从.NET 4.0项目（VSTO）引用在.NET 4.5.1中内置的库

Question

I am building an Outlook 2010 VSTO. The highest framework allowed by Microsoft for this is 4.0. I have 3rd party libraries that I have to use, but they were built in .NET 4.5.1. With that said I can't reference the needed libraries.

I have no idea how to work around this. I have tried creating and referencing a second project that targets the updated framework to run my calls through, but because the second projects framework is a higher version, the VSTO can't see it during runtime.

Does anybody have any ideas as to how I can communicate with these libraries? I should note that all the machines that will use this will have the .NET 4.5.1 Framework.

Answer 1

You need to get a third-party library for the .net framework 4.0.

Also you may consider developing a shared COM add-in instead of VSTO. Or just use Add-in Express which supports targeting .net 4.5.