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public enum EntityState
[System.Flags]
[System.ComponentModel.DataAnnotations.BindableType(IsBindable=false)]
public enum EntityState
[<System.Flags>]
type EntityState =
[<System.Flags>]
[<System.ComponentModel.DataAnnotations.BindableType(IsBindable=false)>]
type EntityState =
Public Enum EntityState
Inheritance
EntityState
The object exists but is not being tracked. An entity is in this state immediately after it has been created and before it is added to the object context. An entity is also in this state after it has been removed from the context by calling the
Detach(Object)
method or if it is loaded by using a
NoTracking
MergeOption
. There is no
ObjectStateEntry
instance associated with objects in the
Detached
state.
One of the scalar properties on the object was modified and the
SaveChanges()
method has not been called. In POCO entities without change-tracking proxies, the state of the modified properties changes to
Modified
when the
DetectChanges()
method is called. After the changes are saved, the object state changes to
Unchanged
.
The object context must know the state of an object to save changes back to the data source.
ObjectStateEntry
objects store
EntityState
information. The
SaveChanges
methods of the
ObjectContext
process entities that are attached to the context and update the data source depending on the
EntityState
of each object. For more information, see
Creating, Adding, Modifying, and Deleting Objects
.
The state of objects inside an object context is managed by the
ObjectStateManager
. To find out the state of an object, call one of the following
ObjectStateManager
methods:
TryGetObjectStateEntry
,
GetObjectStateEntry
, or
GetObjectStateEntries
. The
State
property of the
ObjectStateEntry
defines the state of the object.
Applies to
