Question

I’m new to Visual Studio and .net, so forgive me if I have some of the basics wrong.

This is what I wanna doe: fill content of a kendoui dropdownlist by using an ajax call. Now have I understood that it is preferred to use POST actions, but I cant get it to work.

Here’s my code within the view:

@(Html.Kendo().DropDownListFor(model => model.TypeId)
      .DataTextField("Shortname")
      .DataValueField("Id")
      .DataSource(source => source.Read(read => read.Action("GetObjectTypes", "ObjectType")))
)    

Here’s my controller code:

[HttpPost] // use post to prevent 'leeching' 
public JsonResult GetObjectTypes()
{
    var objectTypes = _objecttypeRepository.All;
    return Json(objectTypes, JsonRequestBehavior.DenyGet);
}

The Ajax call doesn’t gets to the GetObjectTypes at all.
If I remove the [HttpPost] and the “JsonRequestBehavior.DenyGet” then this code works fine.

Many thanks in advance.

Answer 1

‘GET’ is actually the preferred method for retrieving resources (i.e. your dropdown list data), see HTTP protocol request methods. ‘POST’ is normally used to submit data and creating a new resource.

I haven’t done it myself, but if you really need to use ‘POST’ you may be able to specify it in the data source configuration, see kendo.data.DataSource’s transport.read.type.