Simple, basic UWP Background Task

BackgroundTask.cs

public class ApplicationTask : IBackgroundTask
    {
        public void Run(IBackgroundTaskInstance instance)
        {
            Debugger.Break();
        }

        public static async Task<IBackgroundTrigger> RegisterWithApplicationTriggerAsync(params IBackgroundCondition[] conditions)
        {
            var trigger = new ApplicationTrigger();
            await RegisterAsync(trigger, conditions);
            return trigger;
        }

        public static async Task<bool> RegisterAsync(IBackgroundTrigger trigger, params IBackgroundCondition[] conditions)
        {
            var taskName = new StackFrame().GetMethod().DeclaringType.Name;

            try
            {
                RemoveAccess();
                if (!await RequestAccessAsync())
                {
                    throw new Exception("RequestAccessAsync returned false.");
                }
                UnregisterTask();
                RegisterTask();
                return true;
            }
            catch
            {
                return false;
            }

            void RemoveAccess()
            {
                BackgroundExecutionManager.RemoveAccess();
            }

            async Task<bool> RequestAccessAsync()
            {
                var register = await BackgroundExecutionManager.RequestAccessAsync();
                switch (register)
                {
                    case BackgroundAccessStatus.AlwaysAllowed:
                    case BackgroundAccessStatus.AllowedSubjectToSystemPolicy:
                        return true;
                    case BackgroundAccessStatus.Unspecified:
                    case BackgroundAccessStatus.DeniedBySystemPolicy:
                    case BackgroundAccessStatus.DeniedByUser:
                    default:
                        return false;
                }
            }

            void UnregisterTask()
            {
                foreach (var task in BackgroundTaskRegistration.AllTasks
                    .Where(x => x.Value.Name == taskName))
                {
                    task.Value.Unregister(true);
                }
            }

            void RegisterTask()
            {
                var builder = new BackgroundTaskBuilder
                {
                    Name = taskName,
                };
                builder.SetTrigger(trigger);
                foreach (var condition in conditions)
                {
                    builder.AddCondition(condition);
                }
                builder.Register();
            }
        }
    }