ConcurrencyCheckAttribute Class

Designates that a property participates in optimistic concurrency checks.


Namespace:  System.ComponentModel.DataAnnotations
Assembly:  System.ComponentModel.DataAnnotations (in System.ComponentModel.DataAnnotations.dll)

[AttributeUsageAttribute(AttributeTargets.Property|AttributeTargets.Field, AllowMultiple = false, 
	Inherited = true)]
public sealed class ConcurrencyCheckAttribute : Attribute

The ConcurrencyCheckAttribute type exposes the following members.

Public methodConcurrencyCheckAttributeInitializes a new instance of the ConcurrencyCheckAttribute class.

Public methodEqualsInfrastructure. Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before the Object is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeReturns the hash code for this instance. (Inherited from Attribute.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Public methodMatchWhen overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)

You apply the ConcurrencyCheckAttribute attribute to a property to specify that the property serves as an indicator of whether the data record in the Silverlight application is still current with the data record in the data source. The value of the property should be compared to the value of the property in the data source before updating the data record. If the values are not equal, the data record in the data source has been changed by another process and the update should not overwrite the changed values.


Supported in: 5, 4, 3

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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

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