DropDown cascading doesn't work with UrlAdaptor

[Manolo]

Hi,

I bind dropdownlist with Url adaptor, but cascading doesn't work. If I bind with viewbag, it works.

I attach an example

Attachment: DropDownExample_5558f77b.zip

[Karthikeyan Viswanathan]

Hi Manolo,   

     

Thanks for contacting Syncfusion support.      

  

In URL databinding, data request will be raised to server based on the query it will return the data but, assigned viewbag data is a local data. Local data query processed internally and it will be shown in the data for corresponding item. In URL databinding, you should execute the query based on the parent dropdown list selection.   

 

Please refer to the code snippet:  

<code>  

@Html.EJ().DropDownList("groupsList2").Datasource(ds => ds.URL(@Url.Content("~") +"Dropdownlist/GetGroupsJson").Adaptor(AdaptorType.UrlAdaptor)).DropDownListFields(f => f.Value("parentId").Text("text")).CascadeTo("countryList2").EnableRTL(false).ClientSideEvents(obj => obj.Cascade("dropcascade"))  

</code>  

<code>  

<script type="text/javascript">  

    function dropcascade(args) {  

        args.cascadeQuery = ej.Query().where(args.model.fields.value, "==", args.cascadeValue);  

}  

</script>  

</code>  

<code>  

        public JsonResult GetCountriesJson(Syncfusion.JavaScript.DataManager dm)  

        {  

            Syncfusion.JavaScript.DataSources.DataOperations operation = newSyncfusion.JavaScript.DataSources.DataOperations();  

            return Json(operation.Execute(GetCountries(), dm));  

        }  

</code>  

           

 Sample link: http://www.syncfusion.com/downloads/support/forum/129633/DROPDO~1-1585023177.ZIP   

         

Regards,          

Karthikeyan V. 

[Manolo]

Thanks!

[Karthikeyan Viswanathan]

Hi Manolo,    

 

Thanks for the update.  

 

We are glad the suggestion helped you to achieve your requirement.  

 

Please let us know if you need further assistance.  

 

Regards,   

Karthikeyan V.