C# Input string was not in a correct format localhost

Question

I'm quite a beginner in C# and now I've this problem to recover the ip address of my localhost web.

CS:

LocalIp = Request.ServerVariables["REMOTE_ADDR"];

Response.Write("IP Address: " + LocalIp.ToString());
Response.End();

I wait 127.0.0.1 but in output I've:

IP Address: ::1

What shall I do? The version of IIS is 7.5 in windows 7. Thank in advance,

EDIT: Solved with take a look at the default Windows hosts file, at C:\Windows\System32\drivers\etc\hosts (open with notepad) In previous versions of Windows, we find the following active entry for "localhost"

127.0.0.1       localhost

But in Windows 7 and Windows 2008 R2, the hosts file is effectively empty. While there are both IPv4 and IPv6 entries for "localhost", both are disabled by being commented out.

# 127.0.0.1       localhost
# ::1             localhost

I've enabled and now all working.

127.0.0.1       localhost

Answer 1

That's an IPv6 address. If the connection was made with IPv6, then that is the value you'll get.

Answer 2

Looks good. ::1 is the ipv6 way of saying 127.0.0.1 or localhost.

Answer 3

Actually the ::1 is the correct IPv6 address of your localhost. You were expecting the IPv4 version. Take a look at this article over at 4guysfromrolla.com:

https://web.archive.org/web/20211020102847/https://www.4guysfromrolla.com/articles/071807-1.aspx

Answer 4

Try this one. May be It will help you.

        IPAddress[] localIPs = Dns.GetHostAddresses(Dns.GetHostName());
        foreach (IPAddress Addr in localIPs)
        {                
            if (Addr.AddressFamily == AddressFamily.InterNetwork)
            {
                Response.Write("IP Address: " + Addr );
            }
        }