如何确定现有应用的安装范围? [英] How to determine install scope of existing app?

问题描述

我有一个基于 WixUI_Advanced 的安装程序，允许用户选择他们的安装范围(每个用户或机器范围).

I have an installer based on the WixUI_Advanced that allows users to choose their install scope (per user or machine wide).

升级时(安装了较低版本的现有应用)我想隐藏安装范围屏幕并自动选择他们上次选择的安装范围.

When upgrading (have an existing app with a lower version installed) I would like to hide the install scope screen and automatically select the install scope they chose last time.

如何知道上次安装使用了哪个安装范围?

How can I tell what install scope was used for the previous installation?

编辑

查看我的 MSI 日志，我可以看到找到了我现有的安装:

Looking at my MSI logs I can see that my existing installation is found:

// Existing user specific installation
FindRelatedProducts: Found application: {C5D3DCD0-4A97-4224-AF22-BDDEB357EEB7}
MSI (c) (C4:F0) [11:11:39:289]: PROPERTY CHANGE: Adding WIX_UPGRADE_DETECTED property. Its value is '{C5D3DCD0-4A97-4224-AF22-BDDEB357EEB7}'.
MSI (c) (C4:F0) [11:11:39:289]: PROPERTY CHANGE: Adding MIGRATE property. Its value is '{C5D3DCD0-4A97-4224-AF22-BDDEB357EEB7}'.

// Existing machine wide installation
MSI (c) (2C:4C) [11:03:19:258]: FindRelatedProducts: current install is per-user.  Related install for product '{C5D3DCD0-4A97-4224-AF22-BDDEB357EEB7}' is per-machine.  Skipping...

我可以看到 WIX_UPGRADE_DETECTED 和 MIGRATE 属性仅在现有安装的范围与当前安装匹配时才设置，这是有意义的.也许我可以直接使用 FindRelatedProducts ?

I can see the WIX_UPGRADE_DETECTED and MIGRATE properties are set only when the existing installation's scope matches the current installation which makes sense. Perhaps I can use FindRelatedProducts directly?

推荐答案

我最终在注册表中检查了 DisplayName 与我们的应用程序名称匹配的条目(灵感来自 这个答案):

I ended up checking for an entry with the DisplayName matching our app name in the registry in (inspired by this answer):

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall

然后我抓取InstallLocation的内容来确定安装范围:

Then I grabbed the content of InstallLocation to determine the install scope:

if (installLocation == string.Empty)
{
    // Installed before we introduced scope => never set install location
    return ExistingInstallation.MachineWide;
}
else if (installLocation.Contains(_programFilesPath))
{
    return ExistingInstallation.MachineWide;
}
else
{
    return ExistingInstallation.UserSpecific;
}

这篇关于如何确定现有应用的安装范围?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！