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ASP.Net MVC

ASP.Net MVC Topics

QuestionAnswer
Webforms vs. MVC 1. Webforms: url = page; MVC: url=controller action. 2. Webforms: content-centric; MVC: logic centric
URL Routing routes incoming requests to controller actions
Route Table Creation Application_Start() method calls the RegisterRoutes() method and the RegisterRoutes() method creates the default route table.
default route breaks all incoming requests into three segments: controller name, action name, and a parameter passed to the action named Id.
default route default values The default Controller is HomeController, the default Action is Index, and the default Id is an empty string
controller determines what response to send back to a user when a user makes a browser request; must contain suffix -Controller
action public method on a controller
view contains HTML and markup to be sent to the browser
view location controller views must be located in \Views\[Controller Name]\[Action Name].aspx
controller requirements 1. must contain suffix -Controller, 2. must reside in \Controllers folder 3. must reference System.Web.Mvc and System.Web.Mvc.Ajax, 4. must inherit from controller class
action requirements 1. must be public, 2. cannot be overloaded, 3. cannot be shared
six action results 1. ViewResult: HTML and markup. 2. EmptyResult:no result. 3. RedirectResult: redirection to a new URL 4. RedirectToRouteResult: redirection to a new controller action 5. JsonResult: a JavaScript Object Notation 6. ContentResult – plain text.
6 result return methods View,Redirect,RedirectToAction,RedirectToRoute,Json,Content
<%= %> shortcut for Response.Write()
HTML Helper method that generates a string
ViewData property a collection of name and value pairs used to pass data from a controller to a view
Html.Encode() HTML Helper encodes special characters such as < and > into characters that are safe to display in a web page
4 web.config sections for URL Routing system.web.httpModules section, system.web.httpHandlers section, system.webserver.modules section, and system.webserver.handlers
custom route requirements custom routes should be added before default routes
2 ways to prevent Javascript injection attacks 1. Encode the view, 2. Encode the controller
HTML Encoding in View <%=Html.Encode([text])%>
HTML Encoding the Controller Server.HtmlEncode([text])
model binder allow you to map incoming form post values to complex .NET types passed as Controller action method parameters
Created by: jhlee5