Useful tips

What is context SaveChanges?

What is context SaveChanges?

SaveChanges method saves all changes made in the context of the database. You can add, modify, and remove data using your context and entity classes. SaveChanges method automatically call DetectChanges method to discover any changes to entity instances before saving to the underlying database.

What does SaveChanges return in Entity Framework?

Returns. The number of state entries written to the underlying database. This can include state entries for entities and/or relationships.

How do I save changes in Entity Framework Core?

Entity Framework Core Save Changes to the database using the SaveChanges method of DbContext. When we use the SaveChanges it prepares the corresponding insert , update , delete queries. It then wraps them in a Transaction and sends it to the database. If any of the queries fails all the statements are rolled back.

What is Save Changes in Entity Framework?

In Entity Framework, the SaveChanges() method internally creates a transaction and wraps all INSERT, UPDATE and DELETE operations under it. Thus, each SaveChanges() method call creates a new transaction and executes database commands within it.

When should you call context SaveChanges?

If you need to enter all rows in one transaction, call it after all of AddToClassName class. If rows can be entered independently, save changes after every row. Database consistence is important.

What is DbContext in Entity Framework?

DbContext is an important class in Entity Framework API. It is a bridge between your domain or entity classes and the database. DbContext is the primary class that is responsible for interacting with the database. Querying: Converts LINQ-to-Entities queries to SQL query and sends them to the database.

When would you use SaveChanges false AcceptAllChanges ()?

Sometimes though the SaveChanges(false) + AcceptAllChanges() pairing is useful. The most useful place for this is in situations where you want to do a distributed transaction across two different Contexts.