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You can subscribe to all DataSource events and then use them to further customize the behavior of the DataSource.

The example below demonstrates how to use the Error, RequestStart and RequestEnd events.

    @using Kendo.Mvc.UI

        .Ajax(dataSource => dataSource
        .Read(read => read.Action("Products_Read", "DataSource"))
    function error_handler(e){
        if (e.errors) {
            var message = "Errors:\n";
            $.each(e.errors, function (key, value) {
                if ('errors' in value) {
                    $.each(value.errors, function () {
                        message += this + "\n";
    function onRequestStart(e){
            //apply logic
    function onRequestEnd(e){
        //access the raw remote service response

Next Steps

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