Trying to return json from page handler but it's returning html code (Razor Pages)

[troncomputers]

Is this a Bug or Feature request?:

Bug (I think)

Steps to reproduce (preferably a link to a GitHub repo with a repro project):

Just try to return json from page handler.

public class Customer
{
     public int ID { get; set; }
     public string Code { get; set; }
     public string Name { get; set; }
}

Index.cshtml.cs

public JsonResult PageData()
{
    Customer c = new Customer();
    c.ID = 1;
    c.Code = "TEST";
    c.Name = "Test Customer Pro";

    return new JsonResult(tn);
}
//or
public IActionResult PageData()
{
    Customer c = new Customer();
    c.ID = 1;
    c.Code = "TEST";
    c.Name = "Test Customer Pro";

    return new JsonResult(tn);
}

Index.cshtml

<a asp-page-handler="PageData" class="btn btn-secondary text-primary mt-3">
   <span class="btn-icon">
       <i class="la la-plus"></i>Customer
   </span>
</a>

Description of the problem:

Page handler returns html not json. I'm trying to use DataTables helper: LZorglub/DataTables.AspnetCore.Mvc

Version of Microsoft.AspNetCore.Mvc or Microsoft.AspNetCore.App or Microsoft.AspNetCore.All: 2.1

[mkArtakMSFT]

Thanks for contacting us, @troncomputers. You should use a certain naming convention so the handler is hit. Try to rename the handler to OnGetPageData but leave the asp-page-handler="PageData".

[troncomputers]

OMG, yes. I'm sorry...