c# - 检查Windows 8手机应用程序中是否打开了互联网？

Question

我有一个Windows Phone 8应用程序。在启动或打开我的应用程序之前，我需要检查设备是否有互联网连接。

如果是 Internet，off那么它应该将用户定向settings page到turn on the internet.

public static bool checkNetworkConnection()
{
    var ni = NetworkInterface.NetworkInterfaceType;

    bool IsConnected = false;
    if ((ni == NetworkInterfaceType.Wireless80211)|| (ni == NetworkInterfaceType.MobileBroadbandCdma)|| (ni == NetworkInterfaceType.MobileBroadbandGsm))
        IsConnected= true;
    else if (ni == NetworkInterfaceType.None)
        IsConnected= false;
    return IsConnected;
}

我试过这个，但它说：

NetworkInterfaceType not found in System.Net.NetworkInformation

有人可以指导我吗？

Answer 1

请尝试以下代码：

public static bool checkNetworkConnection()
{
    return NetworkInterface.GetIsNetworkAvailable();
}

使用此命名空间： using Microsoft.Phone.Net.NetworkInformation;获取网络信息。

希望这对你有帮助。

Answer 2

试试下面的代码：

bool Connection = checkNetworkConnection()
if(Connection == false)
{ 
     // Here is ConnectionSettingTask to Go directly InternetSetting 
     ConnectionSettingsTask cst = new ConnectionSettingsTask();
     cst.ConnectionSettingsType = ConnectionSettingsType.Cellular;
     cst.Show(); 
}
public static bool checkNetworkConnection() 
{
    var ni = NetworkInterface.NetworkInterfaceType;
    bool IsConnected = false;
    if ((ni == NetworkInterfaceType.Wireless80211)|| (ni == NetworkInterfaceType.MobileBroadbandCdma)|| (ni == NetworkInterfaceType.MobileBroadbandGsm))
        IsConnected= true;
    else if (ni == NetworkInterfaceType.None)
         IsConnected= false;
    return IsConnected;
}