Where can I find a comparison of what changed between the different versions of Microsoft's ASP.Net Web Parts?

I realize that I could manually go through the documentation of each object for each version of the .Net framework, but that would be less than ideal. Where can I find a table or outline or some other kind of summary on what changed with the开发者_如何学运维 different versions of ASP.Net Web Parts?

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There are two kinds of web parts, ASP.NET Web Parts and SharePoint Web Parts:

http://spandothers.wordpress.com/2007/10/11/asp-net-web-parts-v-sharepoint-web-parts/

SharePoint Web part vs ASP.NET web part