ASP.NET Dynamic Data

ASP.NET Dynamic Data Introduction

Many definition about ASP.NET Dynamic Data.

ASP.NET Dynamic Data is a web application scaffolding framework from Microsoft, shipped as an extension to ASP.NET, that can be used to build data driven web applications. It exposes tables in a database by encoding it in the URI of the ASP.NET web service, and the data in the table is automatically rendered to HTML. The process of rendering can be controlled using custom design templates. Internally, it discovers the database schema by using the database metadata.

ASP.NET Dynamic Data is a framework that lets you create data-driven ASP.NET Web applications easily. It does this by automatically discovering data-model metadata at run time and deriving UI behavior from it. A scaffolding framework provides a functional Web site for viewing and editing data. You can easily customize the scaffolding framework by changing elements or creating new ones to override the default behavior. Existing applications can easily integrate scaffolding elements with ASP.NET pages.

That definition was take from msdn.microsoft.com and wikipedia.org for comparison. So, what are the definition from ASP.NET Dynamic Data. ASP.NET Dynamic data is new controls for DetailsView, FormView, GridView, or ListView controls along with a lot of meta-infrastructure classes to make it possible. The design uses convention over configuration in a number of places, and this marks, IMHO, the recognition of a simpler way to do things.

ASP.NET Dynamic Data brings major usability and RAD development changes to the existing ASP.NET data controls. RAD development is significantly increased by the use of a rich scaffolding framework. After you add a LINQ to SQL or Entity Framework data model to a project, you can simply register it with Dynamic Data. The result is a fully functional Web site. Full CRUD (create, read, update, and delete) operations are supported. The site includes filtering by foreign keys and Boolean fields; foreign keys are automatically converted to their friendly names. Smart validation is automatically available, which provides validation based on database constraints for nullable fields, data type, and field length.

ASP.NET Dynamic Data Features:

• The ability to render data by defining templates, either at the page-level (for example, to define default renderings for list, details, edit, and insert pages) or the field-level (for example, to define default renderings for different data field types or foreign key relationships). This feature allows you to update data templates in a single location, which will take effect across your entire site for the various objects/schema in your data model.


• The ability to specify metadata on the data model that defines custom validation rules or display hints. The metadata that you define on the model results in custom behavior for performing rendering (for example, which field template to use on a given column/property) as well as custom validation logic in your Website UI and also when the data model is used programmatically from code.


• Support for more data access layers - ADO.NET Data Services (formerly Astoria);
  Custom Business Logic Layer


• Field Templates - URL, E-mail, and Enumeration


• Entity Templates - Automatic tempalates for ListView, FormView; Template based on entity instead of field


• Inheritance Support (EF and Linq2SQL)


• QueryBlock - Rich Declarative Linq Expressions


• Rich Filtering - Attributes and templates


• MVC Support
  

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