The Microsoft ASP.NET team just released the first public preview of ASP.NET MVC Version 2. You can download it here
It includes support for:
- Templated Helpers - allow you to automatically associate edit and display elements with data types. For example, a date picker UI element can be automatically rendered every time data of type System.DateTime is used. This is similar to Field Templates in ASP.NET Dynamic Data.
- Areas - provide a means of dividing a large web application into multiple projects, each of which can be developed in relative isolation. This helps developers manage the complexity of building a large application by providing a way to group related controllers and views.
- Support for Data Annotations - Data Annotations enable attaching validation logic in a central location via metadata attributes applied directly to a model class. First introduced in ASP.NET Dynamic Data, these attributes are now integrated into the default model binder and provide a metadata driven means to validating user input.
These are the big basics. However there are a number of other new teaser features in it.
- Default Parameter Values – Just what it says. The syntax is a little clunky but its a start in the write direction. In Visual Studio 2010 you’ll be able to do the same thing but with a less clunky syntax.
- Binding Binary Data - ASP.NET MVC Preview 1 adds support for binding base64-encoded string values to properties of type byte and System.Data.Linq.Binary. There are now two overloaded versions of Html.Hidden() that can take these data-types. These can be useful for scenarios where you want to enable concurrency control within your application and want to roundtrip timestamp values of database rows within your forms.