Why are three properties in DbParameterCollection abstract in reference assemblies but virtual otherwise?
The reference assemblies are correct. In .NET Framework 4.5, these properties were abstract. They were changed to virtual in .NET Framework 4.5.1. It appears you’ve uncovered a documentation bug. As you probably have already guessed, the difference between the two System.Data.dll assemblies you are observing is due to how .NET Framework separates reference assemblies and … Read more