如何在C#中以编程方式获取DNS后缀搜索列表

using System.Net.NetworkInformation;

NetworkInterface[] interfaces = NetworkInterface.GetAllNetworkInterfaces();

NetworkInterface targetInterface = null;
foreach (NetworkInterface nic in interfaces)
{
    if (nic.OperationalStatus == OperationalStatus.Up)
    {
        IPInterfaceProperties ipProperties = nic.GetIPProperties();
        if (ipProperties.DnsSuffix != null && ipProperties.DnsSuffix.Length > 0)
        {
            targetInterface = nic;
            break;
        }
    }
}

IPInterfaceProperties targetIpProperties = targetInterface.GetIPProperties();
string[] dnsSuffixSearchList = targetIpProperties.DnsSuffixes;