LINQ to SQL事务和读取记录的ID

Question

任何人都可以解释我如何在Linq中插入带有事务的数据库并读取该记录的id？

Answer 1

If you don't have a DBML setup, then add one to your project.
To add a DBML to your project from Solution Explorer:
Right click on your project -> go to Add new Item -> select LINQ to SQL Classes

To fill the DBML with your tables go to:
View -> Server Explorer
Expand your database and drag your tables onto the dbml viewer

Then if your table is caleld Widget:

DataClasses1DataContext db = new DataClasses1DataContext(myConnection);
db.Widgets.InsertOnSubmit(myWidget);

db.SubmitChanges();

//Here myWidget.Id will be set

Answer 2

Simply commit your changes to the database. The newly inserted entity will have it's ID property automatically updated with the newly assigned id and you can read it from there.