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Do Entity Framework handles the change tracking and how?
Entity Framework provides ability to track the changes made to entities and their relations, so the correct updates are made on the database when the SaveChanges method of context is called. This is a key feature of the Entity Framework.
How do I change databases in Entity Framework?
You can configure Entity Framework to delete (drop) and recreate your database every time there is a change to your schema. To do this, you need to create an initializer class in the same folder as your DbContext class. The class needs to inherit from DropCreateDatabaseIfModelChanges .
How do I change datatype in Entity Framework?
If you need to do this, I’d suggest you to do the following steps:
- Add a new column with your new type.
- Use Sql() to take over the data from the original column using an update statement.
- Remove the old column.
- Rename the new column.
How does entity change tracking work in Entity Framework?
It allows you to record the entity changed, the value changed, the primary key of the changed record, and the date of change. However, it does not track the adding of entities and it does not support multiple-column primary keys. With all of that said, I feel this is a pretty good step toward having full auditing in Entity Framework for our system.
How to track changes to an entity in dbcontext?
The method outlined about is a good way to track and audit changes made to existing entities. It allows you to record the entity changed, the value changed, the primary key of the changed record, and the date of change. However, it does not track the adding of entities and it does not support multiple-column primary keys.
How to enable change tracking for entities in Excel?
Select the database to export data to, and then select Publish. You can publish one or more entities to your database. Select Show published only to see a list of entities that have previously been published. Select an entity that is published, and then select Change tracking. Select the appropriate option for change tracking for your environment.
Why does EF Core track the state of queried entities?
This is because EF Core automatically tracks the state of queried entities and then detects any changes made to these entities when SaveChanges is called. This approach has several advantages over explicitly tracking entity instances: