Expect everything to change...

Getting Data from Controller to View

1. ViewData - Assign a value with a key in the controller and read the value using the key in the View page

   public ActionResult Index()
   {
     ViewData["Message"] = "Hello, World";
     return View();
   }
   

2. ViewBag - allows an object to dynamically have properties added to it. So with a ViewBag, you can use the “.” notation.

   public ActionResult Index()
   {
     ViewBag.Message = "Hello, World";
     return View();
   }
   

3. TempData - is another dictionary for storing temporary data like the “ViewBag“ but is deleted at the end of the HTTP request

   //  marks the specified key in the dictionary for retention
   public void Keep(string key)
   // returns an object without marking the key for deletion
   public Object Peek(string key)
   

4. Strongly-Typed View Model Object – WebFormViewEngine

   <%@ Page Inherits="System.Web.Mvc.ViewPage" %>
    Product Name: <%: Model.Name %> 
   

5. Strongly-Typed View Model Object – Razor

   @model Mvc3App.Models.Product
    Product: @Model.Name 
   

Getting Data from View to Controller

1. Traditional Approach - HttpRequestBase
2. FormCollection Object
3. Action Parameters
4. Strongly type model binding to view

ActionResult() response types:

There are 11 different response types which can be sent to the end user :-

1. ViewResult - Renders a specified view to the response stream
2. PartialViewResult - Renders a specified partial view to the response stream
3. EmptyResult - An empty response is returned
4. RedirectResult - Performs an HTTP redirection to a specified URL
5. RedirectToRouteResult - Performs an HTTP redirection to a URL that is determined by the routing engine, based on given route data
6. JsonResult - Serializes a given object to JSON format
7. JavaScriptResult - Returns a piece of JavaScript code that can be executed on the client
8. ContentResult - Writes content to the response stream without requiring a view
9. FileContentResult - Returns a file to the client
10. FileStreamResult - Returns a file to the client, which is provided by a Stream
11. FilePathResult - Returns a file to the client