vNext ViewComponent boilerplate built upon aspnet-generator's mvc sample (note: check paths in commented code)

Default.cshtml

@* Views/Home/Shared/Components/PageHeader/ *@
@using MvcSample.Web
@model PageHeader
<div class="page-header">
  <h1>Hello, @Model.FullName <small>Last visit: @Model.LastVisit</small></h1>
</div>

Index.cshtml

@* Views/Home/Index.cshtml *@
@using MvcSample.Web
@{
    Layout = "/Views/Shared/_Layout.cshtml";
    ViewBag.Title = "Home Page";
    string helloClass = null;
}

<div class="jumbotron">
    <h1>ASP.NET</h1>
    <p class="lead">ASP.NET is a free web framework for building great Web sites and Web applications using HTML, CSS and JavaScript.</p>
    <p><a href="http://asp.net" class="btn btn-primary btn-large" role="button">Learn more &raquo;</a></p>
</div>
<div class="row">
    <div class="col-lg-12">
      @await Component.InvokeAsync("PageHeader")
    </div>
</div>

PageHeaderManager.cs

using System.Threading.Tasks;
using System;

namespace MvcSample.Web
{
  public interface IPageHeaderManager
  {
    Task<PageHeader> GetPageHeaderAsync();
  }
  
  public class PageHeaderManager: IPageHeaderManager
  {
    private PageHeader pageHeader = new PageHeader
    {
      FullName = "Peter Blazejewicz",
      LastVisit = "Yesterday"
    };
    
    public Task<PageHeader> GetPageHeaderAsync()
    {
      return Task.FromResult<PageHeader>(pageHeader);
    }
  }
  
  public class PageHeader
  {
    public string FullName { get; set; }
    public string LastVisit { get; set; }
  }
}

PageHeaderViewComponent.cs

// Components/PageHeaderViewComponent.cs
using System.Threading.Tasks;
using System;
using Microsoft.AspNet.Mvc;

namespace MvcSample.Web.Components
{
  public class PageHeaderViewComponent: ViewComponent
  {
    private readonly IPageHeaderManager pageHeaderManager;
    
    public PageHeaderViewComponent(IPageHeaderManager pageHeaderManager)
    {
      if(pageHeaderManager == null) 
      {
        throw new ArgumentNullException("IPageHeaderManager");
      }
      this.pageHeaderManager = pageHeaderManager;
    }
    
    public async Task<IViewComponentResult> InvokeAsync()
    {
      var pageHeader = await pageHeaderManager.GetPageHeaderAsync();            
      return View(pageHeader);
    }
  }
}

Startup.cs

using Microsoft.AspNet.Builder;
using Microsoft.AspNet.Routing;
using Microsoft.Framework.DependencyInjection;

namespace MvcSample.Web
{
    public class Startup
    {
        public void Configure(IApplicationBuilder app)
        {
            app.UseStaticFiles();

            app.UseServices(services =>
            {
                services.AddMvc();
                services.AddScoped<IPageHeaderManager, PageHeaderManager>();
            });

            // Add MVC to the request pipeline
            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller}/{action}/{id?}",
                    defaults: new { controller = "Home", action = "Index" });

                routes.MapRoute(
                    name: "api",
                    template: "{controller}/{id?}");
            });
        }
    }
}