UWP

// Add these to your existing using statements.
using Sentry;
using Sentry.Protocol;
using UnhandledExceptionEventArgs = Windows.UI.Xaml.UnhandledExceptionEventArgs;

sealed partial class App : Application
{
    public App()
    {
        // Initialize Sentry in the App constructor before any other code, to ensure you capture all possible exceptions.
        SentrySdk.Init(o =>
        {
            // Tells which project in Sentry to send events to:
            o.Dsn = "https://examplePublicKey@o0.ingest.sentry.io/0";

            // When configuring for the first time, to see what the SDK is doing:
            o.Debug = true;

            // Set traces_sample_rate to 1.0 to capture 100% of transactions for performance monitoring.
            // We recommend adjusting this value in production.
            o.TracesSampleRate = 1.0;

            // Enable Global Mode since this is a client app.
            o.IsGlobalModeEnabled = true;

            // TODO:Any other Sentry options you need go here.
        });

        // Hook the UWP UnhandledException event before initializing the app component.
        this.UnhandledException += OnUnhandledException;

        // Initialize the app component, and hook the Suspending event.
        this.InitializeComponent();
        this.Suspending += OnSuspending;

        // Add any other code you may need last.
    }

    // Update your OnSuspending handler as shown

    private async void OnSuspending(object sender, SuspendingEventArgs e)
    {
        var deferral = e.SuspendingOperation.GetDeferral();

        // Flush Sentry events when suspending
        await SentrySdk.FlushAsync(TimeSpan.FromSeconds(2));

        // TODO: Save any other application state and stop any background activity.

        deferral.Complete();
    }

    // Add this OnUnhandledException handler.

    // Use these attributes to ensure all types of exceptions are handled.
    [SecurityCritical]
    [HandleProcessCorruptedStateExceptions]
    private void OnUnhandledException(object sender, UnhandledExceptionEventArgs e)
    {
        // Get a reference to the exception, because the Exception property is cleared when accessed.
        var exception = e.Exception;
        if (exception != null)
        {
            // Tell Sentry this was an unhandled exception
            exception.Data[Mechanism.HandledKey] = false;
            exception.Data[Mechanism.MechanismKey] = "Application.UnhandledException";

            // Capture the exception
            SentrySdk.CaptureException(exception);

            // Flush the event immediately
            SentrySdk.FlushAsync(TimeSpan.FromSeconds(2)).GetAwaiter().GetResult();
        }
    }
}