Different binary file size after converting to VS 2010

When I converte开发者_如何学编程d a VS 2005 project to VS 2010, with all projects still pointing to compile for the .NET 2.0 Framework, the dlls generated are a totally different file size. Is this normal or something to be concerned about?

The difference in file size is probably due to changes in the compiler shipped with the new version of Visual Studio. In theory, it should be more efficient. It should not be anything to worry about, but that doesn't mean you should forgo testing.

Microsoft does publish information on "Breaking Changes" with the new version of Visual Studio, e.g., http://msdn.microsoft.com/en-us/library/cc714070.aspx for VB, http://msdn.microsoft.com/en-us/library/bb531344.aspx for C++, and http://msdn.microsoft.com/en-us/library/ee855831.aspx for C#.