Quote: "1. What is it exactly ? A dll offering the DBPro methods ?"
A COM dll useable from .NET (1.1 or 2.0) offering methods in-line with the lib dgdk
Quote: "2. Is anybody using it with C# (1.1 or 2.0) ? What are the current issues, limitations, etc... ? "
My tests have included VB.NET in framework 1.1 and 2.0, in VS Enterprise 2003, and VS Pro 2005. Others like the author, Paul(Apexnow), have tested both vb.net and c# in many other dev platforms which the dgdk.net supports, like Sharpdev for example. Apex can explain more about any possible limitations.
Quote: "3. Having this for .NET, does it mean you can now use OOP AND the ease of use of DBPro ? "
yes exactly. this was the constant theme of my prodding of Apex
Quote: "Anything else you may tell me to convince me to try it over XNA ?"
I havent used XNA and its a bit early to compare this new product to anything else imho. I know currently xna is only for c#, not sure if later versions of xna will support vb.net, which may be a concern to a lot of developers. With .NET there is never a good reason to have something available to one language, and not the other - especially since .NET 2.0/2005