Upload file using Ajax call using ASP.NET MVC

Question

I would like to upload a file in my page using:

<input type="file" name="FileName">

I have a button, clicking on which an ajax post is done.

$.ajax({
           cache: false,
           async: true,
           type: "POST",
           url: '@Url.Content("~/OCR/OCRProcessor")',
           data: '',
           success: function (data) {
               $('#ocrresult').val(data);
           }
       });

I would like to get the file uploaded in the controller action method something like below:

HttpPostedFileBase hpf = Request.Files["FileName"] as HttpPostedFileBase 

Please let me know the optimal way to achieve this task.

Answer 1

jquery Forms plugin (GitHub Link)would be an ideal choice in this context. You can simply do it like this. (Include the file input in this form)

$('#myFormId').submit(function() { 
    // submit the form 
    $(this).ajaxSubmit(); 
    // return false to prevent normal browser submit and page navigation 
    return false; 
});

Demo

This would be a No plugin approach (only in Html5), but I'm still recommending the plugin

$("#myFormId").submit(function(){

    var formData = new FormData($(this)[0]);

    $.ajax({
        url: "YourPath/ToAction",
        type: 'POST',
        data: formData,
        async: false,
        success: function (data) {
            alert(data)
        },
        cache: false,
        contentType: false,
        processData: false
    });

    return false;
});

Another nice plugin.