Problem with server error handling on DataTables 1.10.9 with ASP.NET MVC 5

edhalsim

Hi,
My Datatables control is pulling rows from a server. The server may throw an exception as follows:

catch (Exception ex)
{
    if (ex.Message.IndexOf("See the inner exception for details") > 0)
    {
        return Json(new { error = ex.InnerException.Message });
    }
    return Json(new { error = ex.Message });
}

I want to catch the error, not process the data as there isn't any, and show the error message on my page, preferable in the @Html.ValidationSummary() area. Here's what I have:

@section Scripts{
    <script src="//cdn.datatables.net/1.10.9/js/jquery.dataTables.min.js"></script>
    <script>
    $(document).ready(function () {
        $.fn.dataTable.ext.errMode = 'none';
        $('#search-results').on('error.dt', function(e, settings, techNote, message) {
            console.log( 'An error has been reported by DataTables: ', message );
        }).DataTable({
            "processing": true,
            "serverSide": true,
            "searching": false,
            "orderMulti": false,
            "order": [[3, "asc"]],
            "ajax": {
                "url": "/providers/AjaxHandler",
                "type": "POST",
                "datatype": "json",
...

Problem is, nothing is getting logged. Even replacing "console.log" with a "debugger;" statement doesn't load the debugger.

Thanks for the help.
- Ed.

edhalsim

I found my initial error (JavaScript nesting). Now I'm getting this error:
Unable to get property 'ext' of undefined or null reference
on:
$.fn.dataTable.ext