public enum YesNoEnum
{
	Yes = 0,
	No = 1
}I also like how they defined the enum values.
private readonly FooType _foo = new FooType();
/// <summary>
/// Gets the controller of this component
/// </summary>
private FooType Foo
{
    get
    {
        return _foo;
    }
}
return IsActive == true ? true : false;public static class time
{
    public const int minutes_per_hour = 60;
    public const int seconds_per_minute = 60;
    public const int hours_per_day = 24;
    public const int minutes_per_day = minutes_per_hour * hours_per_day;
    public const int seconds_per_day = seconds_per_minute * minutes_per_day;
    public const int days_per_year = 365;
}public class NullableFloatToNullableDoubleConverter : ITypeConverter<float?, double?>
    {
        public double? Convert(float? source, double? destination, ResolutionContext context)
        {
            if (source == null)
            {
                return null;
            }
            var floatAsString = source.Value.ToString(CultureInfo.InvariantCulture);
            return double.Parse(floatAsString);
        }
    }
string date = user.RegistrationDate.ToShortDateString().ToString();    if (model.env.Trim().ToUpper() == "Release")
    {
        retVal = false;
        if (!string.IsNullOrEmpty(model.Server_Core))
        {
            // Perform a trim in case user specified just whitespace...
            string tmpStr = model.Server_Core.Trim();
            if (!string.IsNullOrEmpty(tmpStr))
            {
                retVal = true;
            }
        }
    }        protected override void OnStartup(StartupEventArgs e)
        {
            Current.DispatcherUnhandledException += ApplicationUnhandledException;
            base.OnStartup(e);
#if (DEBUG)
            RunInDebugMode(e.Args);
#else
            RunInReleaseMode(e.Args);
#endif
        }
#endregion
        private static void RunInReleaseMode(string[] args)
        {
            AppDomain.CurrentDomain.UnhandledException += AppDomainUnhandledException;
            try
            {
                SplashScreen screen = new SplashScreen(@"Images\splashscreen.png");
                screen.Show(true, true);
                RunInDebugMode(args);
            }
            catch (Exception ex)
            {
                HandleException(ex);
            }
        }
        private static void RunInDebugMode(string[] args)
        {
            var bootstrapper = new Bootstrapper();
            bootstrapper.Run();
        }        public static bool ValidateEmailAddress(string emailAddress)
        {
            string pattern = "^((?>[a-zA-Z\\d!#$%&'*+\\-/=?^_`{|}~]+\x20*|\"((?=[\x01-\x7f])[^\"\\]|\\[\x01-\x7f])*\"\x20*)*(?<angle><))?((?!\\.)(?>\\.?[a-zA-Z\\d!#$%&'*+\\-/=?^_`{|}~]+)+|\"((?=[\x01-\x7f])[^\"\\]|\\[\x01-\x7f])*\")@(((?!-)[a-zA-Z\\d\\-]+(?<!-)\\.)+[a-zA-Z]{2,}|\\[(((?(?<!\\[)\\.)(25[0-5]|2[0-4]\\d|[01]?\\d?\\d)){4}|[a-zA-Z\\d\\-]*[a-zA-Z\\d]:((?=[\x01-\x7f])[^\\\\[\\]]|\\[\x01-\x7f])+)\\])(?(angle)>)$";
            if (!String.IsNullOrEmpty(emailAddress) && !(Regex.Match(emailAddress.Trim(), pattern, RegexOptions.IgnoreCase)).Success)
            {
                return false;
            }
            return true;
        }if ((bool)greenButton.IsChecked)
{
    CurrentColor = Color.FromArgb(0xFF, 0x00, 0xCC, 0x00);
}
else if ((bool)greyButton.IsChecked)
{
    CurrentColor = Color.FromArgb(0xFF, 0x79, 0x79, 0x79);
}
foreach (var item in ItemsList.Items)
{
    if ((grid.Background as SolidColorBrush).Color == CurrentColor)
    {
        selectedItems.Add(item);
    }
}[HttpPost]
[Route("validaPrepacks")]
public IHttpActionResult ValidaPrepacks(ValidaPrepackVO validacion)
{
    try
    {
        return Ok();
    }
    catch (Exception e)
    {
        return Ok(e.Message);
    }
}A code that "validate" a pack in the backend
public partial class Form1 : Form
   {
      public Form1()
      {
         InitializeComponent();
      }
      protected override void OnLoad(EventArgs e)
      {
         base.OnLoad(e);
         var token = new CancellationTokenSource().Token;
         Task.Factory.StartNew (() => {
            while (!token.IsCancellationRequested) {
               try {
                  if (/*Condition*/)
                     this.Invoke(new Action(() => label.Text = " =)"));
                  else
                     this.Invoke(new Action(() => label.Text = " =("));
                  Thread.Sleep(10);
               }
               catch (Exception) {
                  throw;
               }
               finally {
                  throw new Exception();
               }
            }
         }) ;
      }
   }My collegue's way of using multithreading features (and exceptions handling) :)
if (date.Training != null)
            {
                var training = date.Training;
                var status = new TrainingStatus();
                var refresher = new Training();
                if (training.Trainings != null)
                    refresher = training.Trainings;
                bool hasTakenRefresher = false;
                status.Value = date.Date.AddDays(
                    TrainingHelper.CalculateValidityDays(training.Validity ?? 0, training.ValidityType ?? 0));
                status.Name = training.TrainingName;
                status.ID = training.TrainingID;
                status.Category = training.CategoryTraining != null ? training.CategoryTraining.Name : "Other";
                status.IsTrained = _validityUtilsService.IsValid(training, date.Date);
                if (status.IsTrained)
                {
                    status.IsExpiring = _validityUtilsService.IsExpiring(training, date.Date,
                                            TrainingHelper.CalculateValidityDays(
                                                training.ExpirationWarningValidity ?? 0,
                                                training.ExpirationWarningValidityType ?? 0));
                }
                if (refresher.ID != 0)
                {
                    hasTakenRefresher = employee.Dates
                        .Count(x => x.Training != null
                            && x.TrainingID == refresher.ID) > 1;
                    if (hasTakenRefresher && (status.IsExpiring || !status.IsTrained))
                    {
                        status.IsExpiring = false;
                        var trainingWithNewValidity = new Training();
                        status.Value = date.Date.AddDays(
                            TrainingHelper.CalculateValidityDays(training.ValidityRefresher ?? 0,
                                training.ValidityRefresherType ?? 0));
                        trainingWithNewValidity.Validity = training.ValidityRefresher;
                        trainingWithNewValidity.ValidityType = training.ValidityRefresherType;
                        status.IsTrained = _validityUtilsService.IsValid(trainingWithNewValidity, date.Date);
                        if (status.IsTrained)
                        {
                            status.IsExpiring = _validityUtilsService.IsExpiring(trainingWithNewValidity, date.Date,
                                TrainingHelper.CalculateValidityDays(
                                    refresher.ExpirationWarningValidity ?? 0,
                                    refresher.ExpirationWarningValidityType ?? 0));
                        }
                    }
                }
                if (status.IsTrained && !status.IsExpiring)
                    status.Status = TrainingStatuses.Trained;
                else if (status.IsTrained && status.IsExpiring)
                    status.Status = TrainingStatuses.Expiring;
                else if (!status.IsTrained && !status.IsExpiring)
                    status.Status = TrainingStatuses.Expired;
                status.EmpID = employee.ID;
                return status;
            }test
public class MetricsChecker
{
    protected const string AwaitingRecognitionCountMetricName = "AwaitingRecognitionCount";
    protected const string AwaitingExportCountMetricName = "AwaitingExportCount";
    protected const string NotYetDownloadedEventCountMetricName = "NotYetDownloadedEventCount";
    
    ...
    
    public virtual void PublishNotYetDownloadedEventCounts()
    {
        this.logger.Trace($"Starting to gather and publish {NotYetDownloadedEventCountMetricName}(s).");
        ...
    }
    
    ...
}var doc = (Parent as Doc);
doc.Name = (doc != null) ? "" : doc.Name