NET framework 3.5 and for earlier framework version, you will have to use ‘Remove’ method instead of ‘Delete On Submit’ method.For Removing More than one database records, follow the code example below: To edit data, simply first, we will have to retrieve the objects(rows) and make changes to them wherever needed.To do this create a new data context method in the following way: The name of this method consists of the keyword Update and the name of the class.For example, for Person class the method name would be Update Person.In this case, this method will be executed instead of the default one.For example, suppose that we set Update Checks for all Company fields to 'Always' to handle all possible concurrency violations, but don't want to check if the cached data are up-to-date when deleting unnecessary companies.This generated context is inside a The Thread Static attribute ensures that every thread will access a different instance. Sometimes IIS reuses the thread for other requests, and the context is not a new, fresh instance.By default, the Submit Changes method persists modified data via the standard insert, update and delete SQL commands (adapted to the current SQL dialect).
See Entity Developer documentation for more information.
(And we don't want to enforce a server constraint for whatever reason - e.g., there is already a lot of companies without emails currently in the database). Consider you have a stored procedure that updates a company in the database.
Then we can implement the Update Company method as follows: The entry point for these queries is the Devart. This function on its own is not much meaningful, but you can tell Linq Connect to use the stored procedure to update the Company entity.
In some cases, this may be not the behaviour you want.
For example, you may want to perform some validation, calculate some of the columns or even change data in other tables when saving changes to an entity object.