EntityKey.EntityNotValidKey Field


A simple EntityKey identifying an entity that resulted from a failed TREAT operation.

Namespace:   System.Data
Assembly:  System.Data.Entity (in System.Data.Entity.dll)

public static readonly EntityKey EntityNotValidKey

Field Value

Type: System.Data.EntityKey

There are various ways to get an invalid entity. The most common scenario is when an Entity SQL query uses the TREAT operator to interpret an instance of a polymorphic type as a particular type, and the instance in question does not match. (TREAT is similar to the C# as operator). In this case, the query returns an entity that is not valid, and the entity key of the resulting entity is set to EntityNotValidKey

.NET Framework
Available since 3.5
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