Bootstrap Progress Bar for MVC File Upload

Bootstrap Progress Bar for MVC File Upload

Is there an easy way to show a blocking Bootstrap progress bar while a file is loading?
The progress is shown in the status bar in chrome as the file is uploaded:

I’d like the dialog to look something like this

My Action looks something like this:
[HttpPost]
public ActionResult Upload(UploadViewModel model)
{
using (MemoryStream uploadedFile = new MemoryStream())
{
model.File.InputStream.CopyTo(uploadedFile);
uploadService.UploadFile(uploadedFile, model.File.ContentType)
return View();
}
}

Model:
public class UploadViewModel
{
[Required]
public HttpPostedFileBase File { get; set; }
}

View:
@model Bleh.Web.Models.UploadViewModel

@using (Html.BeginForm(“Upload”, “Home”,
FormMethod.Post, new { enctype = “multipart/form-data”, @role = “form” }))
{

@Html.LabelFor(m => m.File)
@Html.TextBoxFor(m => m.File, new { type = “file”, @class = “form-control” })
@Html.ValidationMessageFor(m => m.File, null, new { @class = “label label-danger” })

}

Is there an easy way to process the percentage that the browser displays and apply it to the progress bar?

Solutions/Answers:

Solution 1:

Do ajax progress handler do the job?

function uploadFile(){
    myApp.showPleaseWait(); //show dialog
    var file=document.getElementById('file_name').files[0];
    var formData = new FormData();
    formData.append("file_name", file);
    ajax = new XMLHttpRequest();
    ajax.upload.addEventListener("progress", progressHandler, false);
    ajax.addEventListener("load", completeHandler, false);
    ajax.open("POST", "/to/action");
    ajax.send(formData);
}

function progressHandler(event){
    var percent = (event.loaded / event.total) * 100;
    $('.bar').width(percent); //from bootstrap bar class
}

function completeHandler(){
    myApp.hidePleaseWait(); //hide dialog
    $('.bar').width(100);
}

Note: myApp.showPleaseWait(); and myApp.hidePleaseWait(); are defined in the link provided by OP.

Related:  Preferred way of using Bootstrap in Webpack

(edit: formData and formdata was previously inconsistent)

References