NEW FEATURES COME WITH ASP.NET 4.0

Like ASP.NET 3.5, ASP.NET 4.0 comes with many new features. In Mix09 there were several sessions, I haven't yet written about, about new features ASP.NET will make available in version 4.0 We'll see them but to show you the path ASP.NET has pursuit, first, which improvements ASP.NET 3.5 made:

1. Microsoft Entity Framework
2. ADO.NET Data Services
3. Dynamic Data
4. Microsoft Ajax Improvements

--Browser History
--Script Combining

Now new features of ASP.NET 4.0 in its all sub-framework:

Web Forms:

• .. tags. This is important because almost all developers use
  ..
  tags with .css files to control the layout of their pages.


• ..... Although clearly defining the layout sometimes can be very useful event crucial, in many situations developers use ListView for simple and easy situations and don't need it.


• ViewState is disabled default. ViewState is a major improvement of ASP.NET in web technologies. However many developers use it in situations that actually don't require ViewState and this results in waste of bandwidth (in big web pages, ViewState can be very big in terms of amount) So we have now for each ASP.NET control and also for Page ( Page is also a control ), "ViewStateMode=enabled,disabled,inherit" so we have more control over it.


• More control on Client IDs. ASP.NET has produce Client IDs for html output sent to the client considering layout and containers of the specific controls. This is useful because we can't control all the ids of all controls (especially for controls in data binding containers) However when we try to work on these controls, whose name is not known by us, with JavaScript problems start to arise. For example, when we refer to a control like "document.getElementByID(controlID)" we can't do anything. ASP.NET 4.0 solves this problem with (control.clientIdMode -->> legacy,static,predictable,inherit(default)). ( Static means "use the id I gave. I am responsible all errors) (Predictable means "give an id considering containers but in a more clear way)


• Description and Keyword attributes for @Page for better search engine optimization.


• Enhancements in web standards (xhtml standarts,accessibility standarts section508,wcag,aria) and checking them in VS2010.


• A new ASP.NET control, QueryExtender, makes easy to query on entities that implements IQueriable


• In ASP.NET 4.0 developers will be able to write their own custom cache providers.


• Session state compression (out-of-proc) with GZip.

ASP.NET Ajax 4.0

• New data binding features on client side by using templates like ASP.NET databinding controls.


• jquery comes as part of the visual studio 2010


• More enhanced Ajax Control Toolkit (there is also client side libraries)

ASP.NET MVC

• Comes as a separate, stand-alone framework

ASP.NET Dynamic Data

• New controls and more control for developer