C# · 12月 30, 2021

c# – 在长时间服务器进程中如何显示信息量的实时进度数据

我有一个漫长的过程可能需要1个小时.

这个过程包括从年到年的许多步骤.我的主要问题是:

如何在进程期间向终端用户提供一个信息丰富的实时进度,而不仅仅是虚拟加载栏.

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,calcYear); //—>STEP6 int appointment1 = Balance.PrepareAppointmentFirst(finYear,calcYear); //—>STEP7 int appointment2 = Balance.PrepareAppointmentSecond(finYear,calcYear); //—>STEP8 int bonus = Balance.PrepareBonus(finMonth,finYear,calcYear); //—>STEP9 int salary = Balance.PrepareSalary(finYear,calcYear); (((Check@R_123_2419@)gv_balance.Rows[index].Cells[3].FindControl(“chk_redirect”)).Checked == true) { //—>STEP9 int acco = Balance.PrepareFinanceAccount(finYear,calcYear); } } //—>STEP10 res = Balance.CalcEndServed(calcYear,EndServ,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”; } } }

我想显示当前步骤,例如:
(促销1)in —> 1-2018以及估计时间之外的整个过程的百分比.

解决方法 要使用signalR来报告一个很长的任务的进度,你可以这样做(这只是一个例子来说明它是如何工作的):

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(不要忘了安装signalr包):

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

在给定的例子中,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>

现在的Js部分是从中心获得进步:

$(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”); }); }); });

用于进度和开始按钮的html容器:

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

如果您需要更多的解释,请不要犹豫.

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