C# Random.ToString方法代碼示例

        protected void LinkButton3_Click(object sender, EventArgs e)
        {
            HttpContext.Current.Response.AppendHeader("Content-encoding", "");

            Random random = new Random();
            imgCaptcha.ImageUrl = imgCaptcha.ImageUrl + "?" + random.ToString();
        }

        static void Main(string[] args)
        {
            try
            {
                string url = "65.52.224.21:10000";

                var fs = File.Create(filename);
                fs.Close();

                Timer timer = new Timer(5000);
                timer.Elapsed += new ElapsedEventHandler(timer_Elapsed);
                timer.Start();

                for (int i = new Random().Next(0, 1000000); i >= 0; i++)
                {
                    try
                    {
                        var server = MongoServer.Create(string.Format("mongodb://{0}/?slaveOk=true", url));
                        server.Connect();

                        var db = server.GetDatabase("test");
                        var collection = db.GetCollection<BsonDocument>("numbers");
                        collection.Insert(new BsonDocument()
                        {
                            { i.ToString(), @"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur venenatis, lectus viverra blandit faucibus, eros risus adipiscing ipsum, at iaculis magna neque in nibh. Nulla venenatis, purus in imperdiet aliquet, ligula ligula gravida lorem, et egestas justo tellus cursus elit. Nam ut metus leo. In et odio et ligula auctor vulputate. Nunc posuere erat at tortor molestie gravida. Vestibulum sodales nunc pharetra tellus aliquam et blandit risus suscipit. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Proin erat leo, eleifend vitae hendrerit sollicitudin, eleifend vel neque. Sed et sapien nunc, at adipiscing dolor. Sed luctus mollis arcu, eu adipiscing risus suscipit nec. Aenean eu elit lacus, in dapibus sem. Aliquam est dui, porta vitae fringilla eget, tristique in neque. Aliquam eget nisl ac tellus sodales viverra. Nam mauris mauris, ornare placerat aliquet id, eleifend et mauris. Fusce iaculis condimentum aliquet. Nunc dictum massa nunc." }
                        });

                        insertCount++;

                        var query = Query.EQ(i.ToString(), @"Lorem ipsum dolor sit amet, consectetur adipiscing elit. Curabitur venenatis, lectus viverra blandit faucibus, eros risus adipiscing ipsum, at iaculis magna neque in nibh. Nulla venenatis, purus in imperdiet aliquet, ligula ligula gravida lorem, et egestas justo tellus cursus elit. Nam ut metus leo. In et odio et ligula auctor vulputate. Nunc posuere erat at tortor molestie gravida. Vestibulum sodales nunc pharetra tellus aliquam et blandit risus suscipit. Class aptent taciti sociosqu ad litora torquent per conubia nostra, per inceptos himenaeos. Proin erat leo, eleifend vitae hendrerit sollicitudin, eleifend vel neque. Sed et sapien nunc, at adipiscing dolor. Sed luctus mollis arcu, eu adipiscing risus suscipit nec. Aenean eu elit lacus, in dapibus sem. Aliquam est dui, porta vitae fringilla eget, tristique in neque. Aliquam eget nisl ac tellus sodales viverra. Nam mauris mauris, ornare placerat aliquet id, eleifend et mauris. Fusce iaculis condimentum aliquet. Nunc dictum massa nunc.");
                        foreach (BsonDocument number in collection.Find(query))
                        {
                            var element = number.Elements.ToList()[1];
                            Console.WriteLine(string.Format("Name: {0} - Value : {1}[...]", element.Name, element.Value.AsString.Substring(0, 40)));
                        }
                    }
                    catch (Exception ex)
                    {
                        Console.WriteLine("erreur");
                        Console.WriteLine(ex.Message);
                    }
                }
            }
            catch (Exception exx)
            {
                Console.WriteLine(exx.Message);
            }
            finally
            {
                Console.WriteLine("Appuyez sur une touche pour quitter");
                Console.ReadLine();
            }
        }

        public ActionResult CreateNewRoom()
        {
            var newRoomNumber = new Random()
                .ToEnumerable(r => r.Next(100, 10000))
                .First(n => this.Db.Rooms.Any(room => room.RoomNumber == n) == false);

            var urlOfThisRoom = Url.AppUrl() + Url.Action("Room", new { id = newRoomNumber });
            var bitly = Bitly.Default;
            var shortUrlOfThisRoom = bitly.Status == Bitly.StatusType.Available ?
#if DEBUG
                bitly.ShortenUrl("http://asktheaudiencenow.azurewebsites.net/Room/" + newRoomNumber.ToString()) : "";
#else
                bitly.ShortenUrl(urlOfThisRoom) : "";
#endif

            var options = new[] { 
                new Option{ DisplayOrder = 1, Text = "Yes" },
                new Option{ DisplayOrder = 2, Text = "No"},
            }.ToList();

            this.Db.Rooms.Add(new Room
            {
                RoomNumber = newRoomNumber,
                OwnerUserID = this.User.Identity.Name,
                Options = options,
                Url = urlOfThisRoom,
                ShortUrl = shortUrlOfThisRoom
            });
            this.Db.SaveChanges();

            return RedirectToAction("Room", new { id = newRoomNumber });
        }

        public HttpResponseMessage DiceRoll(string triggerState,
                                        [Metadata("Number of Sides", "Number of sides that should be on the die that is rolled")]
                                        int numberOfSides,
                                        [Metadata("Target Number", "Trigger will fire if dice roll is above this number")]
                                        int targetNumber)
        {
            // Validate configuration
            if (numberOfSides <= 0)
            {
                return Request.CreateErrorResponse(HttpStatusCode.BadRequest,
                                                        "Bad configuration. Dice require 1 or more sides");
            }

            int lastRoll = 0;
            int.TryParse(triggerState, out lastRoll);
            int thisRoll = new Random().Next(numberOfSides);

            // Roll the dice
            if (thisRoll >= targetNumber /* We've hit or exceeded the target */
                    && thisRoll != lastRoll /* And this dice roll isn't the same as the last */)
            {
                // Let the Logic App know the dice roll matched
                return Request.EventTriggered(new SamplePollingResult(thisRoll),
                                                triggerState: thisRoll.ToString(),
                                                pollAgain: TimeSpan.FromSeconds(30)); 
            }
            else
            {
                // Let the Logic App know we don't have any data for it
                return Request.EventWaitPoll(retryDelay: null, triggerState: triggerState);

            }

        }

        public void ZAP()
        {
            var score = new Random().Next(32);

            Debug.Print("Zapping for " + score);
            _queueClient.CreateQueueMessage(score.ToString());
        }

        public void CHOMP()
        {
            var score = new Random().Next(16);

            Debug.Print("Chomping for " + score);
            _queueClient.CreateQueueMessage(score.ToString());
        }

        public void ProcessRequest(HttpContext context)
        {
            try
            {
                var tokenReportIdentifier = context.Request.QueryString[Constants.KindOfReportParameter];
                var reportService = CreateInstanceBasedOnToken(tokenReportIdentifier);

                //Retrieve the class name parameters
                var classNames = new StringDictionary();
                foreach (var styleName in typeof (StyleName).GetFields())
                    classNames.Add(styleName.Name, context.Request[styleName.GetValue(null).ToString()]);

                var textResponse = reportService.getReport(context.Request.QueryString);

                //it waits 1 up to 10 seconds
                var rnd = new Random(DateTime.Now.Millisecond).Next(1, 7);
                Thread.Sleep(rnd*1000);
                Log.Debug(GetType(),
                          "Time loading the report: " + rnd.ToString(CultureInfo.InvariantCulture) + " seconds");
                // *** end ***
                textResponse = ReportHelper.FormatResultTokens(textResponse, classNames);

                if (!String.IsNullOrEmpty(context.Request[Constants.JsonCallbackParameter]))
                    textResponse = String.Format(CultureInfo.InvariantCulture, "{0}({1});",
                                                 context.Request[Constants.JsonCallbackParameter], textResponse);

                context.Response.StatusCode = (int) HttpStatusCode.OK;
                context.Response.ContentType = "application/json";
                context.Response.Write(textResponse);
            }
            catch (Exception ex)
            {
                Log.LogException(GetType(), ex);
            }
        }

 protected int Login_Input()
 {
     UserLoginStatus loginStatus = new UserLoginStatus();
     UserInfo objUserInfo = UserController.ValidateUser(PortalId, tbUsername.Text, tbPassword.Text, "", PortalSettings.PortalName, Request.UserHostAddress, ref loginStatus);
     if (loginStatus == UserLoginStatus.LOGIN_SUCCESS || loginStatus == UserLoginStatus.LOGIN_SUPERUSER)
     {
         UserController.UserLogin(PortalId, objUserInfo, PortalSettings.PortalName, Request.UserHostAddress, false);
         if (cbRemember.Checked)
         {
             // Set settings
             int random = new Random().Next();
             ModuleController obModule = new ModuleController();
             obModule.UpdateModuleSetting(ModuleId, tbUsername.Text, random.ToString());
             // Set cookie
             HttpCookie obCookie = new HttpCookie(cookie_name());
             obCookie.Value = string.Format("{0}_{1}", random, tbUsername.Text);
             obCookie.Expires = DateTime.Today.AddMonths(3);
             Response.Cookies.Add(obCookie);
             obCookie = new HttpCookie("EOFFICE");
             obCookie.Value = Request.ApplicationPath;
             obCookie.Expires = DateTime.Today.AddYears(1);
             obCookie.HttpOnly = false;
             Response.Cookies.Add(obCookie);
         }
         return 1;
     }
     else
     {
         lbError.Text = "Tên đăng nhập hoặc Mật khẩu không chính xác";
         return 0;
     }
 }

        public void Execute(IrcDotNet.IrcClient Client, string Channel, IrcDotNet.IrcUser Sender, string Message)
        {
            string[] words = Message.Trim().Split(' ');
            if (words.Length < 2 || words.Length > 2)
            {
                Client.LocalUser.SendMessage(Channel, "!random <start> <end>");
                return;
            }

            int start, end;
            try
            {
                start = Convert.ToInt32(words[0]);
                end = Convert.ToInt32(words[1]);
            }
            catch (Exception)
            {
                Client.LocalUser.SendMessage(Channel, "Numbers please");
                return;
            }

            int random = new Random().Next(start, end + 1);

            Client.LocalUser.SendMessage(Channel, random.ToString());
        }

        public string Generatetxnid()
        {
            Random rnd = new Random();
            string strHash = Generatehash512(rnd.ToString() + DateTime.Now);
            //string txnid1 = strHash.ToString().Substring(0, 20);

            return strHash.ToString().Substring(0, 20);
        }

        private bool ValidateOperation()
        {
            return true;

            Thread.Sleep(3000);
            var validateResult = new Random().Next(0, 2) == 1 ? true : false;
            Console.WriteLine("Thread:" + Thread.CurrentThread.ManagedThreadId + "   Validate " + validateResult.ToString());
            return validateResult;
        }

        public void LoadPage() {
            var i1 = new MGMixAndMatchItems();
            var i2 = new MGMixAndMatchItems();
            var i3 = new MGMixAndMatchItems();
            MGMixAndMatch.Get3RandomItems(int.Parse(MMID.Text), out i1, out i2, out i3);

            MGMixAndMatchItems correctItem = null;
            var correctItemNumber = new Random(DateTime.Now.Millisecond).Next(1, 3);
            switch(correctItemNumber) {
                case 1:
                    correctItem = i1;
                    break;
                case 2:
                    correctItem = i2;
                    break;
                case 3:
                    correctItem = i3;
                    break;
            }

            var difficulty = int.Parse(Difficulty.Text);

            if(correctItem != null) {
                MMIID.Text = correctItem.MMIID.ToString();
                StringBuilder audio = new StringBuilder(MixMatchBasePath);

                switch(difficulty) {
                    case 2:
                        //medium
                        lblMixMatch.Text = correctItem.MediumLabel;
                        audio.AppendFormat("m_{0}.mp3", MMIID.Text);
                        break;
                    case 3:
                        //hard
                        lblMixMatch.Text = correctItem.HardLabel;
                        audio.AppendFormat("h_{0}.mp3", MMIID.Text);
                        break;
                    default:
                        lblMixMatch.Text = correctItem.EasyLabel;
                        audio.AppendFormat("e_{0}.mp3", MMIID.Text);
                        break;
                }

                if(System.IO.File.Exists(Server.MapPath(audio.ToString()))) {
                    lblSound.Text = string.Format(
                        "<audio controls><source src='{0}' type='audio/mpeg'>Your browser does not support this audio format.</audio>",
                        VirtualPathUtility.ToAbsolute(audio.ToString()));
                    pnlAudio.Visible = true;
                }
            }

            Correct.Text = correctItemNumber.ToString();

            btn1.ImageUrl = string.Format("{0}{1}.png", MixMatchBasePath, i1.MMIID);
            btn2.ImageUrl = string.Format("{0}{1}.png", MixMatchBasePath, i2.MMIID);
            btn3.ImageUrl = string.Format("{0}{1}.png", MixMatchBasePath, i3.MMIID);
        }

        private void timer_tick(object sender, object e)
        {
            Random rand1 = new Random();
            answer = rand1.Next(1, 75);
            List<Data> data = new List<Data>();
            data.Add(new Data() { Category = rand1.ToString(), Value = answer });

            this.Graph1.DataContext = data;
        }

 public string RandMD5()
 {
     var res = String.Empty;
     var source = new Random();
     using (MD5 md5Hash = MD5.Create())
     {
         res = GetMd5Hash(md5Hash, source.ToString());
     }
     return res;
 }

 public object createPk()
 {
     int rangdomNum=new Random().Next(1000,9999);
     string pk = string.Format("{0}{1}"
         , DateTime.Now.ToString("yyyyMMddHHmmss")
         ,rangdomNum.ToString()
     );
     Thread.Sleep(50);
     return pk;
 }