获取网络适配器的IP并在连接处于非活动状态时在messagebox...gets中显示错误

using System.Net;
using System.Net.NetworkInformation;

NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();

foreach (NetworkInterface adapter in adapters)
{
    IPInterfaceProperties properties = adapter.GetIPProperties();
    foreach (UnicastIPAddressInformation address in properties.UnicastAddresses)
    {
        if (address.Address.AddressFamily == System.Net.Sockets.AddressFamily.InterNetwork)
        {
            string ipAddress = address.Address.ToString();
            // 处理IP地址
        }
    }
}

foreach (NetworkInterface adapter in adapters)
{
    if (adapter.OperationalStatus != OperationalStatus.Up)
    {
        MessageBox.Show("网络连接处于非活动状态，请检查网络连接设置。");
    }
}