PropertyBuilder<TProperty>.IsConcurrencyToken(Boolean) Method

Definition

Namespace:

Microsoft.EntityFrameworkCore.Metadata.Builders

Assembly:

Microsoft.EntityFrameworkCore.dll

Package:

Microsoft.EntityFrameworkCore v8.0.0

Configures whether this property should be used as a concurrency token. When a property is configured as a concurrency token the value in the database will be checked when an instance of this entity type is updated or deleted during SaveChanges() to ensure it has not changed since the instance was retrieved from the database. If it has changed, an exception will be thrown and the changes will not be applied to the database.

public virtual Microsoft.EntityFrameworkCore.Metadata.Builders.PropertyBuilder<TProperty> IsConcurrencyToken (bool concurrencyToken = true);

override this.IsConcurrencyToken : bool -> Microsoft.EntityFrameworkCore.Metadata.Builders.PropertyBuilder<'Property>

Public Overridable Function IsConcurrencyToken (Optional concurrencyToken As Boolean = true) As PropertyBuilder(Of TProperty)

Parameters

concurrencyToken

Boolean

A value indicating whether this property is a concurrency token.

Returns

PropertyBuilder<TProperty>

The same builder instance so that multiple configuration calls can be chained.