Detect Network Connectivity and TimeZone changes in Xamarin Forms
This article describes how to detect the network connectivity status and time zone changes in Xamarin forms in all the three (Windows, Android & ios) platforms.
This article is in continuation to previous article – MVVM in Xamarin Forms UWP 10, implementing these changes in MVVM pattern.
Detect Network Connectivity:
In general, network is a platform specific component and requires the platform specific
code changes in all the platforms. But in Xamarin forms, there is cross connectivity
plugin which will take care of all these platform specific implementations. Hence
write the code in Xamarin forms project and run in all the platforms. Install the Xam.Plugin.Connectivity plugin from NuGet in to Xamarin forms project
and it’s platform specific projects
Use below code to get the network status whether connected or disconnected.
public bool IsNetworkAvailable()
If you want to alert the user with connectivity changes when app is active, use the
ConnectivityChanged event as below.
// registering event for network connectivity changes
CrossConnectivity.Current.ConnectivityChanged += this.NetworkConnectivityChanged;
private async void NetworkConnectivityChanged(object sender, ConnectivityChangedEventArgs e)
await App.Current.MainPage.DisplayAlert("Alert", message, "OK");
In case, if you need to get the SSID of the network that your device gets connected,
use platform specific implementation as below.
Create an interface in Xamarin forms project
public interface IPlatformService
Create a class in UWP project and register with dependency
public class PlatformService : IPlatformService
public string GetSSID()
var icp = Windows.Networking.Connectivity.NetworkInformation.GetInternetConnectionProfile();
if (icp != null)
Now, in Xamarin forms project use dependencyService to access the platform specific
SSID function to get the SSID for device connected network as below.
Use below code to detect the network ConnectionType that the device is connected
var connectionType = CrossConnectivity.Current.ConnectionTypes.FirstOrDefault();
if (connectionType == ConnectionType.WiFi)
In case, if you are working with DateTime’s for examples messaging app where you
might need to refresh the messages datetime in appropriate to timezone changes
when app is active or in background.
We don’t have any direct mechanism or approach to refresh the timezone in latest
versions of .Net Framework. Use below work around and then use DateTime.
//refresh the timezone when app is in background(user manually changes the timezone
TimeZoneInfo.ConvertTime(new DateTime(0), TimeZoneInfo.Utc);
var dt = DateTime.Now;
Download the working sample.
By Siva Jagan Dhulipalla Popularity (485 Views)