在ASP.Net MVC的长时间运行的服务器的进度条调用 [英] Progress bar for long running server calls in ASP.Net MVC

问题描述

我只是想创建一个进度条，而长时间运行的服务器调用。我无法创建一个AJAX POST请求控制器，而控制器是做一个长期运行的工作。

I just want to create a progress bar while long running server calls. I could not create a ajax post request to the controller while the controller is doing a long running job.

我想创建一个额外行动来得到当前的长期运行的任务的实际语句。 我试图创建民意调查在Ajax请求的话，我可以能够从服务器端返回的状态，并在客户端的进度条显示。有任何想法吗 ？

I want to create an additional action to get the actual statement of current long running task. I tried to create poll in ajax request then i can able to return the status from the server side and display it in a client side progress bar. Any ideas ?

推荐答案

正确的，最简单的就是使用SignalR方式。请下载Microsoft SignalR在 https://www.nuget.org/packages/ Microsoft.AspNet.SignalR / 2.1.2

The right and easiest way to do this is with SignalR. Please download Microsoft SignalR in https://www.nuget.org/packages/Microsoft.AspNet.SignalR/2.1.2

在创建项目的路径被称为枢纽单独的文件夹毂类，添加两个类文件到集线器夹

Create a hub class in separate folder in project path called hubs, add two class files into the hubs folder

Startup.cs

Startup.cs

using Owin;
using Microsoft.Owin;
[assembly: OwinStartup(typeof(SignalRChat.Startup))]
namespace SignalRChat
{
    public class Startup
    {
        public void Configuration(IAppBuilder app)
        {
            // Any connection or hub wire up and configuration should go here
            app.MapSignalR();
        }
    }
}

ProgressHub.cs

ProgressHub.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading;
using System.Web;
using Microsoft.AspNet.SignalR;

namespace RealTimeProgressBar
{
    public class ProgressHub : Hub
    {

        public string msg = "Initializing and Preparing...";
        public int count = 1;

        public static void SendMessage(string msg , int count)
        {
            var message = "Process completed for " + msg;
            var hubContext = GlobalHost.ConnectionManager.GetHubContext<ProgressHub>();
            hubContext.Clients.All.sendMessage(string.Format(message), count);
        }

        public void GetCountAndMessage()
        {
            Clients.Caller.sendMessage(string.Format(msg), count);
        }
    }
}

在控制器，

//组装

using Microsoft.AspNet.SignalR;
using RealTimeProgressBar;   

//调用这个方法，你的工作action里面

//call this method inside your working action

ProgressHub.SendMessage("initializing and preparing",  2);

在视图中，

<!--The jQuery library is required and is referenced by default in _Layout.cshtml. -->
<!--Reference the SignalR library. -->
<script src="~/Scripts/jquery.signalR-2.1.2.min.js"></script>
<!--Reference the autogenerated SignalR hub script. -->
<script src="~/signalr/hubs"></script>
<!--SignalR script to update the chat page and send messages.--> 

  $(document).ready(function () {

    $("#progressBar").kendoProgressBar({
        min: 0,
        max: 100,
        type: "percent",
    });
});

function StartInvoicing()
{
    var progressNotifier = $.connection.progressHub;

    // client-side sendMessage function that will be called from the server-side
    progressNotifier.client.sendMessage = function (message, count) {
        // update progress
        UpdateProgress(message, count);
        //alert(message);
    };

    // establish the connection to the server and start server-side operation
    $.connection.hub.start().done(function () {
        // call the method CallLongOperation defined in the Hub
        progressNotifier.server.getCountAndMessage();
    });
}

//更新进度条

// Update the progress bar

 function UpdateProgress(message, count) {
        var result = $("#result");
        result.html(message);
        $("#progressBar").data("kendoProgressBar").value(count);
    }

有关更多详情，请参阅现有的一些文章与谷歌的帮助

For more details refer some existing articles with the help of google

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