DbContext.SaveChanges Method

Definition

Overloads

SaveChanges(Boolean)

Saves all changes made in this context to the database.

This method will automatically call DetectChanges() to discover any changes to entity instances before saving to the underlying database. This can be disabled via AutoDetectChangesEnabled.

Entity Framework Core does not support multiple parallel operations being run on the same DbContext instance. This includes both parallel execution of async queries and any explicit concurrent use from multiple threads. Therefore, always await async calls immediately, or use separate DbContext instances for operations that execute in parallel. See Avoiding DbContext threading issues for more information.

SaveChanges()

Saves all changes made in this context to the database.

This method will automatically call DetectChanges() to discover any changes to entity instances before saving to the underlying database. This can be disabled via AutoDetectChangesEnabled.

Entity Framework Core does not support multiple parallel operations being run on the same DbContext instance. This includes both parallel execution of async queries and any explicit concurrent use from multiple threads. Therefore, always await async calls immediately, or use separate DbContext instances for operations that execute in parallel. See Avoiding DbContext threading issues for more information.

SaveChanges(Boolean)

Saves all changes made in this context to the database.

This method will automatically call DetectChanges() to discover any changes to entity instances before saving to the underlying database. This can be disabled via AutoDetectChangesEnabled.

Entity Framework Core does not support multiple parallel operations being run on the same DbContext instance. This includes both parallel execution of async queries and any explicit concurrent use from multiple threads. Therefore, always await async calls immediately, or use separate DbContext instances for operations that execute in parallel. See Avoiding DbContext threading issues for more information.

[System.Diagnostics.DebuggerStepThrough]
public virtual int SaveChanges (bool acceptAllChangesOnSuccess);
public virtual int SaveChanges (bool acceptAllChangesOnSuccess);
[<System.Diagnostics.DebuggerStepThrough>]
abstract member SaveChanges : bool -> int
override this.SaveChanges : bool -> int
abstract member SaveChanges : bool -> int
override this.SaveChanges : bool -> int
Public Overridable Function SaveChanges (acceptAllChangesOnSuccess As Boolean) As Integer

Parameters

acceptAllChangesOnSuccess
Boolean

Indicates whether AcceptAllChanges() is called after the changes have been sent successfully to the database.

Returns

Int32

The number of state entries written to the database.

Attributes

Exceptions

An error is encountered while saving to the database.

A concurrency violation is encountered while saving to the database. A concurrency violation occurs when an unexpected number of rows are affected during save. This is usually because the data in the database has been modified since it was loaded into memory.

Remarks

See Saving data in EF Core for more information.

Applies to

SaveChanges()

Saves all changes made in this context to the database.

This method will automatically call DetectChanges() to discover any changes to entity instances before saving to the underlying database. This can be disabled via AutoDetectChangesEnabled.

Entity Framework Core does not support multiple parallel operations being run on the same DbContext instance. This includes both parallel execution of async queries and any explicit concurrent use from multiple threads. Therefore, always await async calls immediately, or use separate DbContext instances for operations that execute in parallel. See Avoiding DbContext threading issues for more information.

[System.Diagnostics.DebuggerStepThrough]
public virtual int SaveChanges ();
public virtual int SaveChanges ();
[<System.Diagnostics.DebuggerStepThrough>]
abstract member SaveChanges : unit -> int
override this.SaveChanges : unit -> int
abstract member SaveChanges : unit -> int
override this.SaveChanges : unit -> int
Public Overridable Function SaveChanges () As Integer

Returns

Int32

The number of state entries written to the database.

Attributes

Exceptions

An error is encountered while saving to the database.

A concurrency violation is encountered while saving to the database. A concurrency violation occurs when an unexpected number of rows are affected during save. This is usually because the data in the database has been modified since it was loaded into memory.

Remarks

See Saving data in EF Core for more information.

Applies to