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Render a Dialog without header in ASP.NET Core Dialog control

The dialog can be rendered without header by setting the header property value as empty string or null. By default, dialog is rendered without header.

tagHelper
controller.cs
<div id='container' style="height:400px;">
    <ejs-button id="targetButton" content="Open Dialog"></ejs-button>
    <ejs-dialog id="dialog" content="This is a dialog without header." target="#container" width="250px">
        <e-dialog-buttons>
            <e-dialog-dialogbutton buttonModel="@ViewBag.DialogButtons1" click="dlgButtonClick"></e-dialog-dialogbutton>
            <e-dialog-dialogbutton buttonModel="@ViewBag.DialogButtons2" click="dlgButtonClick"></e-dialog-dialogbutton>
        </e-dialog-buttons>
    </ejs-dialog>
</div>
<script>
    document.getElementById('targetButton').onclick = function () {
        var dialog = document.getElementById("dialog").ej2_instances[0];
        dialog.show();
    }
    function dlgButtonClick() {
        var dialogObj = document.getElementById('dialog').ej2_instances[0];
        dialogObj.hide();
    }
</script>
public class HomeController : Controller
{

    public class ButtonModel
    {
        public string content { get; set; }
        public bool isPrimary { get; set; }
        public string cssClass { get; set; }

    }

    public ActionResult Index()
    {
        ViewBag.DialogButtons1 = new ButtonModel() { isPrimary = true, cssClass = "e-flat", content = "OK" };
        ViewBag.DialogButtons2 = new ButtonModel() { content = "Cancel", cssClass = "e-flat" };
        return View();
    }

}