Возможно получить разделитель CSV из Потока. CurrentThread. CurrentCulture? (.NET)

$("#add_product").click(function(e){
    e.preventDefault();
    var fdata = new FormData()
    
   fdata.append("product_name",$("product_name").val());
  
    if($("#file")[0].files.length>0)
       fdata.append("file",$("#file")[0].files[0])
    //d = $("#add_new_product").serialize();
    $.ajax({
        type: 'POST',
        url: 'ajax.php',
        data:fdata,
        contentType: false,
        processData: false, 
        success: function(response)
        {
            //
            alert(response);

        }
    })
});

 <!-- File Button --> 
    <div class="form-group">
    <label class="col-md-4 control-label" for="file">Upload Software / File</label>
    <div class="col-md-4">
    <input id="file" name="file" class="input-file" type="file">
    </div>
    </div>

<div class="form-group">
<label class="col-md-4 control-label" for="price">Price($)</label>  
<div class="col-md-4">
<input id="price" name="price" type="text" placeholder="Price" class="form-control input-md" required=""> 
</div>
</div>