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Dns::GetHostByAddress Method (IPAddress)

NOTE: This API is now obsolete.

Creates an IPHostEntry instance from the specified IPAddress.

Namespace:  System.Net
Assembly:  System (in System.dll)

[ObsoleteAttribute(L"GetHostByAddress is obsoleted for this type, please use GetHostEntry instead. http://go.microsoft.com/fwlink/?linkid=14202")]
public:
static IPHostEntry^ GetHostByAddress(
	IPAddress^ address
)

Parameters

address
Type: System.Net::IPAddress

An IPAddress.

ExceptionCondition
ArgumentNullException

address is nullptr.

SocketException

An error is encountered when resolving address.

NoteNote:

This member emits trace information when you enable network tracing in your application. For more information, see Network Tracing.

The following example creates a IPHostEntry from an IPAddress.

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(S"Host name : {0}", hostInfo->HostName);
   Console::WriteLine(S"\nAliases :");
   for (int index=0; index < alias->Length; index++)
      Console::WriteLine(alias->Item[index]);

   Console::WriteLine(S"\nIP address list : ");
   for (int index=0; index < address->Length; index++)
      Console::WriteLine(address->Item[index]);

} catch (SocketException* e) {
   Console::WriteLine(S"SocketException caught!!!");
   Console::WriteLine(S"Source : {0}", e->Source);
   Console::WriteLine(S"Message : {0}", e->Message);
} catch (FormatException* e) {
   Console::WriteLine(S"FormatException caught!!!");
   Console::WriteLine(S"Source : {0}", e->Source);
   Console::WriteLine(S"Message : {0}", e->Message);
} catch (ArgumentNullException* e) {
   Console::WriteLine(S"ArgumentNullException caught!!!");
   Console::WriteLine(S"Source : {0}", e->Source);
   Console::WriteLine(S"Message : {0}", e->Message);
} catch (Exception* e) {
   Console::WriteLine(S"Exception caught!!!");
   Console::WriteLine(S"Source : {0}", e->Source);
   Console::WriteLine(S"Message : {0}", e->Message);
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 1.1, 1.0
Obsolete (compiler warning) in 3.5
Obsolete (compiler warning) in 3.5 SP1
Obsolete (compiler warning) in 3.0
Obsolete (compiler warning) in 3.0 SP1
Obsolete (compiler warning) in 3.0 SP2
Obsolete (compiler warning) in 2.0
Obsolete (compiler warning) in 2.0 SP1
Obsolete (compiler warning) in 2.0 SP2

.NET Compact Framework

Supported in: 1.0
Obsolete (compiler warning) in 3.5
Obsolete (compiler warning) in 2.0

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