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The MVC Framework supports organizing a Web application into areas, where each area represents a functional segment of the application, such as administration, billing, customer support, and so on. This is useful in a large project, where having a single set of folders for all of the controllers, views, and models, and it can become difficult to manage. Each MVC area has its own folder structure, allowing you to keep everything separate. This makes it more obvious which project elements relate to each functional area of the application, helping multiple developers to work on the project without colliding with one another. Areas are supported largely through the routing system, which is why I have chosen to cover this feature alongside URLs and routes. In this section, I will show you how to set up and use areas in your MVC projects. Creating an Area To add an area to the example MVC application, right-click the UrlsAndRoutes project item in the Solution Explorer window and select Add Area from the pop-up menu. Visual Studio will prompt you for the name of the area, as shown in Figure 16-6. In this case, I have specified an area called Admin. This is a pretty common area to create, because many Web applications need to separate the customer-facing and administration functions. Click the Add button to create the area. Figure 16-6. Adding an area to an MVC application After you click Add, Visual Studio will add an Areas folder to the project. This contains a folder called Admin, which represents the area that I just created. If I were to create additional areas, other folders would be created here. Inside the Areas/Admin folder, you will see a mini-MVC project. There are folders called Controllers, Models, and Views. The first two are empty, but the Views folder contains a Shared folder (and a web.config file that configures the view engine, but I am not interested in the view engine until Chapter 20). The Areas folder also contains a file called AdminAreaRegistration.cs, which defines the AdminAreaRegistration class, as shown in Listing 16-24. Listing 16-24. The Contents of the AdminAreaRegistration.cs File using System.Web.Mvc; namespace UrlsAndRoutes.Areas.Admin { public class AdminAreaRegistration : AreaRegistration { public override string AreaName { get { return "Admin"; } } { public override void RegisterArea(AreaRegistrationContext context) context.MapRoute( "Admin_default", "Admin/{controller}/{action}/{id}", 420
} } } ); new { action = "Index", id = UrlParameter.Optional } The interesting part of this class is the RegisterArea method. As you can see from the listing, this method registers a route with the URL pattern Admin/{controller}/{action}/{id}. I can define additional routes in this method, which will be unique to this area. Caution If you assign names to your routes, you must ensure that they are unique across the entire application and not just the area for which they are intended. I do not need to take any action to make sure that this registration method is called. Visual Studio added a statement to the Global.asax file that takes care of setting up areas when it created the project, which you can see in Listing 16-25. Listing 16-25. Area Registration Setup in the Global.asax File using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using System.Web.Routing; namespace UrlsAndRoutes { public class MvcApplication : System.Web.HttpApplication { protected void Application_Start() { AreaRegistration.RegisterAllAreas(); RouteConfig.RegisterRoutes(RouteTable.Routes); } } } The call to the static AreaRegistration.RegisterAllAreas method causes the MVC Framework to go through all of the classes in the application, find those that are derived from the AreaRegistration class and call the RegisterArea method on each of them. Caution Do not change the order of the statements related to routing in the Application_Start method. If you call RegisterRoutes before AreaRegistration.RegisterAllAreas is called, then your routes will be defined before the area routes. Given that routes are evaluated in order, this will mean that requests for area controllers are likely to be matched against the wrong routes. The AreaRegistrationContext class that is passed to each area’s RegisterArea method exposes a set of MapRoute methods that the area can use to register routes in the same way as your main application does in the RegisterRoutes method of Global.asax. Note The MapRoute methods in the AreaRegistrationContext class automatically limit the routes you register to the namespace that contains the controllers for the area. This means that when you create a controller in an area, you must leave it in its default namespace; otherwise, the routing system will not be able to find it. Populating an Area You can create controllers, views, and models in an area just as you have seen in previous examples. To create a controller, rightclick the Controllers folder within the Admin area and select Add Controller from the pop-up menu. Select MVC 5 Controller – Empty from the list of options, click the Add button, set the controller name and click the Add button to create the new controller class. 421
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Pro ASP.NET MVC 5 Adam Freeman 2
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Dedicated to my lovely wife, Jacqui
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Contents About the Author About the
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Preparing the Example Project Defin
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Chapter 9: SportsStore: Completing
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Constraining Routes Constraining a
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Using Other Filter Features Filteri
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Creating the Ajax Form Understandin
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Index 18
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About the Technical Reviewer Fabio
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What Is Wrong with ASP.NET Web Form
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storage and querying language for s
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There are some good reasons for car
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Where Can I Get the Example Code? Y
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Figure 2-1. The Visual Studio ASP.N
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Figure 2-3. The initial file and fo
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Figure 2-6. Adding a controller to
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} } } return View(); A good way of
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Figure 2-9. The MVC Framework tryin
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Visual Studio will create a file ca
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Afternoon"; } } } return View(); I
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Figure 2-14. Adding to the view HTM
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public class HomeController : Contr
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} Will you attend? @Html.DropDown
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Figure 2-18. Setting the default st
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type without needing to qualify the
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[Required(ErrorMessage = "Please en
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Figure 2-21. The validation summary
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Tip You can drag JavaScript and CSS
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expect files to be in certain locat
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RSVP @using (Html.BeginForm()) {
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Thanks body { background-colo
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CHAPTER 3 The MVC Pattern Before I
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ASP.NET MVC doesn’t apply any con
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as thinly disguised Smart UI applic
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this case PasswordResetHelper. I do
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Web server and database. Integratio
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public class AdminControllerTests {
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The drawback of TDD is that it requ
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} } } return "Navigate to a URL to
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namespace LanguageFeatures.Controll
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} set { name = value; } } } public
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The listing demonstrates how to con
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using System.Collections; using Sys
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using System.Collections.Generic; n
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public static IEnumerable FilterByC
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Products = new List { new Product {
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... In this example, myAnonType is
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public string Index() { return "Nav
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Max Min Returns the largest or smal
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usiness while the background work i
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natural syntax, but they do not cha
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} Defining the Controller I am goin
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Note Notice that I declare the view
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Figure 5-4. Creating a new layout S
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Figure 5-5. The Effect of Applying
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Figure 5-6. Adding a view that reli
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Figure 5-9. The content in the layo
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public ActionResult DemoExpression(
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The containing element has data at
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Price@Model.Price Stock Level @sw
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} else { @ViewBag.ProductCount }
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Figure 5-13. Generating elements us
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CHAPTER 6 Essential Tools for MVC I
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LinqValueCalculator to determine th
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In the sections that follow, I expl
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just fine with MVC 5. I have used t
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namespace EssentialTools.Infrastruc
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Figure 6-2. The effect of running t
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I can configure the objects that Ni
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} } The FlexibleDiscountHelper clas
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public object GetService(Type servi
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Figure 6-4. Creating the unit test
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} } } // assert Assert.AreEqual(tot
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wrong"); wrong"); wrong"); } Assert
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} } } Testing and Fixing the Code I
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Listing 6-31. The Contents of the L
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Price = 48.95M}, new Product {Name
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To summarize the example, the Objec
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This is the same behavior used in t
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CHAPTER 7 SportsStore: A Real Appli
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e included in new projects are exce
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public class NinjectDependencyResol
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Figure 7-4. Creating the Product cl
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IProductRepository interface with t
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Figure 7-5. Adding the Views/Produc
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Figure 7-6. Viewing the basic appli
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Figure 7-8. Setting up the SportsSt
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Visual Studio will display a design
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Creating the Entity Framework Conte
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private EFDbContext context = new E
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public class ProductController : Co
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A view model is not part of the dom
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... ... Every namespac
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(ProductsListViewModel)controller.L
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Figure 7-14. Displaying page naviga
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Figure 7-15. The new URL scheme dis
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} @foreach (var p in Model.Products
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Figure 7-18. Creating a partial vie
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Summary In this chapter, I built mo
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using System.Collections.Generic; u
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Assert.AreEqual(pageInfo.TotalPages
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); "", new { controller = "Product"
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} } public string Menu() { return "
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has the effect of declaring a depen
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Figure 8-3. The category links High
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Now that I am providing information
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} ... CurrentCategory = category };
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Continue Shopping button to return
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Arrange - create a new cart Cart ta
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@Model.Name @Model.Price.ToString("
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For the AddToCart and RemoveFromCar
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and the total cost for the cart. Th
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CHAPTER 9 SportsStore: Completing t
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using System.Linq; using System.Web
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public void Adding_Product_To_Cart_
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shopping I added a new column to e
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@ViewBag.Title SPORTS STORE @
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. . . This change generates a link
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@Html.TextBoxFor(x => x.Zip, new {@
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} ViewBag.Title = "SportStore: Chec
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public string Country { get; set; }
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if (emailSettings.WriteAsFile) { sm
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} } } I created an EmailSettings ob
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ViewResult result = target.Checkout
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of the SportsStore.WebUI project an
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Thanks! Thanks for placing your ord
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Figure 10-1. Displaying the SportsS
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waking moment. My advice is to acce
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case, however, I hide the standard
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Bootstrap that the div element shou
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.Select(x => x.Category) .Distinct(
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@Html.ActionLink("Home", "List", "
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variations on the same basic theme.
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} This view uses a Razor foreach
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Figure 10-9. The effect of mobile-s
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public class AdminController : Cont
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Right-click on the Views/Admin fold
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Figure 11-3. Rendering the scaffold
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Figure 11-4. Rendering the modified
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Act Product p1 = target.Edit(1).Vie
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} } public string Category { get; s
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Figure 11-7. Displaying the editor
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Framework does know about and updat
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ActionResult result = target.Edit(p
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using System.ComponentModel.DataAnn
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Install-Package Microsoft.jQuery.Un
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Listing 11-17. Explicitly Specifyin
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Listing 11-19. Implementing Deletio
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You can see the delete feature by c
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Authentication is set
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Figure 12-1. The effect of the Auth
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namespace SportsStore.WebUI.Infrast
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the menu, set the name to Login and
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mock implementations of the IAuthPr
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Figure 12-3. Adding columns to the
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No Image } else { } @Html.Acti
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} } I have added a new parameter to
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[TestClass] public class ImageTests
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Figure 12-4. Adding an image to a p
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CHAPTER 13 Deployment The final, an
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Figure 13-2. Creating a new web sit
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Figure 13-4. The effect of creating
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); [ProductID] INT IDENTITY (1, 1)
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Figure 13-8. The Publish Web dialog
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Figure 13-10. Settings for the depl
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Figure 13-12. Previewing the deploy
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Figure 13-14. The SportsStore appli
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Figure 14-1. Selecting the project
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which packages are used by selectin
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} Or you can disable any layout for
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using System.Web.Mvc; namespace Deb
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If the debug attribute in the Web.c
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Figure 14-9. Hitting a breakpoint N
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Figure 14-11. The effect of assigni
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selecting Delete Breakpoint from th
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Figure 14-15. Enabling Edit and Con
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Figure 14-16. The effect of correct
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Figure 14-18. Selecting multiple br
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CHAPTER 15 URL Routing Before the i
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public class HomeController : Contr
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Figure 15-3. The segments in an exa
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started, which leads to the RouteCo
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namespace UrlsAndRoutes.Tests { [Te
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Page 372 and 373: Figure 15-5. Using default values t
Page 374 and 375: In Listing 15-12, I defined a new r
Page 376 and 377: Notice that, once again, I have pla
Page 378 and 379: Figure 15-8. Displaying the value o
Page 380 and 381: namespace UrlsAndRoutes { public cl
Page 382 and 383: ... [TestMethod] public void TestIn
Page 384 and 385: Figure 15-11. The error displayed w
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Page 392 and 393: namespace UrlsAndRoutes.Infrastruct
Page 394 and 395: Using Attribute Routing All of the
Page 396 and 397: Caution The Route attribute stops c
Page 398 and 399: } } public ActionResult List() { Vi
Page 400 and 401: ... [Route("∼/Test")] ... Prefixi
Page 402 and 403: using System.Web.Routing; namespace
Page 404 and 405: Now, this may seem like a long path
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Page 408 and 409: ... Start the application again and
Page 410 and 411: ActionName The controller is: @Vi
Page 412 and 413: } For the routing in the example ap
Page 414 and 415: how outgoing URLs are generated. To
Page 416 and 417: and repeat the process. If the clas
Page 418 and 419: ActionName The controller is: @
Page 422 and 423: To demonstrate the way that areas i
Page 424 and 425: able to request /Admin/Home/Index a
Page 426 and 427: You do not need to take any special
Page 428 and 429: intercept requests for disk files b
Page 430 and 431: outes.Add(new Route("SayHello", new
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Page 434 and 435: CHAPTER 17 Controllers and Actions
Page 436 and 437: System.Web.Routing.RequestContext o
Page 438 and 439: namespace ControllersAndActions.Con
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Page 442 and 443: After a controller has finished pro
Page 444 and 445: public string Url { get; set; } pub
Page 446 and 447: RedirectToRouteResult Issues an HTT
Page 448 and 449: shown in this test method. using Sy
Page 450 and 451: You can send an object to the view
Page 452 and 453: Arrange - create the controller Exa
Page 454 and 455: Listing 17-20. Redirecting to a Lit
Page 456 and 457: Act - call the action method Redire
Page 458 and 459: Listing 17-24. Sending a Specific S
Page 460 and 461: CHAPTER 18 Filters Filters inject e
Page 462 and 463: } } To create the view that will ga
Page 464 and 465: } } public ViewResult Create() { //
Page 466 and 467: } } void OnAuthorization(Authorizat
Page 468 and 469: Figure 18-2. Re-prompting for crede
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[HttpPost] public ActionResult Logi
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} } public void OnAuthenticationCha
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using System.Web.Mvc; using System.
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IExceptionFilter { public void OnEx
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Figure 18-3. The default exception
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} } } } filterContext.ExceptionHand
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Figure 18-6. An exception thrown wh
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Table 18-9. HandleErrorInfo Propert
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using System.Web.Mvc; using Filters
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", } } } } string.Format("Action me
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execute the result. You can see how
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Figure 18-10. The effect of adding
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up manually with the Empty template
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I have already explained that filte
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Figure 18-14. Specifying the order
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Figure 18-15. The default filter be
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CHAPTER 19 Controller Extensibility
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} } } public ViewResult List() { re
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} public GetControllerSessionBehavi
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My implementations of the GetContro
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RouteConfig.RegisterRoutes(RouteTab
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} } You can see the effect of the c
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There are no action methods in this
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Figure 19-6. Using the method name
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[ActionName("Enumerate")] public Vi
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} } } }); I have used the ActionNam
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If you start the application and na
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Message: @Session["Message"] ... Th
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Data: @Model When you run the ap
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namespace ControllerExtensibility.C
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string viewName, string masterName,
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ModelState Returns information abou
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view) { } } public void ReleaseView
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Figure 20-2. Requesting an unsuppor
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Listing 20-10. The Contents of the
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Table 20-4. Razor View Engine Searc
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Figure 20-5. The effect of custom l
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Tip My custom view engine locations
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You can check to see if a view has
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I am going to start by creating a p
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@foreach (string str in Model) { @s
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"Pear"}) @Html.Action("Time") You c
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} In the Index action method, I pas
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Here is the message: @Model Inli
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Table 21-3. Useful Properties Defin
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troublesome string to the view as t
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Figure 21-3. Comparing how data val
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Figure 21-5. The effect of selectiv
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@model HelperMethods.Models.Person
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Note Using the helper methods to g
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Layout = "/Views/Shared/_Layout.csh
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} This produces the following form
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... Generating the Input Element fr
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} CreatePerson @using(Html.BeginRou
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CreatePerson label { display: i
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} public class Address { public str
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@{ ViewBag.Title = "CreatePerson";
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Notice that the elements for the Pe
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} return View((object)message); } }
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01/01/0001 00:00:00 Although the
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.editor-field input { height: 20px;
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The value of the property (0 in thi
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[Display(Name = "Birth Date")] publ
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Url Displays the data as a URL (usi
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} public string LastName { get; set
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Figure 22-10. Displaying a complex
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Views/Shared/EditorTemplates folder
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CHAPTER 23 URL and Ajax Helper Meth
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.editor-label { clear: left; } .edi
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action="GetPeople"}) This view co
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Figure 23-2. A simple synchronous f
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I am now ready to start applying un
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as shown in Listing 23-10. Listing
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Setting Ajax Options I can fine-tun
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ViewBag.Title = "GetPeople"; Layout
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Figure 23-6. Prompting the user bef
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I can address this using the AjaxOp
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ole}), } }) Url = Url.Action("Get
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Since I want to present the same da
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Figure 23-9. Working with JSON data
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using System; using System.Collecti
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@foreach (string role in Enum.GetNa
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public class Address { public strin
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Figure 24-1. A simple demonstration
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for the id parameter as follows: 1.
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Figure 24-4. The effect of using a
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This view renders a simple set of l
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Role:@Html.DisplayFor(m => m.Role)
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} Submit You can see the problem if
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using System.Web.Mvc; using MvcMode
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Listing 24-24. Using a Collection A
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... When the form is submitted, th
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Each of the classes listed in Table
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} } } if (ContainsPrefix(key)) { re
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Figure 24-10. The effect of the cus
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using System.Web; using System.Web.
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CHAPTER 25 Model Validation In the
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@ViewBag.Title .field-validati
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Listing 25-7. Explicitly Validating
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Figure 25-2. Errors result in highl
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... Please enter your name Please
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Figure 25-4. Displaying validation
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Figure 25-6. A validation message f
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RegularExpression Required [Require
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Figure 25-8. The error message from
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} } [MustBeTrue(ErrorMessage="You m
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name")); } if (DateTime.Now > Date)
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Both of these settings must be true
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The feedback is also immediate when
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} public JsonResult ValidateDate(st
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has provided is consistent with the
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namespace ClientFeatures.Models { p
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} function processResponse(appt) {
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Figure 26-2. Disabling the browser
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undles.Add(new StyleBundle("∼/Con
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... You won’t need to do this i
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Figure 26-4. Profiling with bundles
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CHAPTER 27 Web API and Single-page
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ReservationRepository.cs to the Mod
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} return RedirectToAction("Index");
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The view model for the partial vie
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elated actions, and makes creating
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This time, the Web API controller h
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using System.Collections.Generic; u
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}; function sendAjaxRequest(httpMet
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Underpinning the Ajax functions is
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Figure 27-3. Monitoring the connect
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... function removeItem(item) { sen
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Client Name Location Save }
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Simplify the Home Controller The Ho
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Remove Create Create Rese
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Index A Account Controller contents
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BeginForm and BeginRoute Form metho
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Custom dependency resolver contents
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table data script button SQL statem
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uilt-In form (see Built-in form hel
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Razor expression shared View Start
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PartyInvites routing system Solutio
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O OnActionExecuted method action fi
Page 748 and 749:
accessing ways context objects acti
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summary, cart definition cart and c
Page 752 and 753:
whole-model templated helpers Test-
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