>未连接
>通过WLAN连接(WiFi)
>通过WWAN(蜂窝数据)连接
>连接到计量网络
以便提供下载大尺寸内容的选项.并且还能感知网络可用性的重大变化.
目前,我只能使用NetworkInterface类的GetIsNetworkAvailable方法检查互联网是否连接.
NetworkInterface.GetIsNetworkAvailable();
解决方法
要检查互联网是否连接使用GetInsNetworkAvailable方法的NetworkInterface类.
bool isInternetConnected = NetworkInterface.GetIsNetworkAvailable();
GetIsNetworkAvailable()@H_404_24@ –
Summary:@H_404_24@ Indicates whether any network connection is available.
Returns:@H_404_24@trueif a network connection is available; otherwise,false.
2.通过WWLN(WiFi)检查Internet连接的可用性
要检查通过WWAN连接的互联网是否使用ConnectionProfile类的IsWlanConnectionProfile属性
ConnectionProfile InternetConnectionProfile = NetworkInformation.GetInternetConnectionProfile(); bool isWLANConnection = (InternetConnectionProfile == null)?false:InternetConnectionProfile.IsWlanConnectionProfile;
IsWlanConnectionProfile@H_404_24@
Summary:@H_404_24@ Gets a value that indicates if connection profile is a WLAN (WiFi) connection. This determines whether or not
WlanConnectionProfileDetails is null.
Returns:@H_404_24@ Indicates if the connection profile represents a WLAN (WiFi) connection.
3.通过WWAN(手机)检查Internet连接的可用性
检查通过WWAN连接的互联网是否使用ConConnectionProfile类的IsWwanConnectionProfile属性
ConnectionProfile InternetConnectionProfile = NetworkInformation.GetInternetConnectionProfile(); bool isWLANConnection = (InternetConnectionProfile == null)?false:InternetConnectionProfile.IsWwanConnectionProfile;
IsWwanConnectionProfile@H_404_24@
Summary:@H_404_24@ Gets a value that indicates if connection profile is a WWAN (mobile) connection. This determines whether or not WwanConnectionProfileDetails is null.
Returns:@H_404_24@ Indicates if the connection profile represents a WWAN (mobile) connection.
4.检查计量网络
要通过计量连接检查Internet是否可达,请在NetworkInterface类上使用GetConnectionCost方法.
var connectionCost = NetworkInformation.GetInternetConnectionProfile().GetConnectionCost();
if (connectionCost.NetworkCostType == NetworkCostType.Unknown
|| connectionCost.NetworkCostType == NetworkCostType.Unrestricted)
{
//Connection cost is unknown/unrestricted
}
else
{
//Metered Network
}
参考(更详细的回答)
https://msdn.microsoft.com/en-us/library/windows/apps/xaml/JJ835821(v=win.10).aspx
https://msdn.microsoft.com/en-us/library/windows/apps/xaml/windows.networking.connectivity.networkcosttype.aspx?cs-save-lang=1&cs-lang=csharp#code-snippet-1
5.管理网络可用性更改
要感知重要的网络可用性更改,请使用NetworkInformation类的eventNetworkStatusChanged
// register for network status change notifications
networkStatusCallback = new NetworkStatusChangedEventHandler(OnNetworkStatusChange);
if (!registeredNetworkStatusNotif)
{
NetworkInformation.NetworkStatusChanged += networkStatusCallback;
registeredNetworkStatusNotif = true;
}
async void OnNetworkStatusChange(object sender)
{
// get the ConnectionProfile that is currently used to connect to the Internet
ConnectionProfile InternetConnectionProfile = NetworkInformation.GetInternetConnectionProfile();
if (InternetConnectionProfile == null)
{
await _cd.RunAsync(CoreDispatcherPriority.Normal,() =>
{
rootPage.NotifyUser("Not connected to Internet\n",NotifyType.StatusMessage);
});
}
else
{
connectionProfileInfo = GetConnectionProfile(InternetConnectionProfile);
await _cd.RunAsync(CoreDispatcherPriority.Normal,() =>
{
rootPage.NotifyUser(connectionProfileInfo,NotifyType.StatusMessage);
});
}
internetProfileInfo = "";
}
参考
https://msdn.microsoft.com/en-us/library/windows/apps/xaml/jj835820.aspx
https://msdn.microsoft.com/en-us/library/windows/apps/xaml/hh452991.aspx
http://www.developerinsider.in/2016/03/13/check-internet-connectivity-in-uwp/
希望对某人有帮助
