//Запрос всех бэкапов private async void GetBackups() => await Task.Run(() => { _backups = NirsSystem.GetListBackups(); IsCreateBackup = true; foreach (var elem in _backups) { if (elem.DateOfCreate.Date == DateTime.Now.Date) { IsCreateBackup = false; } } if (!NirsSystem.IsDatabaseContextCreated) { IsCreateBackup = false; } OnPropertyChanged("IsCreateBackup"); OnPropertyChanged("Backups"); });