How to return actionresult to ajax post in ASP.NET MVC which returns byte array for pdf

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C#

ASP.NET

Javascript

MVC

I have to return CustomActionResult from Jquery AJAX POST call which in turn returns byte array.where i want to show pdf in new tab using return data

I have tried as following

    var params =
    {
          RPT_Id: $('#hdnRM_RPT_ID').val(), RPT_NAME: $('#hdnRM_REPORT_PATH').val(), _params: jsonobject
        , HAS_LOGO: $('#hdnRM_HAS_LOGO').val(), Is_Multiple: $('#hdn_ISMULTIPLE').val(), RPT_PARAMS: jsonMultiReportObject
        , Fetch_SP: $('#hdn_Fetch_SP').attr('data-fetchsp'), rpttype: rpttype
    };


    $.ajax({
    url: "/Reports/ViewCrystalReport",
    type: 'POST',
    async: false,
    contentType: "application/json; charset=utf-8",
        data: JSON.stringify(params),
    cache: false, responseType: 'arraybuffer',
        success: function (data) {

            console.log(data);
        if (data) {
             var file = new Blob([data], { type: 'application/pdf' });
             var fileURL = URL.createObjectURL(file);
             window.open(fileURL);
           //var pdfWin= window.open(data, '');
        }
        else
            globalFunctions.showMessage("error", translatedResources.roleDeleteMsg);
    },
    error: function (data, xhr, status) {
        globalFunctions.onFailure(data, xhr, status); //Error Function
    }
});

my control action as follows

[HttpPost]
        public CrystalReportPdfResult ViewCrystalReport(int RPT_Id = 0, string RPT_NAME = "",string _params= "", Boolean HAS_LOGO = false, Boolean Is_Multiple = false,string RPT_PARAMS="",string Fetch_SP="",string rpttype="")
        {

            ReportDocument reportDocument = ProcessCrystalReport( RPT_Id ,  RPT_NAME ,  _params ,  HAS_LOGO ,  Is_Multiple ,  RPT_PARAMS,  Fetch_SP ,  rpttype );
            //var rpttype = Request.QueryString["rpttype"];
            //if (rpttype == "pdf")
            //{
            //    if (!string.IsNullOrEmpty(reportPath)) { return new CrystalReportPdfResult(reportDocument, ExportFormatType.PortableDocFormat); }
            //}
            //else if (rpttype == "excel")
            //{
            //    if (!string.IsNullOrEmpty(reportPath)) { return new CrystalReportPdfResult(reportDocument, ExportFormatType.Excel); }
            //}

            if (!string.IsNullOrEmpty(reportPath))
            {
                return new CrystalReportPdfResult(reportDocument);
            }
            return null;

        }

where

CrystalReportPdfResult

is custom actionresult class which reads crystal report and converts to byte array as follows

public CrystalReportPdfResult(ReportDocument rd, ExportFormatType reportType = 0)
        {

            SetDBLogonForReport(rd);
            rd.SetDatabaseLogon(Oasis_User, Oasis_Password, Oasis_Server, Oasis_DB);
            if (reportType == 0)
            {
                _contentBytes = StreamToBytes(rd.ExportToStream(ExportFormatType.PortableDocFormat));
            }
            else
                _contentBytes = StreamToBytes(rd.ExportToStream(reportType));
        }

I am able to see the pdf in new tab but without any content.
Please kindly assist me in resolving the issue in opening pdf from ajax call in asp.net mvc..

Thanks..

What I have tried:

var file = new Blob([data], { type: 'application/pdf' });
                     var fileURL = URL.createObjectURL(file);
                     window.open(fileURL);
                   //var pdfWin= window.open(data, '');