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
了解你的公共IP的唯一方法是让别人告诉你;这段代码可以帮助你:
public string GetPublicIP()
{
String direction = "";
WebRequest request = WebRequest.Create("http://checkip.dyndns.org/");
using (WebResponse response = request.GetResponse())
using (StreamReader stream = new StreamReader(response.GetResponseStream()))
{
direction = stream.ReadToEnd();
}
//Search for the ip in the html
int first = direction.IndexOf("Address: ") + 9;
int last = direction.LastIndexOf("</body>");
direction = direction.Substring(first, last - first);
return direction;
}
其他回答
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。
我只是想添加我自己的一行代码(尽管已经有许多其他有用的答案)。
string ipAddress = new WebClient().DownloadString("http://icanhazip.com");
为了获取当前的公网IP地址，你所需要做的就是在页面加载事件中创建一个ASPX页面，代码如下:
Response.Write(HttpContext.Current.Request.UserHostAddress.ToString());
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
这是我解决它的方法。我知道如果你有几个物理接口，这可能不会选择你想要的确切的eth。
private string FetchIP()
{
//Get all IP registered
List<string> IPList = new List<string>();
IPHostEntry host;
host = Dns.GetHostEntry(Dns.GetHostName());
foreach (IPAddress ip in host.AddressList)
{
if (ip.AddressFamily == AddressFamily.InterNetwork)
{
IPList.Add(ip.ToString());
}
}
//Find the first IP which is not only local
foreach (string a in IPList)
{
Ping p = new Ping();
string[] b = a.Split('.');
string ip2 = b[0] + "." + b[1] + "." + b[2] + ".1";
PingReply t = p.Send(ip2);
p.Dispose();
if (t.Status == IPStatus.Success && ip2 != a)
{
return a;
}
}
return null;
}
