如何在长服务器进程中显示信息丰富的实时进度数据

Question

我有这么长的过程可能需要1个小时.

这个过程包括每年运行的许多步骤.我的主要问题是:

如何在此过程中为最终用户提供信息丰富的实时进度,而不仅仅是虚拟装载栏.

            int index = Convert.ToInt32(e.CommandArgument);
            bool done = false;
            int res = -1;
            int fromVal = int.Parse(gv_balance.Rows[index].Cells[0].Text);
            int toVal = int.Parse(gv_balance.Rows[index].Cells[1].Text);
            int finMonth = 1;
            int finYear = 0;
            int EndServ = 0;
            int calcYear = int.Parse(gv_balance.Rows[index].Cells[2].Text);
            int total;
            total = ((toVal - fromVal) + 1);
            string msg = string.Empty;

            int confirm = Balance.GetConfirmState(calcYear);
            if (confirm == 0)
            {
                RadProgressContext progress = RadProgressContext.Current;
                progress.Speed = "N/A";

                finYear = fromVal;

                for (int i = fromVal; i <= toVal; i++)
                {
                    decimal ratio;
                    //Load New Employees
                    if (toVal - fromVal > 0)
                    {
                        ratio = ((decimal)toVal - i) / (toVal - fromVal) * 100;
                    }
                    else
                    {
                        ratio = ((decimal)toVal - i) / 1 * 100;
                    }
                    progress.PrimaryTotal = total;
                    progress.PrimaryValue = total;
                    progress.PrimaryPercent = 100;

                    progress.SecondaryTotal = 100; // total;
                    progress.SecondaryValue = ratio;//i ;
                    progress.SecondaryPercent = ratio; //i;


                    progress.CurrentOperationText = "Step " + i.ToString();
                    if (!Response.IsClientConnected)
                    {
                        //Cancel button was clicked or the browser was closed, so stop processing
                        break;
                    }

                    progress.TimeEstimated = (toVal - i) * 100;
                    //Stall the current thread for 0.1 seconds
                    System.Threading.Thread.Sleep(100);
                    EndServ = i + 1;
                    if (i == fromVal)
                    {   
                        //--->STEP1
                        //Load intial data 
                        int intial = Balance.PrepareIntialData(calcYear);
                        //--->STEP2
                        res = Balance.CalcEndServed(calcYear, EndServ - 1, 6, 30);

                    }
                     //--->STEP3
                    int newEmps = Balance.PrepareNewEmployees(calcYear, i);

                    for (int j = 0; j < 2; j++)
                    {
                        if (j == 0)
                        {
                            finMonth = 7;
                            finYear = i;

                        }
                        else
                        {
                            finMonth = 1;
                            finYear = i + 1;
                        }
                        //--->STEP4
                        int promotion1 = Balance.PreparePromotionFirst(finYear, finMonth, calcYear);
                         //--->STEP5
                        int promotion2 = Balance.PreparePromotionSecond(finYear, finMonth, calcYear);
                         //--->STEP6
                        int appointment1 = Balance.PrepareAppointmentFirst(finYear, finMonth, calcYear);
                         //--->STEP7
                        int appointment2 = Balance.PrepareAppointmentSecond(finYear, finMonth, calcYear);

                        //--->STEP8
                        int bonus = Balance.PrepareBonus(finMonth, finYear, 0, calcYear);

                         //--->STEP9
                        int salary = Balance.PrepareSalary(finYear, finMonth, calcYear);
                     (((CheckBox)gv_balance.Rows[index].Cells[3].FindControl("chk_redirect")).Checked == true)
                        {
                           //--->STEP9
                            int acco = Balance.PrepareFinanceAccount(finYear, finMonth, calcYear);
                        }

                    }


                    //--->STEP10
                    res = Balance.CalcEndServed(calcYear, EndServ, 6, 30);
                    Balance.CalcStudy(calcYear);
                    UpdateProgressContext();
                    if (res < 0)
                    {

                        success_lb.Visible = false;
                        error_lb.Visible = true;
                        error_lb.Text = "ERROR";

                    }
                    else
                    {
                        done = true;
                        success_lb.Visible = true;
                        error_lb.Visible = false;
                        success_lb.Text = "Success";
                    }


                }
            }

---

我想以示例的方式显示当前步骤: (Promotion 1 ) in ---> 1-2018以及整个过程在估计时间旁边的百分比.

Answer 1

要使用signalR报告一个非常长的任务的进度,你可以做这样的事情(这只是一个展示它如何工作的例子):

服务器部分

我们首先映射SignalR.

public class Startup
{
   public void Configuration(IAppBuilder app)
   {
       // Any connection or hub wire up and configuration should go here
       app.MapSignalR();
   }
}

我们创建一个hub类(不要忘记安装signalr包):

(如果要向所有连接用户或特定用户组报告进度,请查看此处:http://www.asp.net/signalr/overview/guide-to-the-api/working-with-groups)

在给定的示例中,它仅向Start函数的调用者报告进度.

public class MyHub : Hub
{     
    public void Start(string arg)
    {
        Task.Run(() =>
        {
            AVeryLongTask();
        });
    }

    //simulate a long task
    void AVeryLongTask()
    {
        for (int i = 0; i < 10000; i++)
        {
            Thread.Sleep(100);              
            Clients.Caller.ReportProgress("AVeryLongTask", i * 100 / 10000);
        }
    }
}

客户端部分

在html中,您必须添加以下引用:

<!--Script references. -->
<!--Reference the jQuery library. -->
<script src="Scripts/jquery-1.6.4.min.js"></script>
<!--Reference the SignalR library. -->
<script src="/Scripts/jquery.signalR-2.0.0.js"></script>
<!--Reference the autogenerated SignalR hub script. -->
<script src="/signalr/hubs"></script>

现在Js将从中心获得进展:

 $(function() {
   // Declare a proxy to reference the hub.
   var hub = $.connection.myHub;
   // Create a function that the hub can call to report progress.
   hub.client.reportProgress = function(functionName, progress) {
     $('#progression').append('<li><strong>' + progress + '</strong>:&nbsp;&nbsp;' + functionName + '</li>');
   };
   // Start the connection.
   $.connection.hub.start().done(function() {
     $('#startlongprocess').click(function() {
      //start the long process
       hub.server.start("arg");
       alert("started");
     });
   });
 });

进度和开始按钮的html容器:

<div class="container">    
   <input type="button" id="startlongprocess" value="Send" />
   <ul id="progression"></ul>
</div>

如果您需要更多解释,请不要犹豫.

(我的例子是基于这个来自信号员团队的http://www.asp.net/signalr/overview/getting-started/tutorial-getting-started-with-signalr)

Answer 2

您可以使用Web套接字将进度更新推送到客户端.SignalR是一个dotnet库,它包裹websockets并在没有websockets的地方回落.网上有综合示例,展示了如何使用SignalR实现进度报告,因此无需重复.看看这里:

https://github.com/dragouf/SignalR.Progress

或者在这里:

https://www.safaribooksonline.com/blog/2014/02/06/server-side-signalr/

举些例子.