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By: a guest on May 5th, 2012  |  syntax: None  |  size: 2.33 KB  |  hits: 13  |  expires: Never
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  1. Get local IP address of interface used to make a web service call within a Windows service
  2. IPAddress[] localIPs = Dns.GetHostAddresses(Dns.GetHostName());
  3.        
  4. /// <summary>
  5. /// Returns the IP Address of the given interface
  6. /// </summary>
  7. /// <param name="InterfaceName">Name of the interface</param>
  8. /// <param name="AddressFamily">Address family to search for</param>
  9. /// <returns>IPAddress of assinged IP address</returns>
  10. public IPAddress GetIPAddress(string InterfaceName, System.Net.Sockets.AddressFamily AddressFamily)
  11. {
  12.     System.Net.NetworkInformation.NetworkInterface Interface = GetInterface(InterfaceName);
  13.     if (Interface != null)
  14.     {
  15.         foreach (System.Net.NetworkInformation.UnicastIPAddressInformation IP in Interface.GetIPProperties().UnicastAddresses)
  16.         {
  17.             //Match address family
  18.             if(IP.Address.AddressFamily != AddressFamily)
  19.                 continue;
  20.  
  21.             //Check for IPv6 conditions since we can easily have multiple IPs
  22.             if(IP.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetworkV6 && (IP.Address.IsIPv6LinkLocal || IP.AddressPreferredLifetime != uint.MaxValue || IP.AddressValidLifetime != uint.MaxValue))
  23.                 continue;
  24.  
  25.             //We've found the IP
  26.             return IP.Address;
  27.         }
  28.     }
  29.  
  30.     return null;
  31. }
  32.  
  33. /// <summary>
  34. /// Returns the Network Interface for the given windows name
  35. /// </summary>
  36. /// <param name="InterfaceName">Interface name to get (ie Local Area Connection)</param>
  37. /// <returns>Network Interface, or null if not found</returns>
  38. System.Net.NetworkInformation.NetworkInterface GetInterface(string InterfaceName)
  39. {
  40.     if (InterfaceName == null || InterfaceName.Length == 0)
  41.         return null;
  42.  
  43.     foreach (System.Net.NetworkInformation.NetworkInterface Interface in NetworkInterfaceArray)
  44.     {
  45.         if (Interface.Name == InterfaceName)
  46.             return Interface;
  47.     }
  48.  
  49.     return null;
  50. }
  51.        
  52. public static List<string> DisplayDnsAddresses()
  53. {
  54.     var addresses = NetworkInterface.GetAllNetworkInterfaces()
  55.         .Where(a => a.OperationalStatus == OperationalStatus.Up
  56.                     && a.NetworkInterfaceType != NetworkInterfaceType.Loopback)
  57.         .Select(a => a.GetIPProperties())
  58.         .SelectMany(ipp => ipp.UnicastAddresses
  59.             .Select(x => x.Address.ToString()));
  60.  
  61.     return addresses.ToList();
  62. }
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