Samples for everyone about developing on C#

sample :


public static bool IsLocalIpAddress(string host)
{
try
{ // get host IP addresses
IPAddress[] hostIPs = Dns.GetHostAddresses(host);
// get local IP addresses
IPAddress[] localIPs = Dns.GetHostAddresses(Dns.GetHostName());

// test if any host IP equals to any local IP or to localhost
foreach (IPAddress hostIP in hostIPs)
{
// is localhost
if (IPAddress.IsLoopback(hostIP)) return true;
// is local address
foreach (IPAddress localIP in localIPs)
{
if (hostIP.Equals(localIP)) return true;
}
}
}
catch { }
return false;
}


You can test the method for example like this:
[C#]

IsLocalIpAddress("localhost"); // true (loopback name)
IsLocalIpAddress("127.0.0.1"); // true (loopback IP)
IsLocalIpAddress("MyNotebook"); // true (my computer name)
IsLocalIpAddress("192.168.0.1"); // true (my IP)
IsLocalIpAddress("NonExistingName"); // false (non existing computer name)
IsLocalIpAddress("99.0.0.1"); // false (non existing IP in my net)



Code by : http://www.csharp-examples.net/examples/