public static string GetLocalIpAddress()
{
System.Net.NetworkInformation.UnicastIPAddressInformation mostSuitableIp = null;
var networkInterfaces = System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces();
foreach (var network in networkInterfaces)
{
if (network.OperationalStatus != System.Net.NetworkInformation.OperationalStatus.Up)
{
continue;
}
var properties = network.GetIPProperties();
if (properties.GatewayAddresses.Count == 0)
{
continue;
}
foreach (var address in properties.UnicastAddresses)
{
if (address.Address.AddressFamily != AddressFamily.InterNetwork)
{
continue;
}
if (IPAddress.IsLoopback(address.Address))
{
continue;
}
if (!address.IsDnsEligible)
{
if (mostSuitableIp == null)
{
mostSuitableIp = address;
}
continue;
}
// The best IP is the IP got from DHCP server
if (address.PrefixOrigin != System.Net.NetworkInformation.PrefixOrigin.Dhcp)
{
if (mostSuitableIp == null || !mostSuitableIp.IsDnsEligible)
{
mostSuitableIp = address;
}
continue;
}
return(address.Address.ToString());
}
}
return(mostSuitableIp != null
? mostSuitableIp.Address.ToString()
: "");
}
//private System.Net.IPAddress GetIPAddress(string ComputerName, bool isReturnIPAddress)
//{
// System.Net.IPAddress[] tempIP;
// string tmpBuilder = string.Empty;
// //tempIP = System.Net.Dns.Resolve( ComputerName ).AddressList;
// tempIP = System.Net.Dns.GetHostEntry( ComputerName ).AddressList;
// System.Text.StringBuilder strBuilder = new System.Text.StringBuilder();
// for(int i=0; i<tempIP.Length; i++)
// {
// strBuilder.Append(tempIP[i]);
// }
// tmpBuilder = strBuilder.ToString();
// tempIP = null;
// strBuilder = null;
// return System.Net.IPAddress.Parse(tmpBuilder);
//}
#region Get IPAddress new version
private static System.Net.IPAddress CalculateNetwork(System.Net.NetworkInformation.UnicastIPAddressInformation addr)
{
// The mask will be null in some scenarios, like a dhcp address 169.254.x.x
if (addr.IPv4Mask == null)
{
return(null);
}
var ip = addr.Address.GetAddressBytes();
var mask = addr.IPv4Mask.GetAddressBytes();
var result = new System.Byte[4];
for (int i = 0; i < 4; ++i)
{
result[i] = (System.Byte)(ip[i] & mask[i]);
}
return(new System.Net.IPAddress(result));
}
public static string GuessLocalIpAddress(System.Net.NetworkInformation.NetworkInterfaceType?ofType)
{
System.Net.NetworkInformation.UnicastIPAddressInformation mostSuitableIp = null;
System.Net.NetworkInformation.NetworkInterface[] networkInterfaces =
System.Net.NetworkInformation.NetworkInterface.GetAllNetworkInterfaces();
foreach (System.Net.NetworkInformation.NetworkInterface network in networkInterfaces)
{
if (ofType.HasValue && network.NetworkInterfaceType != ofType)
{
continue;
}
if (network.OperationalStatus != System.Net.NetworkInformation.OperationalStatus.Up)
{
continue;
}
if (network.Description.ToLower().Contains("virtual") ||
network.Description.ToLower().Contains("pseudo")
)
{
continue;
}
System.Net.NetworkInformation.IPInterfaceProperties properties = network.GetIPProperties();
if (properties.GatewayAddresses.Count == 0)
{
continue;
}
foreach (System.Net.NetworkInformation.UnicastIPAddressInformation address in properties.UnicastAddresses)
{
if (address.Address.AddressFamily != System.Net.Sockets.AddressFamily.InterNetwork)
{
continue;
}
if (System.Net.IPAddress.IsLoopback(address.Address))
{
continue;
}
if (System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(System.Runtime.InteropServices.OSPlatform.Windows) &&
!address.IsDnsEligible)
{
if (mostSuitableIp == null)
{
mostSuitableIp = address;
}
continue;
}
// The best IP is the IP got from DHCP server
if (System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(System.Runtime.InteropServices.OSPlatform.Windows) &&
address.PrefixOrigin != System.Net.NetworkInformation.PrefixOrigin.Dhcp)
{
if (mostSuitableIp == null || !mostSuitableIp.IsDnsEligible)
{
mostSuitableIp = address;
}
continue;
}
// System.Console.WriteLine(address.IPv4Mask); // Subnet Mask
return(address.Address.ToString());
}
}
return(mostSuitableIp != null
? mostSuitableIp.Address.ToString()
: "");
}
