Returns the Internet Protocol (IP) addresses for the specified host.
(in System.dll)
Visual Basic (Declaration)
Public Shared Function GetHostAddresses ( _
hostNameOrAddress As String _
) As IPAddress()
Dim hostNameOrAddress As String
Dim returnValue As IPAddress()
returnValue = Dns.GetHostAddresses(hostNameOrAddress)
public static IPAddress[] GetHostAddresses(
string hostNameOrAddress
)
public:
static array<IPAddress^>^ GetHostAddresses(
String^ hostNameOrAddress
)
public static function GetHostAddresses(
hostNameOrAddress : String
) : IPAddress[]
Parameters
- hostNameOrAddress
- Type: System..::.String
The host name or IP address to resolve.
Return Value
Type:
array<System.Net..::.IPAddress>[]()[]An array of type IPAddress that holds the IP addresses for the host that is specified by the hostNameOrAddress parameter.
The GetHostAddresses method queries a DNS server for the IP addresses associated with a host name. If hostNameOrAddress is an IP address, this address is returned without querying the DNS server.
When an empty string is passed as the host name, this method returns the IPv4 addresses of the local host for all operating systems except Windows Server 2003; for Windows Server 2003, both IPv4 and IPv6 addresses for the local host are returned.
.gif) Note: |
|---|
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 GetHostAddresses method to resolve an IP address to an array of type IPAddress.
Public Sub DoGetHostAddresses(hostName As [String])
Dim ips As IPAddress()
ips = Dns.GetHostAddresses(hostname)
Console.WriteLine("GetHostAddresses(" + hostname + ") returns: ")
Dim index As Integer
For index = 0 To ips.Length - 1
Console.WriteLine(ips(index))
Next index
End Sub
public static void DoGetHostAddresses(string hostname)
{
IPAddress[] ips;
ips = Dns.GetHostAddresses(hostname);
Console.WriteLine("GetHostAddresses({0}) returns:", hostname);
foreach (IPAddress ip in ips)
{
Console.WriteLine(" {0}", ip);
}
}
// Determine the Internet Protocol(IP) addresses for a host.
public:
static void DoGetHostAddress(String^ hostname)
{
array<IPAddress^>^ ips;
ips = Dns::GetHostAddresses(hostname);
Console::WriteLine("GetHostAddresses({0}) returns:", hostname);
for each ( IPAddress^ ip in ips )
{
Console::Write( "{0} ", ip );
}
Console::WriteLine( "" );
}
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
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: 3.5, 3.0, 2.0
Reference