In the past I've used a Singleton Pattern to load the connection string when the application starts via the global.asa file.

I have a project now where each user has a unique connection string to the database. I would like to load this connection string once. The issue is that the singleton pattern will not work for me since each user has there own connection string. Basically the connection string is created dynamically.

I do not want to store it is session. If anyway has a clever way of doing this in .NET let me know ?