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Need help understanding "Activator.CreateInstance" (ASP.NET 2.0 / C#)

bemara57 asked
Last Modified: 2013-11-07
I'm trying to get this concept because I want to use it. Bascially the end result is having an interchangable data access layer (Switching from SqlClient to OracleClient for example). Below is the core code that I'm trying to understand:

      static public ArticlesProvider Instance
            _instance = (ArticlesProvider)Activator.CreateInstance(Type.GetType(DAL.SqlClient.SqlArticlesProvider));
            return _instance;

I found this snippet on the web but it's incomplete and couldn't find the rest of it. What I don't understand is what does Activator.CreateInstance do and is this really saying that it creating an instance of an entire namespace?
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