我正在运行一个服务器，我想显示我自己的IP地址。
获取计算机自身(如果可能的话，外部)IP地址的语法是什么?
有人编写了以下代码。
IPHostEntry host;
string localIP = "?";
host = Dns.GetHostEntry(Dns.GetHostName());
foreach (IPAddress ip in host.AddressList)
{
if (ip.AddressFamily.ToString() == "InterNetwork")
{
localIP = ip.ToString();
}
}
return localIP;
然而，我通常不信任作者，我不理解这段代码。有更好的方法吗?
当前回答
这是在VB中获取所有本地ip的csv格式。网
Imports System.Net
Imports System.Net.Sockets
Function GetIPAddress() As String
Dim ipList As List(Of String) = New List(Of String)
Dim host As IPHostEntry
Dim localIP As String = "?"
host = Dns.GetHostEntry(Dns.GetHostName())
For Each ip As IPAddress In host.AddressList
If ip.AddressFamily = AddressFamily.InterNetwork Then
localIP = ip.ToString()
ipList.Add(localIP)
End If
Next
Dim ret As String = String.Join(",", ipList.ToArray)
Return ret
End Function
其他回答
为了找到IP地址列表，我已经使用了这个解决方案
public static IEnumerable<string> GetAddresses()
{
var host = Dns.GetHostEntry(Dns.GetHostName());
return (from ip in host.AddressList where ip.AddressFamily == AddressFamily.lo select ip.ToString()).ToList();
}
但我个人喜欢下面的解决方案，以获得本地有效的IP地址
public static IPAddress GetIPAddress(string hostName)
{
Ping ping = new Ping();
var replay = ping.Send(hostName);
if (replay.Status == IPStatus.Success)
{
return replay.Address;
}
return null;
}
public static void Main()
{
Console.WriteLine("Local IP Address: " + GetIPAddress(Dns.GetHostName()));
Console.WriteLine("Google IP:" + GetIPAddress("google.com");
Console.ReadLine();
}
也许通过外部IP，您可以考虑(如果您在Web服务器上下文中)使用此方法
Request.ServerVariables["LOCAL_ADDR"];
我也在问你同样的问题，我在这篇stackoverflow的文章中找到了它。
这对我很管用。
WebClient webClient = new WebClient();
string IP = webClient.DownloadString("http://myip.ozymo.com/");
清洁和一体解决方案:D
//This returns the first IP4 address or null
return Dns.GetHostEntry(Dns.GetHostName()).AddressList.FirstOrDefault(ip => ip.AddressFamily == AddressFamily.InterNetwork);
LINQ解决方案:
Dns.GetHostEntry(Dns.GetHostName()).AddressList.Where(ip => ip.AddressFamily == AddressFamily.InterNetwork).Select(ip => ip.ToString()).FirstOrDefault() ?? ""
