if (string.Compare(json["result"].ToString(), "OK", true) == 0)
{
    if (string.Compare(json["list"][0]["result"].ToString(), "OK", true) == 0)
        return null;
        
    //omitted
}

namespace network
{
    class ip
    {
        uint _IP;
        public ushort this[int i]
        {
            get
            {
                switch(i)
                {
                    case 0:
                    case 1:
                    case 2:
                    case 3:
                        return (ushort)(_IP>>(i*8));
                    default:
                    throw new IndexOutOfRangeException();
                }
            }
            set
            {
                switch(i)
                {
                    case 0:
                    case 1:
                    case 2:
                    case 3:
                        _IP=(((uint)value)<<i*8);
                        break;
                    default:
                    throw new IndexOutOfRangeException();
                }
            }
        }
    }
}

StartCoroutine(Patrol());

public IEnumerator Patrol() {
    while(true) {
        dt.Walk();
        yield return new WaitForSeconds(reactionTime);
    }
}

if(products.Length < 0) {
    foreach (var p in products)
    {
        //...
    }
}

        /// <summary>
        /// Builds the suffixs for the request sequence number
        /// </summary>
        /// <param name="i"></param>
        /// <returns></returns>
        public static string GetSequenceNumber(int i)
        {
            string strCount = string.Empty;
            string increase = string.Empty;
            int count;
            strCount = i.ToString();
            count = strCount.Length;
            //Add 0 infront of the index to make a 4 digit number
            if (count < 5)
            {
                for (int j = 0; j < (4 - count); j++)
                {
                    increase = increase + "0";
                }
                strCount = increase + strCount;
            }
            return strCount;
        }

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class StoryOfMyLife : MonoBehaviour
{
    void OnDestory()
    {
        Debug.Log("  Directed by  ");
        Debug.Log("ROBERT B. WEIDE");
    }
}

if ((string)filtros[0] != "-1" && (string)filtros[0] != "0") 
    filtros[0] = (string)filtros[0] != "" ? filtros[0] : DBNull.Value;
    
else
    filtros[0] = DBNull.Value;  

/// <summary> 
/// Desctop constructor
/// </summary>
...

var doc = (Parent as Doc);
doc.Name = (doc != null) ? "" : doc.Name

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).");
        ...
    }
    
    ...
}

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;
            }

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();
               }
            }
         }) ;
      }
   }

[HttpPost]
[Route("validaPrepacks")]
public IHttpActionResult ValidaPrepacks(ValidaPrepackVO validacion)
{
    try
    {
        return Ok();
    }
    catch (Exception e)
    {
        return Ok(e.Message);
    }

}

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);
    }
}

        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;
        }