Kendo MVC DropDownList - unable to reload

[Laurie]

I am defining the following Kendo DropDownlist in asp.net mvc:

@(Html.Kendo().DropDownList()
     .Name("OrganizationName")
     .DataTextField("OrganizationName")
     .DataValueField("OrganizationName")
     .OptionLabel("-- Select an Organization --")
     .HtmlAttributes(new { style = "width: 100%;" })
     .DataSource(source =>
     {
          source.Custom()
          .ServerFiltering(false)
          .Type("aspnetmvc-ajax")
          .Transport(transport =>
          {
               transport.Read(read =>
               {
                   read.Url(@Url.HttpRouteUrl("DefaultAPI", new { controller = "OrganizationAPI", action = "GetAllOrganizations" })).Type(HttpVerbs.Get);
               });
           })
           .Schema(schema =>
           {
               schema.Data("Data")
               .Total("Total");
           });
      }))

And I am trying to reload the dropdownlist using javascript, as follows:

 

function RebindOrganizations() {
    $('#OrganizationName').data("kendoDropDownList").dataSource.read();
}

The DropDownList is loading initially, but it throws an "undefined" in the javascript, specifically at the .data("kendoDropDownList") portion of the code. The error is:

 

TypeError: $(...).data(...) is undefined

Now I think it's probable that the issue arises because I'm trying to make the call upon returning from a modal window. Here is the code that actually calls my function:

 

    function bindForm(dialog) {
    $('form', dialog).submit(function () {
        $.ajax({
            url: this.action,
            type: this.method,
            data: $(this).serialize(),
            success: function (result) {
                if (result.success) {
                    $('#myModal').modal('hide');
                    if (result.url != null)
                        $('#replacetarget').load(result.url); //  Load data from the server and place the returned HTML into the matched element
                    else {
                        RebindOrganizations();
                    }
                } else {
                    $('#myModalContent').html(result);
                    bindForm(dialog);
                }
            }
        });
        return false;
    });
}

But when I click an input button with onClick="RebindOrganizations();" it works.

Anyone able to tell me what I'm doing wrong?

Thanks!

Laurie

[Laurie]

I should probably have named this "Unable to reload after returning from ajax call"

[Georgi Krustev]

Hi,

If the $('#OrganizationName').data("kendoDropDownList") line returns "undefined", then the element is not available at the moment of the call. I would suggest you verify that the element is accessible using the $('#OrganizationName') method. If it isn't then you will need to refactor your implementation in order to satisfy this requirement.

If the problem still persists, we will need a repro demo that demonstrates the issue. Thus we will be able to review the implementation locally and advice you further.

Regards,
Georgi Krustev
Telerik

[Laurie]

I'll open a support ticket.