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

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

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

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

        /// <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;
        }

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

StartCoroutine(Patrol());

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

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();
                }
            }
        }
    }
}

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