DbContext::SaveChanges Method ()

Entity Framework 6.0

Saves all changes made in this context to the underlying database.

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

Syntax

public:
virtual int SaveChanges()

Type: System::Int32

The number of objects written to the underlying database.

Exception	Condition
DbUpdateException	An error occurred sending updates to the database.
DbUpdateConcurrencyException	A database command did not affect the expected number of rows. This usually indicates an optimistic concurrency violation; that is, a row has been changed in the database since it was queried.
DbEntityValidationException	The save was aborted because validation of entity property values failed.
NotSupportedException	An attempt was made to use unsupported behavior such as executing multiple asynchronous commands concurrently on the same context instance.
ObjectDisposedException	The context or connection have been disposed.
InvalidOperationException	Some error occurred attempting to process entities in the context either before or after sending commands to the database.