Export (0) Print
Expand All

Dns.GetHostEntry Method (IPAddress)

Resolves an IP address to an IPHostEntry instance.

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

public static IPHostEntry GetHostEntry (
	IPAddress address
)
public static IPHostEntry GetHostEntry (
	IPAddress address
)
public static function GetHostEntry (
	address : IPAddress
) : IPHostEntry
Not applicable.

Parameters

address

An IP address.

Return Value

An IPHostEntry instance that contains address information about the host specified in address.

Exception typeCondition

ArgumentNullException

address is a null reference (Nothing in Visual Basic).

SocketException

An error is encountered when resolving address.

ArgumentException

address is an invalid IP address.

The GetHostEntry method queries a DNS server for the IP addresses and aliases associated with an IP address.

NoteNote:

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

The following code example uses the GetHostEntry method to resolve an IP address to an IPHostEntry instance.

public static void DoGetHostEntry(string hostname)
{
    IPHostEntry host;

    host = Dns.GetHostEntry(hostname);

    Console.WriteLine("GetHostEntry({0}) returns:", hostname);

    foreach (IPAddress ip in host.AddressList)
    {
        Console.WriteLine("    {0}", ip);
    }
}

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

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0

.NET Compact Framework

Supported in: 2.0

Community Additions

ADD
Show:
© 2014 Microsoft