ASP .NET MVC TreeMap Tag Helper

The jqx-treemap tag helper adds a TreeMap component to a web page.
@model IEnumerable<jQWidgets.AspNet.Core.Models.Employee>
@{
ViewData["Title"] = "ASP .NET MVC TreeMap Example";
}
@{
var employee = Model.FirstOrDefault();
}
<label>ASP .NET Core MVC Tree Map Tag Helper Example</label><br/><br/>
<jqx-treemap displayMember="FirstName" valueMember="EmployeeID" theme="@ViewData["Theme"]" width="850" source="Model"></jqx-treemap>