Progress bar for long running server calls in ASP.Net MVC

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.

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 ?


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Method 1

The right and easiest way to do this is with SignalR. Please download Microsoft SignalR in

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


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


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);

In controller,

// assemblies
using Microsoft.AspNet.SignalR;
using RealTimeProgressBar;   

//call this method inside your working action
ProgressHub.SendMessage("initializing and preparing",  2);

In View,

<!--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.--> 
<script type="text/javascript">
  $(document).ready(function () {

        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);

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

// Update the progress bar 
function UpdateProgress(message, count) {
    var result = $("#result");

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

Method 2

I had a long running service for that, I have given a basic idea below. Use it as per your requirements.

  1. I made a structure of the progress arguments ProgressArgs
  2. In the long running service LongRunningProcess(), updated the progress values at regular interval and saved in JSON format in the database
  3. Created a Action method getProgress() which will return a JSON string progress by ajax.
  4. Created a function Javascript getProgress() function which once started will call the server at regular intervals for progress till the process is completed.

I have given a rough example to implement it. Hope it may help you.

The class for progress arguments structure

public class ProgressArgs
    public int Completed { get; set; }
    public int Total { get; set; }
    public int Percentage { get; set; }
    public string Status { get; set; }

In the Process I kept on updating the stats in the database

    public void LongRunningProcess()

        ProgressArgs result = new ProgressArgs();
        result.Completed = 0;
        result.Total = userList.Count;
        foreach (var item in itemList)
           //Do Some processing which u want to do

            result.Percentage = (result.Completed * 100) / result.Total;
            result.Status = "Processing";
            string strToSave = Newtonsoft.Json.JsonConvert.SerializeObject(result);
            //update the strToSave to the database somewhere.

        //after completing of processing
        result.Percentage = (result.Completed * 100) / result.Total;
        result.Status = "Completed";
        string strToSave = Newtonsoft.Json.JsonConvert.SerializeObject(result);
        //update the strToSave to the database somewhere.


The C# Action to get the progress by ajax

    public string getProgress()
        string strJSON = config.GetValue("progress");  //Get stats from the database which is saved in json
        return strJSON;

The Javascript Code

//Ajax Get Progress function
    function getProgress() {
        var dataToSend = '';
            url: '@Url.Action("getProgress")', //Link to the action method
            type: 'POST',
            contentType: 'application/json; charset=utf-8',
            data: dataToSend,
            success: function (response) {
                if (response != null) {
                    data = JSON.parse(response);
                    //update the progressbar
                    progressbar.progressbar("value", data.Percentage);
                    //When the jobalert status is completed clear the interval
                    if (data.Status == 0) {
                        setTimeout(getProgress, 800); //TImout function to call the respective function at that time
                    serviceCompleted(data); function to call after completing service
            error: function (xhr) {
                alert('Error: There was some error while posting question. Please try again later.');

All methods was sourced from or, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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