Close the popup on scroll

12 Apr 20221 minute to read

By using the hidePopup method in DropDownList, you can close the popup on scroll when triggered the windows scroll event.

CSHTML

@Html.EJS().DropDownList("games").Placeholder("Select a game").PopupHeight("200px").DataSource((IEnumerable<object>)ViewBag.data).Render()

<script>
    window.onscroll = () => {
        var dropObj = document.getElementById("games"); //to get dropdown list object
        dropObj.ej2_instances[0].hidePopup(); // hide the popup using hidePopup method
    }
</script>

Closepopup.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using WebApplication1.Models;

namespace WebApplication1.Controllers
{
    public class DropDownListController : Controller
    {
        public IActionResult closepopup()
        {
            ViewBag.data = new string[] { "American Football", "Badminton", "Basketball", "Cricket", "Football", "Golf", "Hockey", "Rugby", "Snooker", "Tennis" };
            return View();
        }
    }
}