C#使用SignalR实现进度条

1. using System;
   using System.Collections.Generic;
   using System.Linq;
   using System.Web;
   using XXX.WMS.Core.Log;
   using Microsoft.AspNet.SignalR;
   
   namespace XXX.WebUI
   {
       public class SaleBackHub : Hub
       {
           private void Send(string connectionId,string percent)
           {
               // Call the addNewMessageToPage method to update clients.
               try
               {
                   Clients.Client(connectionId).updateProgressbar(percent);
               }
               catch (Exception ex)
               {
                   LoggerManager.GetInstance().Fatal(ex);
               }
           }
   
           public string GetConnectionId()
           {
               return this.Context.ConnectionId;
           }
       }
   }

   ?

2. 服务端调用前端action更新进度条

    1 //使用外部方式调用Hub类方法
    2 var saleBackHub = Microsoft.AspNet.SignalR.GlobalHost.ConnectionManager.GetHubContext<SaleBackHub>();
    3 var percent = 0;
    4 if (!string.IsNullOrWhiteSpace(requestDto.ProgressbarKey))
    5 {
    6 　　percent = (int)((decimal)++progressCount / (decimal)saleBackModelListCount * 100);
    7 try
    8 {
    9    //调用前端action 更新进度条
   10    saleBackHub.Clients.Client(requestDto.ProgressbarKey).updateProgressbar(percent.ToString());
   11 }
   12 catch (Exception ex)
   13 {
   14     throw;
   15 }
   16 }

   ?

1. 　　

   using System;
   using System.Threading.Tasks;
   using Microsoft.Owin;
   using Owin;
   
   [assembly: OwinStartup(typeof(Frxs.WMS.Management.WebUI.Startup))]
   
   namespace xxx.WMS.Management.WebUI
   {
       public class Startup
       {
           public void Configuration(IAppBuilder app)
           {
               // 有关如何配置应用程序的详细信息，请访问 https://go.microsoft.com/fwlink/?LinkID=316888
               app.MapSignalR();
           }
       }
   }

   ?

　前端代码

1. 对应页面引入signalR.js

   <script src="@Url.Content("~/Scripts/signalR/jquery.signalR-2.0.3.min.js“)" type="text/javascript"></script>
   <script src="~/signalr/hubs"></script>

2. 初始化signalR 连接 定义后端推送action? 渲染进度条? 本次用的是jeasyui 进度条弹窗

   var chat;
   var chatConnectionId;
   function initchatHub() {
       // Reference the auto-generated proxy for the hub.
       chat = $.connection.saleBackHub;
       $.connection.hub.logging = true;
       // Get the user name and store it to prepend to messages.
       // Set initial focus to message input box.
       // Start the connection.
       $.connection.hub.start().done(function () {
           chat.server.getConnectionId().done(function (connectionId) {
               chatConnectionId = connectionId;
           });
       });
   
       // Create a function that the hub can call back to display messages.
       chat.client.updateProgressbar = function (percent) {
           // Add the message to the page.
           if (parseInt(percent) <= 100) {
               $.messager.progress(‘bar‘).progressbar(‘setValue‘,percent);
           }
           //var value = $.messager.progress(‘bar‘).progressbar(‘getValue‘);
       };
   }
   
   function showProgressbar() {
       $.messager.progress({
           title: ‘测试进度条‘,interval: 0 //每次进度更新之间以毫秒为单位的时间长度。默认值是 300。 
       });
   }

　　实际效果图

　　参考地址?https://docs.microsoft.com/zh-cn/aspnet/signalr/overview/