Enhancements from writing blog post

PixelHub-Server/PixelHub/NetTools.cs

@@ -19,10 +19,8 @@ namespace SBRL.Utilities
 			foreach (NetworkInterface nic in nics)
 			{
 				Console.WriteLine("Id: {0}, Description: {1}", nic.Id, nic.Description);
-				IPInterfaceProperties ipProps = nic.GetIPProperties();
-				IPv4InterfaceProperties ip4Props = ipProps.GetIPv4Properties();
 				if (nic.Id == targetInterfaceName)
-					return ip4Props.Index;
+					return nic.GetIPv4Index();
 			}
 			throw new Exception($"Error: Can't find network interface with the name {targetInterfaceName}.");
 		}
@@ -51,6 +49,13 @@ namespace SBRL.Utilities
 				}
 			}
 		}
+
+		public static int GetIPv4Index(this NetworkInterface nic)
+		{
+			IPInterfaceProperties ipProps = nic.GetIPProperties();
+			IPv4InterfaceProperties ip4Props = ipProps.GetIPv4Properties();
+			return ip4Props.Index;
+		}
 	}
 }