Kendo UI Grid post rendered or post databound event?

Sonic Soul picture Sonic Soul · Feb 13, 2014 · Viewed 36.1k times · Source

Is there a way to trigger an event after grid has been reloaded via ajax?

i see the RequestEnd event. but that seems to happen when the request returned, but before the grid has been refreshed.

i also see DataBound event. but that happens even earlier than RequestEnd,
also when i implement DataBound event, my header disappears..

i had to resort to this hack

function requestEnd(o) {
    console.debug('request ended.', o);
    setTimeout(refreshEditable, 500); // enough time to render the grid
}
function refreshEditable() {
    // perform my actions on controls within grid content
}

as a side note.. I am having a very hard time finding a reliable kendo grid mvc API reference. when i google for it, i get this: http://docs.telerik.com/kendo-ui/getting-started/using-kendo-with/aspnet-mvc/migration/widgets/grid which is a collection of little how-to and some "Events" but those don't correspond to what I am seeing in razor intelisense.

update: adding databound definition

    $('#grid').kendoGrid({
        dataBound: function(e) {
            console.debug('data bound..');
        }
    });

and here's grid ajax definition

   .Ajax().Read(read => read
        .Action("FilesRead", "SomeController")
        .Data("readData"))

 function readData() {
    return {
        IncludeChildren: $("#IncludeChildren").is(':checked'),
        SearchString: $('input[id=SearchString]').val()
    };
 }

i can see that DataBound is triggered while making the ajax call, not after it comes back.

update

corrected the DataBound event hook.

in dataBound function, i'm trying to get a reference to newly rendered templates..

function dataBound(o) {
  console.debug($('span.editable').length);                    // returns 0 
  setTimeout("console.debug($('span.editable').length)", 500); // returns 4
}

the spans are added using a client template

.ClientTemplate(@"<span class=""editable"" ... >#=DOCUMENT_DATE_FORMATTED#</span>");

see what i mean? data bound happens before grid is rendered

Answer

Lars H&#246;ppner picture Lars Höppner · Feb 13, 2014

See this sample code taken from the documentation (API docs on events are here) on how to bind an event handler using MVC wrappers:

@(Html.Kendo().Grid(Model)
      .Name("grid")
      .Events(e => e
          .DataBound("grid_dataBound")
          .Change("grid_change")
      )
)
<script>
function grid_dataBound() {
    //Handle the dataBound event
}

function grid_change() {
    //Handle the change event
}
</script>

If you want to bind a handler in JavaScript, you need to access the grid like this:

var grid = $("#grid").data("kendoGrid");
grid.bind("dataBound", function(e) {});

When you do this here:

$('#grid').kendoGrid({
    dataBound: function(e) {
        console.debug('data bound..');
    }
});

you actually create a new grid instance.