I found myself in a situation where I was loading a data table with data, and then possibly bringing in additional data. I knew that .NET 1.1 the ability to merge whole datasets was included, but little did I know how they upgraded that in .NET 2.0.

I was playing with the underlying table of data, and found the .MERGE command. Surprised, I did a quick Google search on it, and found this article describing all the changes to the ADO.NET DataTable class.

Now, if they had only included an APPEND capability, I'd have been even happier.