• 这一节介绍Options方法，继续在OptionsBindSample项目下。
• 在项目中添加一个Controllers文件夹，文件夹添加一个HomeController控制器
• HomeController.cs
• 1         private readonly Class _myClass; 2  3         public HomeController(IOptions
         
           classAccesser)//IOptions的方法注入 4         { 5             this._myClass = classAccesser.Value; 6         }  7  8         public IActionResult Index() 9         {10             return View(_myClass);11         }
         

   

• 在项目中添加一个Views文件夹，文件夹中添加一个Home文件夹（这和ASP.NET MVC一样）,Home文件夹下添加一个Index.cshtml
• 1 @model OptionsBindSample.Class 2  3 @{ 4     ViewData["Title"] = "Index"; 5 } 6  7 
  Index
   8  9 
         
          10     @foreach(var stu in Model.Students)11     {12         
          Name:@stu.Name13         
          Age:@stu.Age14 15     }16 
         

   

• 此时StartUp.cs应该改成这样
• 1         public IConfiguration Configuration { get; set; } 2  3         public Startup(IConfiguration configuration) 4         { 5             this.Configuration = configuration; 6         } 7  8         // This method gets called by the runtime. Use this method to add services to the container. 9         // For more information on how to configure your application, visit https://go.microsoft.com/fwlink/?LinkID=39894010         public void ConfigureServices(IServiceCollection services)11         {12             services.Configure
         
          (Configuration);13 14             services.AddMvc();15         }16 17         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.18         public void Configure(IApplicationBuilder app, IHostingEnvironment env)19         {20             if (env.IsDevelopment())21             {22                 app.UseDeveloperExceptionPage();23             }24 25             app.UseMvcWithDefaultRoute();26         }
         

   

也可以不用在Controller中依赖注入，而在视图中注入，改成如下：

HomeController.cs

1         public IActionResult Index()2         {
    3             return View();4         }

Index.cshtml:

1 @using Microsoft.Extensions.Options 2 @inject IOptions
     
       ClassAccesser 3 @{ 4     ViewData["Title"] = "Index"; 5 } 6 
      
Index
 7  8 
      
        9     @foreach(var stu in ClassAccesser.Value.Students)10     {11         
       Name:@stu.Name12         
       Age:@stu.Age13 14     }15