ConcurrencyBehavior Enumeration

 

Applies To: Dynamics 365 (online), Dynamics 365 (on-premises), Dynamics CRM 2016, Dynamics CRM Online

Contains values to indicate the optimistic concurrency behavior that should be applied when performing entity update and delete operations.

Namespace:   Microsoft.Xrm.Sdk
Assembly:  Microsoft.Xrm.Sdk (in Microsoft.Xrm.Sdk.dll)

Syntax

[DataContractAttribute(Name = "ConcurrencyBehavior", Namespace = "https://schemas.microsoft.com/xrm/7.1/Contracts")]
public enum ConcurrencyBehavior

<DataContractAttribute(Name := "ConcurrencyBehavior", Namespace := "https://schemas.microsoft.com/xrm/7.1/Contracts")>
Public Enumeration ConcurrencyBehavior

Members

	Member name	Description
	AlwaysOverwrite	Specifies the behavior where an update or delete operation is applied without regard to the version of the record in the database. Value = 2. If optimistic concurrency is not enabled for the target entity, the AlwaysOverwrite behavior is applied.
	Default	Specifies to use the default behavior. Value = 0. The default value is also used if no value is set in the ConcurrencyBehavior property of the request. The meaning of “default” is interpreted differently based on the calling context.
	IfRowVersionMatches	Specifies the behavior where an update or delete operation is only applied if the entity record in the database has the same row version as the entity or entity reference in the request. Value = 1. If no row version value is provided on the entity or entity references in the request, the request fails immediately.

Remarks

For the Default option, the following behavior applies based on the indicated conditions.

IsOptimisticConcurrencyEnabled	Source	Behavior
No	Any	AlwaysOverwrite
Yes	Any	AlwaysOverwrite
Yes	Web service	IfVersionMatches
Yes	Plug-in/custom workflow activity	AlwaysOverwrite

See Also

Microsoft.Xrm.Sdk Namespace
Reduce potential data loss using optimistic concurrency

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