using System; using System.Collections.Generic; using Db4objects.Db4o; public class Program { public static void Main() { using (IObjectContainer container = Db4oEmbedded.OpenFile("example.db4o")) { // use container } // container.Dispose() is automatically called at the end of the using block } }In this example, we are using an embedded object database (Db4o) and opening a file called "example.db4o". We then use the container to interact with the database and perform various operations. At the end of the using block, the Dispose method is called automatically, releasing any resources used by the container. The IObjectContainer.Dispose method is typically part of a larger package or library, such as Db4o for object databases, or other ORMs (object-relational mapping) frameworks.