Windows8 检测网络

在Windows8 上检测网络很简单用到

NetworkInformation这个类

可以看到这个类里面有以下几个方法和事件

public static event NetworkStatusChangedEventHandler NetworkStatusChanged;//网络连接改变的事件
public static IReadOnlyList<ConnectionProfile> GetConnectionProfiles();
public static IReadOnlyList<HostName> GetHostNames();//获取Host
GetInternetConnectionProfile()//详细网络配置
GetConnectionProfiles()//网络概要信息

       var icp = NetworkInformation.GetInternetConnectionProfile();



                if (icp != null && icp.NetworkAdapter != null)
                {
                    var hostname =
                        NetworkInformation.GetHostNames().SingleOrDefault(
                            hn =>
                            hn.IPInformation != null &&
                            hn.IPInformation.NetworkAdapter.NetworkAdapterId ==
                               icp.NetworkAdapter.NetworkAdapterId);
                    System.Diagnostics.Debug.WriteLine("可用网络IP:" + hostname.DisplayName);
                    System.Diagnostics.Debug.WriteLine("网络状态:" + icp.GetNetworkConnectivityLevel());

                }

使用

NetworkInformation.GetInternetConnectionProfile();获取网络配置后可以得到 NetworkAdapter 网络设备

GetNetworkConnectivityLevel()得到当前网络的状态 他是一个枚举类型具体如下

        // Summary:
        //     No connectivity. 没有访问
        None = 0, 
        //
        // Summary:
        //     Local network access only. 本地网络访问
        LocalAccess = 1,
        //
        // Summary:
        //     Limited internet access. This value indicates captive portal connectivity,
        //     where local access to a web portal is provided, but access to the Internet
        //     requires that specific credentials are provided via the portal. This level
        //     of connectivity is generally encountered when using connections hosted in
        //     public locations (e.g. coffee shops and book stores).
        // 有限的访问
        ConstrainedInternetAccess = 2,
        //
        // Summary:
        //     Local and Internet access. internet访问
        InternetAccess = 3,

可以用NetworkInformation里面的 NetworkStatusChanged 监听网络改变然后在做相应的处理

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