namespace bbbc
{
    class Program
    {
        static void Main(string[] args)
        {
            int a;
            Random n = new Random();
            while (true)
            {
                int[] arr = new int[5];
                
......................

public partial class Savewendang : Form
    {
        private SqlConnection con = null;//数据库连接
        private SqlCommand cmd = null;//数据库操作
        private BinaryReader read = null;//二进制读取
        private long fileSize = 0;//文件大小
        private string fileName = null;//文件名字
        private string fileType = null;//文件类型
        private byte[] files;//文件

        SqlBaseClass G_SqlExecute = new SqlBaseClass();

......................

int   a, b, c;
           int   s,p;
            Console.WriteLine("请输入三角形的三条边");
            a = Convert.ToInt32(Console.ReadLine());
            b = Convert.ToInt32(Console.ReadLine());
            c = Convert.ToInt32(Console.ReadLine());
           s = Convert.ToInt32(Console.ReadLine());
          p = Convert.ToInt32(Console.ReadLine());
            s= (a + b + c) / 2;
            s = (p - a) * (p - b) * (p - c) * p;
           Console.WriteLine("Math.Sprt(s)={0}", Math.Sqrt(s));
          
......................

public struct STONES
    {
        public int x;
        public int y;
    };
    public struct Lines
    {
        public STONES[] Point = new STONES[2];//错误
        public int[] items= new int[6];//错误
        public int value;
        public int color;
    };

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace cjt2
{
    class Program
    {
        static void Main(string[] args)
        {
......................

using System;  
Public class Exe1  { 
Public static void Main () 
{ 
    Int x,y,z;     
    bool s;     
    x=y=z=0; 
    S=x++!=0 || ++y!=0 && ++y!=0  ; 
     Console.WriteLine(“x={0},y={1},z={2},s={3}”, x,y,z,s);     
     Console.Read(); 
} 
}

//判断缓存
if (HttpRuntime.Cache["RoomClassList"] == null)
            {
                List<RoomClass_V2> obj = _dal.GetPageList();
                HttpRuntime.Cache.Insert("RoomClassList", obj, null, DateTime.Now.AddDays(1), System.Web.Caching.Cache.NoSlidingExpiration);
                return HttpRuntime.Cache["RoomClassList"];
            }
            else
            {
                return HttpRuntime.Cache["RoomClassList"];
            }

求翻译以下c#代码，谢谢！
string hdcontrolurl = "http://tc.hd.xiaomi.com/hdget?callback=hdcontrol";
         request = WebRequest.Create(hdcontrolurl) as HttpWebRequest;
         request.CookieContainer = cookieContainer;
         request.Method = "GET";
         request.Host = "tc.hd.xiaomi.com";
         request.UserAgent = "Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.62 Safari/537.36";
         response = (HttpWebResponse)request.GetResponse();
         Stream instream = response.GetResponseStream();
         sr = new StreamReader(instream, encoding);
         content = sr.ReadToEnd();

......................

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            serialPort1.PortName = "COM1";
            serialPort1.BaudRate = 9600;
             serialPort1.Open();
......................

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            serialPort1.PortName = "COM1";
            serialPort1.BaudRate = 9600;
             serialPort1.Open();
......................