问题：
At work we use WiX for building installation packages.在工作中，我们使用WiX来构建安装包。 We want that installation of product X would result in uninstall of the previous version of that product on that machine.我们希望产品 X 的安装会导致在该机器上卸载该产品的先前版本。
I've read on several places on the Internet about a major upgrade but couldn't get it to work.我已经在 Internet 上的几个地方阅读了有关重大升级的信息，但无法使其正常工作。 Can anyone please specify the exact steps that I need to take to add uninstall previous version feature to WiX?任何人都可以请指定我需要采取的将卸载以前版本功能添加到 WiX 的确切步骤吗？
解决方案：
参考一： https://en.stackoom.com/question/ThN参考二： https://stackoom.com/question/ThN