How to "get a new connection object, use it, close and dispose it each time you need", and handle the connection string?

As all we know, the connection string holds very important information...

So while taking this strategy while developing .NET Windows-based applications:

get a new connection object, use it, close and dispose it each time 开发者_开发问答you need

How can I handle the connection string within the application?

Usually, I would have a connection factory method centrally in the data layer. Everyone who needs a connection, should call that factory method; in order to ensure that all connections are created equal - and to avoid throwing magic strings around in the source code.

Example:

DBConnection conn = DBFactory.CreateConnection();

The only place you need to know about the connection string and where to get it, would be in that one method.