System.ComponentModel.DataAnnotations Namespace

.NET Framework (current version)
Visual Studio 2010
.NET Framework 4
Silverlight
WCF RIA Services
.NET Framework 3.5
Visual Studio 2008

[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

The System.ComponentModel.DataAnnotations namespace provides attribute classes that are used to define metadata for ASP.NET MVC and ASP.NET data controls.

Classes

	Class	Description
	RoundtripOriginalAttribute	When applied to a member, this attribute indicates that the original value of the member should be sent back to the server when the object is updated. When applied to a class, the attribute gets applied to each member of that class.