.NET Framework Class Library
TimestampAttribute Class

Specifies the data type of the column as a row version.

Inheritance Hierarchy
SystemObject
   SystemAttribute
    System.ComponentModel.DataAnnotationsTimestampAttribute

Namespace:   System.ComponentModel.DataAnnotations
Assembly:  System.ComponentModel.DataAnnotations (in System.ComponentModel.DataAnnotations.dll)
Syntax
<[%$TOPIC/dd538368_en-us_VS_110_2_0_0_0_0%]([%$TOPIC/dd538368_en-us_VS_110_2_0_0_0_1%].Property Or [%$TOPIC/dd538368_en-us_VS_110_2_0_0_0_2%].Field, AllowMultiple := False,  _
	Inherited := True)> _
Public NotInheritable Class TimestampAttribute _
	Inherits [%$TOPIC/dd538368_en-us_VS_110_2_0_0_0_3%]
[[%$TOPIC/dd538368_en-us_VS_110_2_0_1_0_0%]([%$TOPIC/dd538368_en-us_VS_110_2_0_1_0_1%].Property|[%$TOPIC/dd538368_en-us_VS_110_2_0_1_0_2%].Field, AllowMultiple = false, 
	Inherited = true)]
public sealed class TimestampAttribute : [%$TOPIC/dd538368_en-us_VS_110_2_0_1_0_3%]
[[%$TOPIC/dd538368_en-us_VS_110_2_0_2_0_0%]([%$TOPIC/dd538368_en-us_VS_110_2_0_2_0_1%]::Property|[%$TOPIC/dd538368_en-us_VS_110_2_0_2_0_2%]::Field, AllowMultiple = false, 
	Inherited = true)]
public ref class TimestampAttribute sealed : public [%$TOPIC/dd538368_en-us_VS_110_2_0_2_0_3%]
[<[%$TOPIC/dd538368_en-us_VS_110_2_0_3_0_0%]>]
[<[%$TOPIC/dd538368_en-us_VS_110_2_0_3_0_1%]([%$TOPIC/dd538368_en-us_VS_110_2_0_3_0_2%].Property|[%$TOPIC/dd538368_en-us_VS_110_2_0_3_0_3%].Field, AllowMultiple = false, 
    Inherited = true)>]
type TimestampAttribute =  
    class 
        inherit [%$TOPIC/dd538368_en-us_VS_110_2_0_3_0_4%] 
    end

The TimestampAttribute type exposes the following members.

Constructors
  NameDescription
Public method Supported by Portable Class Library Supported in .NET for Windows Store apps TimestampAttributeInitializes a new instance of the TimestampAttribute class.
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Properties
  NameDescription
Public property TypeIdWhen implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute.)
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Methods
  NameDescription
Public method Supported by Portable Class Library Supported in .NET for Windows Store apps EqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Public method Supported by Portable Class Library Supported in .NET for Windows Store apps GetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public method Supported by Portable Class Library Supported in .NET for Windows Store apps GetTypeGets the Type of the current instance. (Inherited from Object.)
Public method IsDefaultAttributeWhen overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute.)
Public method MatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Public method Supported by Portable Class Library Supported in .NET for Windows Store apps ToStringReturns a string that represents the current object. (Inherited from Object.)
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Explicit Interface Implementations
  NameDescription
Explicit interface implemetation Private method _AttributeGetIDsOfNamesMaps a set of names to a corresponding set of dispatch identifiers. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoRetrieves the type information for an object, which can be used to get the type information for an interface. (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeGetTypeInfoCountRetrieves the number of type information interfaces that an object provides (either 0 or 1). (Inherited from Attribute.)
Explicit interface implemetation Private method _AttributeInvokeProvides access to properties and methods exposed by an object. (Inherited from Attribute.)
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Remarks

A row version type (also known as a sequence number) is a binary number that is guaranteed to be unique in the database. It does not represent an actual time. Row version data is not visually meaningful. Therefore, when the TimestampAttribute attribute is used with a Dynamic Data field, the column is not displayed unless the ScaffoldColumnAttribute attribute of the column is explicitly set to true.

For more information, see rowversion.

Version Information

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4

.NET Framework Client Profile

Supported in: 4

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8
Platforms

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

Thread Safety
Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.