ASP.NET Core: Getting Started with ASP.NET MVC Core（一）

public void Configure(IApplicationBuilder app){
            app.UseDeveloperExceptionPage();

            app.UseMvc(m => {
                m.MapRoute(
                    name: "default",
                    template: "{controller}/{action}/{id?}",
                    defaults: new { controller = "Home", action="Index"});
            });
}

public void ConfigureServices(IServiceCollection services){
            services.AddMvc();
}

using System.Linq;
using System.Threading.Tasks;

namespace MVCCoreDemo.Models
{
    public class HeroStats
    {
        private HeroManager _manager = new HeroManager();

        public async Task<int> GetHeroCount()
        {
            return await Task.FromResult(_manager.GetAll.Count());
        }

        public async Task<int> GetHeroCountByType(string type)
        {
            return await Task.FromResult(_manager.GetHeroesByType(type).Count);
        }
    }
}

@model IEnumerable<MVCCoreDemo.Models.DOTAHero>
@inject MVCCoreDemo.Models.HeroStats Stats

<h3>My Favorite DOTA 2 Heroes</h3>
<ul>
    @foreach (var p in Model)
    {
        <li>@($"{p.Name} {p.Type}")</li>
    }
</ul>

<div>
    <h4>Stats</h4>
    <p>Number of Strength Heroes: @await Stats.GetHeroCountByType("strength")</p>
    <p>Number of Agility Heroes: @await Stats.GetHeroCountByType("agility")</p>
    <p>Number of Intelligence Heroes: @await Stats.GetHeroCountByType("intelligence")</p>
    <p>Total Heroes Heroes: @await Stats.GetHeroCount()</p>
</div>

public void ConfigureServices(IServiceCollection services){
            services.AddMvc();
            services.AddTransient<MVCCoreDemo.Models.HeroStats>();
}

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

namespace MVCCoreDemo.ViewComponents
{
    public class HeroListViewComponent: ViewComponent
    {
        public async Task<IViewComponentResult> InvokeAsync(string type){
            var heroes = await GetHeroesAsync(type);
            return View(heroes);
        }

        private Task<IEnumerable<DOTAHero>> GetHeroesAsync(string type){
            return Task.FromResult(GetHeroes(type));
        }

        private IEnumerable<DOTAHero> GetHeroes(string type){
            HeroManager HM = new HeroManager();
            return HM.GetHeroesByType(type);
        }
    }
}

@model IEnumerable<MVCCoreDemo.Models.DOTAHero>

<h3>@Model.First().Type Heroes</h3>
<ul>
    @foreach (var p in Model)
    {
        <li>@p.Name</li>
    }
</ul>

<div>
    @await Component.InvokeAsync("HeroList", new { type = "agility" })
</div>