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IPHostEntry.HostName Property

Gets or sets the DNS name of the host.

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

public string HostName { get; set; }

Property Value

Type: System.String
A string that contains the primary host name for the server.

The HostName property contains the primary host name for a server. If the DNS entry for the server defines additional aliases, they will be available in the Aliases property.

The following example uses the HostName property to retrieve the primary host name.

   public void GetIpAddressList(String hostString)
   {
	   try 
	   {
		   // Get 'IPHostEntry' object containing information like host name, IP addresses, aliases for a host.
		   IPHostEntry hostInfo = Dns.GetHostByName(hostString);
		   Console.WriteLine("Host name : " + hostInfo.HostName);
		   Console.WriteLine("IP address List : ");
		   for(int index=0; index < hostInfo.AddressList.Length; index++)
		   {
			   Console.WriteLine(hostInfo.AddressList[index]);
		   }
	   }
	   catch(SocketException e) 
	   {
		   Console.WriteLine("SocketException 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);
	   }
   }
void GetIpAddressList(String* hostString) {
   try {
      // Get 'IPHostEntry' object containing information
      // like host name, IP addresses, aliases for a host.
      IPHostEntry* hostInfo = Dns::GetHostByName(hostString);
      Console::WriteLine(S"Host name : {0}", hostInfo->HostName);
      Console::WriteLine(S"IP address List : ");
      for (int index = 0 ; index < hostInfo->AddressList->Length ; index++)
         Console::WriteLine(hostInfo->AddressList->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 (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: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0
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