New to Telerik UI for ASP.NET Core? Download free 30-day trial

Events

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

   @(Html.Kendo().DataSource<Kendo.Mvc.Examples.Models.ProductViewModel>()
        .Name("dataSource1")
        .Ajax(dataSource => dataSource
        .Read(read => read.Action("Products_Read", "DataSource"))
        .ServerOperation(true)
        .PageSize(12)
        .Events(e=>e.Error("error_handler").RequestStart("onRequestStart").Request("onRequestEnd"))
        )
    )
    <kendo-datasource name="dataSource1" type="DataSourceTagHelperType.Ajax" server-operation="true" page-size="12"
        on-error="error_handler"
        on-request-end="onRequestEnd"
        on-request-start="onRequestStart">
        <transport>
            <read url="@Url.Action("Products_Read", "DataSource")" />
        </transport>
    </kendo-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";
                    });
                }
            });
            alert(message);
        }
    }
    function onRequestStart(e){
        if(e.type=="create"){
            //apply logic
        }
    }
    function onRequestEnd(e){
        //access the raw remote service response
        console.log(e.response);
    }

Next Steps

See Also

In this article