Embed Size (px)
Citation preview
ASP.NET MVC:
CONTROLLERS & VIEWS
Jess ChadwickLead Code MonkeyInfragistics Website Team
Todd SnyderDevelopment Team Lead
Infragistics Experience Design Group
Model – View - Controller
Model
Controlle
rView
Controller – The Traffic Cop
Handles User Input Interacts with Model/Data Select View to Render
Controllers MVC - WebForm
ASP.NET Page Lifecycle
Request FlowRequest
Controllers – Page Routing
Controllers – Actions
Controllers – Defining Actions
Controllers – Parameters
RouteData: Contains Name/Value Pairs Form, Query String, and/or Cookie Missing Reference/Nullable Types set to null
Nullable optional parameters
Base class: Request and Response Methods
Controllers – Action Results
ViewResult
RedirectResult
RedirectToRouteResult
ContentResult
JsonResult
EmptyResult
Controllers – Attributes
PrincipalPermission
NonAction
ActionFilter
Controllers – Action Filters
Attach additional behaviors to actions Before & After Action Execution Before & After Result Execution
Useful for logging, compression, etc.
Controllers – Unit Testing
Testing Controller Actions
No requirement to test within ASP.NET runtime! Use RhinoMocks, TypeMock, Moq, etc. Create Test versions of the parts of the runtime you want
to stub
[TestMethod]public void ShowPostsDisplayPostView() { TestPostRepository rep = new TestPostRepository();
BlogController controller = new BlogController(rep); var result = controller.ShowPost(2);
Assert.AreEqual("showpost", result.ViewName); Assert.IsTrue(repository.GetPostByIdWasCalled); Assert.AreEqual(2, repository.LastRequestedPostId);}
ASP.NET MVC: Views
Model – View - Controller
Model
ControllerView
Views – What are they?
Render output
Usually pretty “stupid”
It’s all about the “ViewData”
Views - Working with Data
Views - Strongly-Typed Data
Inherits ViewPage<TModel>
DEMO: Strongly-Typed View
Views - Weakly-Typed Data
Inherits ViewPage
DEMO: Weakly-Typed View
“I can see!”
View Engines
View Engines - Definition
Figure out how to render the markup View Locator finds the template
Pluggable Web Forms, Nvelocity, Brail, Nhaml, etc.
Roll your own Implement IViewEngine
View Engines - WebFormViewEngine
Default engine based on Web Forms markup
Familiar Environment Layout: .master Content: .aspx User Controls: .ascx
View Engines - WebFormViewLocator
Standard, default layout:/Views
/{Controller Name}/*.aspx/*.ascx
/Shared/*.master/*.aspx/*.ascx
Think of them as your personal assistants.
UI Helpers
Why do we need UI Helpers?
More control = less done for you Avoid writing “boring” markup Encapsulate what varies Replace Web Forms server controls
Extension Methods Revisited
New .NET 3.0 feature Static Methods posing as built-in behavior Make your life a whole lot easier
Allow easy extensibility!
UI Helpers - Common/Useful Helpers
Form Helpers Url/Link/Content Helpers
Html.Hidden() Html.TextBox() Html.TextArea() Html.RadioButton() Html.RadioButtonList() Html.DropDownList()
method(name, value, attributes)
Html.ActionLink<T>() Html.RouteLink() Html.Encode() Html.AttributeEncode() Url.Action() Url.RouteUrl() Url.Encode(contentPath) Url.Content(contentPath)
No, not <form runat=“server”>…
Back to basics!
DEMO: Working with Forms
Rendering Components
User Controls Extension Methods
Html.RenderUserControl(virtualPath) Html.RenderUserControl(virtualPath, data)
Server Controls Traditional Web Forms style!
Third-Party Controls
DEMO: Create and use a user control
Enriching the Client Experience
ASP.NET AJAX?
Nope!
Filling the Gap
Roll your own Popular Frameworks
jQuery prototype JavaScriptMVC Rico script.aculo.us ASP.NET AJAX (client library)
DEMO: MVC & ASP.NET AJAX
Q & A(thanks!)
Jess ChadwickEmail: [email protected] Blog: http://blog.jesschadwick.com
Todd SnyderEmail: [email protected] Blog: http://blogs.infragistics.com/blogs/tsnyder
The Bits ASP.NET MVC Preview 3: http://asp.net/MVCASP.NET MVC Source Code: http://www.codeplex.com/aspnet
Quickstart http://quickstarts.asp.net/3-5-extensions/mvc/default.aspx
Videos ASP.NET: http://www.asp.net/learn/3.5-extensions-videos/ MIX: http://sessions.visitmix.com
Community/Blogs ASP.NET Forums: http://forums.asp.net/1146.aspx Scott Guthrie (ScottGu): http://weblogs.asp.net/scottgu/ Scott Hanselman: http://www.hanselman.com/blog/ Phil Haack: http://haacked.com/
Sample Apps MVC Samples: http://www.codeplex.com/mvcsamples CodeCampServer: http://codecampserver.org
Jess Chadwick
http://blog.jesschadwick.com
Todd Snyder
http://blogs.infragistics.com/blogs/tsnyder
Resources
