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Trigger click event of input file from external button

You can trigger the click event of input file from external button using click event of button. In the below sample, triggered click event of input file from Essential JavaScript 2 Button.

tagHelper
external-click.cs
index.css
@{
    var asyncSettings = new Syncfusion.EJ2.Inputs.UploaderAsyncSettings { SaveUrl = "https://aspnetmvc.syncfusion.com/services/api/uploadbox/Save", RemoveUrl = "https://aspnetmvc.syncfusion.com/services/api/uploadbox/Remove" };
}

<div class="col-lg-8 control-section">
    <div class="control_wrapper">
        <!-- Initialize Uploader -->
        <div id="dropArea">
            <span id="drop"> Drop image (JPG, PNG) files here or <button class='e-btn e-control' id="browse">Browse</button></span>
        </div>
        <ejs-uploader id="UploadFiles" dropArea="#drop" asyncSettings="@asyncSettings">
        </ejs-uploader>
    </div>
</div>

<script>
    window.onload = function () {
        document.getElementById('browse').onclick = () => {
            document.getElementsByClassName('e-file-select-wrap')[0].querySelector('button').click();
        };
    }
</script>
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

namespace EJ2CoreSampleBrowser.Controllers.TextBoxes
{
    public partial class UploaderController : Controller
    {
        public ActionResult DefaultFunctionalities()
        {
            return View();
        }
    }
}
.control_wrapper {
        max-width: 500px;
        margin: auto;
    }
    #dropArea {
        border: 1px dashed #c3c3cc;
        text-align: center;
        padding: 20px 0 10px;
    }

    .e-file-select-wrap {
        display: none;
    }

    .control_wrapper .e-upload .e-upload-drag-hover {
        margin: 0;
    }