C# IPAddress IsLoopback
Description
IPAddress IsLoopback Indicates whether the specified
IP address is the loopback address.
Syntax
IPAddress.IsLoopback has the following syntax.
public static bool IsLoopback(
IPAddress address
)
Parameters
IPAddress.IsLoopback has the following parameters.
address- An IP address.
Returns
IPAddress.IsLoopback method returns true if address is the loopback address; otherwise, false.
Example
The following code example uses the IsLoopback method to determine whether the specified address is a loopback address.
using System;/*from w w w. ja v a 2 s .com*/
using System.Net;
using System.Net.Sockets;
class IsLoopbackTest
{
private static void Main(string[] args)
{
string ipAddress = "127.0.0.1";
IPAddress address = IPAddress.Parse(ipAddress);
if(IPAddress.IsLoopback(address)&& address.AddressFamily == AddressFamily.InterNetworkV6)
Console.WriteLine("yes IPV6");
else
if(IPAddress.IsLoopback(address) && address.AddressFamily == AddressFamily.InterNetwork)
Console.WriteLine("IPv4");
}
}
The code above generates the following result.
