問題：
At work we use WiX for building installation packages.在工作中，我們使用WiX來構建安裝包。 We want that installation of product X would result in uninstall of the previous version of that product on that machine.我們希望產品 X 的安裝會導致在該機器上卸載該產品的先前版本。
I've read on several places on the Internet about a major upgrade but couldn't get it to work.我已經在 Internet 上的幾個地方閱讀了有關重大升級的信息，但無法使其正常工作。 Can anyone please specify the exact steps that I need to take to add uninstall previous version feature to WiX?任何人都可以請指定我需要採取的將卸載以前版本功能添加到 WiX 的確切步驟嗎？
解決方案：
參考一： https://en.stackoom.com/question/ThN參考二： https://stackoom.com/question/ThN