to obtain an IPHostEntry instance, containing address information for the specified host.
        
        Dim hostInfo As IPHostEntry = Dns.GetHostByAddress(hostIPAddress)
        ' Get the IP address list that resolves to the host names contained in 
        ' the Alias property.
        Dim address As IPAddress() = hostInfo.AddressList
        ' Get the alias names of the above addresses in the IP address list.
        Dim [alias] As [String]() = hostInfo.Aliases
        
        Console.WriteLine(("Host name : " + hostInfo.HostName))
        Console.WriteLine(ControlChars.Cr + "Aliases :")
        Dim index As Integer
        For index = 0 To [alias].Length - 1
            Console.WriteLine([alias](index))
        Next index
        Console.WriteLine(ControlChars.Cr + "IP address list : ")

        For index = 0 To address.Length - 1
            Console.WriteLine(address(index))
        Next index
        
    Catch e As SocketException
        Console.WriteLine("SocketException caught!!!")
        Console.WriteLine(("Source : " + e.Source))
        Console.WriteLine(("Message : " + e.Message))
        
    Catch e As FormatException
        Console.WriteLine("FormatException caught!!!")
        Console.WriteLine(("Source : " + e.Source))
        Console.WriteLine(("Message : " + e.Message))
        
    Catch e As ArgumentNullException
        Console.WriteLine("ArgumentNullException caught!!!")
        Console.WriteLine(("Source : " + e.Source))
        Console.WriteLine(("Message : " + e.Message))
        
    Catch e As Exception
        Console.WriteLine("Exception caught!!!")
        Console.WriteLine(("Source : " + e.Source))
        Console.WriteLine(("Message : " + e.Message))
    End Try
End Sub

備註

注意

當您在應用程式中啟用網路追蹤時，此成員會發出追蹤資訊。 如需詳細資訊，請參閱 .NET Framework 中的網路追蹤。

GetHostByAddress(String)

來源:

Dns.cs

警告

GetHostByAddress has been deprecated. Use GetHostEntry instead.

從點分隔的 IP 位址建立 IPHostEntry 執行個體。

public:
 static System::Net::IPHostEntry ^ GetHostByAddress(System::String ^ address);

[System.Obsolete("GetHostByAddress has been deprecated. Use GetHostEntry instead.")]
public static System.Net.IPHostEntry GetHostByAddress (string address);

[<System.Obsolete("GetHostByAddress has been deprecated. Use GetHostEntry instead.")>]
static member GetHostByAddress : string -> System.Net.IPHostEntry

Public Shared Function GetHostByAddress (address As String) As IPHostEntry

參數

address

String

IP 位址。

傳回

IPHostEntry

IPHostEntry 執行個體。

屬性

ObsoleteAttribute

例外狀況

ArgumentNullException

address 為 null。

SocketException

當解析 address 時，發生錯誤。

FormatException

address 不是有效的 IP 位址。

備註

注意

當您在應用程式中啟用網路追蹤時，此成員會發出追蹤資訊。 如需詳細資訊，請參閱 .NET Framework 中的網路追蹤。