Set the nested Accordion

@using Syncfusion.EJ2.Navigations;

<div style="display: none">
    @Html.EJS().Accordion("childNested1").Items(new List<AccordionAccordionItem>
    {
        new AccordionAccordionItem { Header = "Video-1" },
        new AccordionAccordionItem { Header = "Video-2" }
    }).Render()
</div>
<div style="display: none">
    @Html.EJS().Accordion("childNested2").Items(new List<AccordionAccordionItem>
        {
        new AccordionAccordionItem { Header = "Music-1" },
        new AccordionAccordionItem { Header = "Music-2" },
        new AccordionAccordionItem { Header = "New Playlist", Expanded = true, Content= "#childNested4" }
        }).Render()
</div>
<div style="display: none">
    @Html.EJS().Accordion("childNested3").Items(new List<AccordionAccordionItem>
    {
        new AccordionAccordionItem { Header = "Image-1" },
        new AccordionAccordionItem { Header = "Image-2" }
    }).Render()
</div>
<div style="display: none">
    @Html.EJS().Accordion("childNested4").Items(new List<AccordionAccordionItem>
    {
        new AccordionAccordionItem { Header = "New Track-1" },
        new AccordionAccordionItem { Header = "New Track-2" }
    }).Render()
</div>
<div>
    @Html.EJS().Accordion("ParentNested").Width("50%").ExpandMode(ExpandMode.Multiple).Items(new List<AccordionAccordionItem>
    {
        new AccordionAccordionItem { Header = "Videos", Expanded = true, Content = "#childNested1" },
        new AccordionAccordionItem { Header = "Music", Expanded = true, Content = "#childNested2" },
        new AccordionAccordionItem { Header = "Images", Expanded = true, Content = "#childNested3" }
    }).Render()
</div>

public ActionResult Index()
{
    return View();
}