To install the XMLSpy Plugin for Visual Studio, you need to do the following:
1.Install Microsoft Visual Studio 2010/2012/2013/2015/2017/2019.
2.Install XMLSpy (Enterprise or Professional Edition).
3.Download and run the XMLSpy integration package for Microsoft Visual Studio. This package is available on the XMLSpy (Enterprise and Professional Editions) download page at www.altova.com. (Please note: You must use the integration package corresponding to your XMLSpy version (current version is 2020).)
Once the integration package has been installed, you will be able to use XMLSpy in the Visual Studio environment.