通过linq在iPhone上的Monotouch/Xamarin上获取IP地址 [英] Get IP Address on Monotouch/Xamarin in iphone via linq

问题描述

我是linq的新手，并且想用它来获取iOS设备的ip地址.我想知道是否有人对此方法有任何疑问(基于

I'm new to linq, and want to use it to get the ip address of an iOS device. I was wondering if anyone sees any problems with this approach (based on this How do I get the network interface and its right IPv4 address? ) or if there is a better/more compact/more clean way to do it.

  // get my IP
  string ip = NetworkInterface.GetAllNetworkInterfaces()
    .Where(x => x.Name.Equals("en0"))
      .Select(n => n.GetIPProperties().UnicastAddresses)
      .Where(x => x.First().Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
      .Select(x => x.First().Address.ToString());

推荐答案

我认为您代码的问题在于最后一个Select. Where选择器已经返回了IEnumerable，这意味着此时您的IEnumerable为UnicastIPAddressInformationCollection.然后在那一点上，只需选择第一个并指向address属性，然后使用以下命令将其转换为字符串:.First().Address.ToString()

I think the problem with your code lies with the last Select. The Where selector already returns an IEnumerable, which means at that point you have an IEnumerable of UnicastIPAddressInformationCollection. Then at that point, just select the first one and point to the address property and convert to string using: .First().Address.ToString()

以下是为我完成工作的示例:

Here's an example that did the job for me:

public string IpEndPoint
    {
        get
        {
            return NetworkInterface.GetAllNetworkInterfaces()
           .Where(ni => ni.Name.Equals("en0"))
           .First().GetIPProperties().UnicastAddresses
           .Where(add => add.Address.AddressFamily == AddressFamily.InterNetwork)
           .First().Address.ToString();
        }
    }

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