request.form value is null. MVC and ajax code

Hi pranjali,

I am not sure for which javascript function you are talking about but i think it is the same i mentioned below. Please try these changes:

function previewPdf()
{
var formData = $("#rfd03form").serialize();
$.ajax({
url: '/RFD03/generatePDF_rfd03_preview',
data: formData,
type: 'POST',
success: function (response) {
alert(response.pdfDoc);
//var w = window.open('about:blank');
//w.document.open();
//w.document.Clear();
//w.document.Buffer = true;
//w.document.ContentType = "application/pdf";
//w.document.Cache.SetCacheability(HttpCacheability.NoCache);
//w.document.write(response.pdfDoc);
//w.document.BinaryWrite(response.bytes);
//w.document.close();
//alert(response.pdfDoc);
Response.Clear();
Response.Buffer = true;
Response.ContentType = "application/pdf";
Response.AppendHeader("content-disposition", "attachment; filename=" + "RFD03" + "-ViewPDF.pdf");
Response.Cache.SetCacheability(HttpCacheability.NoCache);
Response.Write(response.pdfDoc);
Response.BinaryWrite(response.bytes);
Response.End();
// window.open("data:application/pdf;base64, " + response.base64Pdf);
},
error: function () {
alert('Error occured');
}
});
return false;
}

You may refer to:

https://stackoverflow.com/questions/17797053/how-to-pass-formcollection-using-ajax-call-to-an-action/17797237

https://www.aspsnippets.com/Articles/Submit-POST-FormData-to-Controller-using-jQuery-AJAX-in-ASPNet-MVC.aspx

1 Reply

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Ruchi Sharavat8y ago
Hi pranjali,

I am not sure for which javascript function you are talking about but i think it is the same i mentioned below. Please try these changes:
function previewPdf()
        {
            var formData =  $("#rfd03form").serialize();
            $.ajax({
                url: '/RFD03/generatePDF_rfd03_preview',
                data: formData,
                type: 'POST',

                success: function (response) {
                    alert(response.pdfDoc);
                    //var w = window.open('about:blank');
                    //w.document.open();
                    //w.document.Clear();
                    //w.document.Buffer = true;
                    //w.document.ContentType = "application/pdf";
                    //w.document.Cache.SetCacheability(HttpCacheability.NoCache);
                    //w.document.write(response.pdfDoc);
                    //w.document.BinaryWrite(response.bytes);
                    //w.document.close();
                    //alert(response.pdfDoc);
                    Response.Clear();
                    Response.Buffer = true;
                    Response.ContentType = "application/pdf";
                    Response.AppendHeader("content-disposition", "attachment; filename=" + "RFD03" + "-ViewPDF.pdf");
                    Response.Cache.SetCacheability(HttpCacheability.NoCache);
                    Response.Write(response.pdfDoc);
                    Response.BinaryWrite(response.bytes);
                    Response.End();

                  //  window.open("data:application/pdf;base64, " + response.base64Pdf);

                },
                error: function () {
                    alert('Error occured');
                }

            });
            return false;
        }
You may refer to:
https://stackoverflow.com/questions/17797053/how-to-pass-formcollection-using-ajax-call-to-an-action/17797237

https://www.aspsnippets.com/Articles/Submit-POST-FormData-to-Controller-using-jQuery-AJAX-in-ASPNet-MVC.aspx