o_19mgorv9t13a3ko71fev19l81mqa.pdf

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Figure 2-18. Setting the default start URL for the project You can see the form in the RsvpForm view when you run the application and click the RSVP Now link. Figure 2-19 shows the result. Figure 2-19. The RspvForm view Handling Forms I have not yet told MVC what I want to do when the form is posted to the server. As things stand, clicking the Submit RSVP button just clears any values you have entered into the form. That is because the form posts back to the RsvpForm action method in the Home controller, which just tells MVC to render the view again. 50
Note You might be surprised that the input data is lost when the view is rendered again. If so, you have probably been developing applications with ASP.NET Web Forms, which automatically preserves data in this situation. I will show you how to achieve the same effect with MVC shortly. To receive and process submitted form data, I am going to use a clever feature. I will add a second RsvpForm action method in order to create the following: A method that responds to HTTP GET requests: A GET request is what a browser issues normally each time someone clicks a link. This version of the action will be responsible for displaying the initial blank form when someone first visits /Home/RsvpForm. A method that responds to HTTP POST requests: By default, forms rendered using Html.BeginForm() are submitted by the browser as a POST request. This version of the action will be responsible for receiving submitted data and deciding what to do with it. Handing GET and POST requests in separate C# methods helps to keep my controller code tidy, since the two methods have different responsibilities. Both action methods are invoked by the same URL, but MVC makes sure that the appropriate method is called, based on whether I am dealing with a GET or POST request. Listing 2-14 shows the changes I applied to the HomeController class. Listing 2-14. Adding an Action Method to Support POST Requests in the HomeController.cs File using System; using System.Collections.Generic; using System.Linq; using System.Web; using System.Web.Mvc; using PartyInvites.Models; namespace PartyInvites.Controllers { public class HomeController : Controller { public ViewResult Index() { int hour = DateTime.Now.Hour; ViewBag.Greeting = hour < 12 ? "Good Morning" : "Good Afternoon"; return View(); } [HttpGet] public ViewResult RsvpForm() { return View(); } } } [HttpPost] public ViewResult RsvpForm(GuestResponse guestResponse) { // TODO: Email response to the party organizer return View("Thanks", guestResponse); } I have added the HttpGet attribute to my existing RsvpForm action method. This tells MVC that this method should be used only for GET requests. I then added an overloaded version of RsvpForm, which takes a GuestResponse parameter and applies the HttpPost attribute. The attribute tells MVC that the new method will deal with POST requests. I also imported the PartyInvites.Models namespace—this is just so I can refer to the GuestResponse model 51
Page 2 and 3: Pro ASP.NET MVC 5 Adam Freeman 2
Page 4 and 5: Dedicated to my lovely wife, Jacqui
Page 6 and 7: Contents About the Author About the
Page 8 and 9: Preparing the Example Project Defin
Page 10 and 11: Chapter 9: SportsStore: Completing
Page 12 and 13: Constraining Routes Constraining a
Page 14 and 15: Using Other Filter Features Filteri
Page 16 and 17: Creating the Ajax Form Understandin
Page 18 and 19: Index 18
Page 20 and 21: About the Technical Reviewer Fabio
Page 22 and 23: What Is Wrong with ASP.NET Web Form
Page 24 and 25: storage and querying language for s
Page 26 and 27: There are some good reasons for car
Page 28 and 29: Where Can I Get the Example Code? Y
Page 30 and 31: Figure 2-1. The Visual Studio ASP.N
Page 32 and 33: Figure 2-3. The initial file and fo
Page 34 and 35: Figure 2-6. Adding a controller to
Page 36 and 37: } } } return View(); A good way of
Page 38 and 39: Figure 2-9. The MVC Framework tryin
Page 40 and 41: Visual Studio will create a file ca
Page 42 and 43: Afternoon"; } } } return View(); I
Page 44 and 45: Figure 2-14. Adding to the view HTM
Page 46 and 47: public class HomeController : Contr
Page 48 and 49: } Will you attend? @Html.DropDown
Page 52 and 53: type without needing to qualify the
Page 54 and 55: [Required(ErrorMessage = "Please en
Page 56 and 57: Figure 2-21. The validation summary
Page 58 and 59: Tip You can drag JavaScript and CSS
Page 60 and 61: expect files to be in certain locat
Page 62 and 63: RSVP @using (Html.BeginForm()) {
Page 64 and 65: Thanks body { background-colo
Page 66 and 67: CHAPTER 3 The MVC Pattern Before I
Page 68 and 69: ASP.NET MVC doesn’t apply any con
Page 70 and 71: as thinly disguised Smart UI applic
Page 72 and 73: this case PasswordResetHelper. I do
Page 74 and 75: Web server and database. Integratio
Page 76 and 77: public class AdminControllerTests {
Page 78 and 79: The drawback of TDD is that it requ
Page 80 and 81: } } } return "Navigate to a URL to
Page 82 and 83: namespace LanguageFeatures.Controll
Page 84 and 85: } set { name = value; } } } public
Page 86 and 87: The listing demonstrates how to con
Page 88 and 89: using System.Collections; using Sys
Page 90 and 91: using System.Collections.Generic; n
Page 92 and 93: public static IEnumerable FilterByC
Page 94 and 95: Products = new List { new Product {
Page 96 and 97: ... In this example, myAnonType is
Page 98 and 99: public string Index() { return "Nav
Page 100 and 101:
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
Page 110 and 111:
Figure 5-4. Creating a new layout S
Page 112 and 113:
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
Page 128 and 129:
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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TestRouteMatch and TestRouteFail co
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Figure 15-5. Using default values t
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In Listing 15-12, I defined a new r
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Notice that, once again, I have pla
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Figure 15-8. Displaying the value o
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namespace UrlsAndRoutes { public cl
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... [TestMethod] public void TestIn
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Figure 15-11. The error displayed w
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"Home/{action}/{id}/{*catchall}", n
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Page 390 and 391:
Page 392 and 393:
namespace UrlsAndRoutes.Infrastruct
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Using Attribute Routing All of the
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Caution The Route attribute stops c
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} } public ActionResult List() { Vi
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... [Route("∼/Test")] ... Prefixi
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using System.Web.Routing; namespace
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Now, this may seem like a long path
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"Admin") @Html.ActionLink("This
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... Start the application again and
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ActionName The controller is: @Vi
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} For the routing in the example ap
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how outgoing URLs are generated. To
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and repeat the process. If the clas
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ActionName The controller is: @
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The MVC Framework supports organizi
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To demonstrate the way that areas i
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able to request /Admin/Home/Index a
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You do not need to take any special
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intercept requests for disk files b
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outes.Add(new Route("SayHello", new
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http://www.amazon.com/books/pro-asp
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CHAPTER 17 Controllers and Actions
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System.Web.Routing.RequestContext o
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namespace ControllersAndActions.Con
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Retrieve posted data from Request.F
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After a controller has finished pro
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public string Url { get; set; } pub
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RedirectToRouteResult Issues an HTT
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shown in this test method. using Sy
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You can send an object to the view
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Arrange - create the controller Exa
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Listing 17-20. Redirecting to a Lit
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Act - call the action method Redire
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Listing 17-24. Sending a Specific S
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CHAPTER 18 Filters Filters inject e
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} } To create the view that will ga
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} } public ViewResult Create() { //
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} } void OnAuthorization(Authorizat
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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
Page 508 and 509:
My implementations of the GetContro
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RouteConfig.RegisterRoutes(RouteTab
Page 512 and 513:
} } You can see the effect of the c
Page 514 and 515:
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
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accessing ways context objects acti
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summary, cart definition cart and c
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whole-model templated helpers Test-
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