c# - 在 C# 中，如何解析主机的 IP 地址？

Question

如何动态获取服务器（要连接的 PC）的 IP 地址？

Answer 1

System.Dns.GetHostEntry可用于将名称解析为 IP 地址。

Answer 2

IPHostEntry Host = Dns.GetHostEntry(DNSNameString);
DoSomethingWith(Host.AddressList);

Answer 3

如果您使用以下方法，您将能够正确解决

 public static bool GetResolvedConnecionIPAddress(string serverNameOrURL, out IPAddress resolvedIPAddress)
        {
            bool isResolved = false;
            IPHostEntry hostEntry = null;
            IPAddress resolvIP = null;
            try
            {
                if (!IPAddress.TryParse(serverNameOrURL, out resolvIP))
                {
                    hostEntry = Dns.GetHostEntry(serverNameOrURL);

                    if (hostEntry != null && hostEntry.AddressList != null && hostEntry.AddressList.Length > 0)
                    {
                        if (hostEntry.AddressList.Length == 1)
                        {
                            resolvIP = hostEntry.AddressList[0];
                            isResolved = true;
                        }
                        else
                        {
                            foreach (IPAddress var in hostEntry.AddressList)
                            {
                                if (var.AddressFamily == AddressFamily.InterNetwork)
                                {
                                    resolvIP = var;
                                    isResolved = true;
                                    break;
                                }
                            }
                        }
                    }
                }
                else
                {
                    isResolved = true;
                }
            }
            catch (Exception ex)
            {

            }
            finally
            {
                resolvedIPAddress = resolvIP;
            }

            return isResolved;
        }

Answer 4

你想做一个nslookup。

这是一个例子：

http://www.c-sharpcorner.com/UploadFile/DougBell/NSLookUpDB00112052005013753AM/NSLookUpDB001.aspx

Answer 5

根据您对混乱答案的评论，您不需要服务器的 IP 地址，而是需要客户端的 IP 地址。如果是这种情况，请解决您的问题……您的答案将是 HttpRequest.UserHostAddress。