I have started using the Excel interop assemblies that are provided by Microsoft for one of my C# applications. Everything is going fine, but there seems to be a lack of strong typing, and honestly it feels like I am writing VBA code. Are there any alternative ways to interact with Excel from C# that would give a better OO experience? I am using VS2010 and .Net 4.0 by the way.
Take a look at the EPPlus project over at Codeplex:
I recently used this and it worked very well. (VS2010 and .Net4)
EPPlus is a .net library that reads and writes Excel 2007/2010 files using the Open Office Xml format (xlsx).
Nice example page: http://epplus.codeplex.com/wikipage?title=ContentSheetExample