在Visual Studio Steup项目中，转到适当的安装项目的属性。设置DetectNewerInstalledVersion，ProductCode，Version，UpgradeCode和RemovePreviousVersions属性。我不确定这是否全部，或许需要更多设置......

In the Visual Studio Steup project, go to the Properties of your setup project proper. Set the DetectNewerInstalledVersion, ProductCode, Version, UpgradeCode, and RemovePreviousVersions properties. I am not sure if that''s all or not, perhaps some more settings are required...