Important (before running the examples):
You have to give "write" rights to the ASP.NET Machine Account user for the
Northwind.mdb database. (This Access database is located in the App_Data folder.)

To do this, right-click on the Northwind.mdb file, select Properties and click the
Security tab. If the ASP.NET Machine Account isn't displayed in the users list,
you have to add it manually:

- click Add->Advanced->Find now and from the list with all the possible users,
select the ASP.NET Machine Account user and then assign to it the "Write" right.


Make sure the Internet Guest Account has the same rights.

If you still can't update the database, try to give the same rights to the Service account.

Also, make sure that the Northwind.mdb is not marked as Read-Only


If you don't follow these steps, you'll get an exception when trying to update the database:
Operation must use an updateable query.