private void Usage_In_Blocks_Click(object sender, RoutedEventArgs e) { List <UsageBlock> usageBlockList = watcher.BlocksOfContinousUsageForTimeFrame(startTime, startTime + TimeSpan.FromDays(1)); string msg = UsageBlockListToString(usageBlockList); MessageBox.Show(msg, "Usage in block", MessageBoxButton.OK, MessageBoxImage.Information, MessageBoxResult.OK, MessageBoxOptions.DefaultDesktopOnly); }