WiX: uninstall older version of the application

最新推荐文章于 2021-03-10 07:50:12 发布

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最新推荐文章于 2021-03-10 07:50:12 发布

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本文介绍如何使用WiX工具生成的安装程序实现应用的升级功能。通过定义特定的XML结构，可以实现在安装过程中检查现有版本并提示用户是否进行卸载。文中详细解释了如何配置版本号和升级代码来确保正确的升级流程。

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I have installer generated by WiX and I want it to ask: "You have already installed this app. Do you want to uninstall it?" when run. Currently it installs the app once more and uninstalls it incorrectly if there was another version installed before.

The folowing will allow you to perform an upgrade, which removes previous versions:

<?define Version = "!(bind.fileVersion.<YOUR-FILE-HERE>)" ?>
<?define UpgradeCode = "<YOUR-GUID-HERE>" ?>

<Upgrade Id="$(var.UpgradeCode)">
  <UpgradeVersion Minimum="$(var.Version)" IncludeMinimum="no" OnlyDetect="yes" Property="NEWERVERSIONDETECTED" />
  <UpgradeVersion Minimum="0.0.0" Maximum="$(var.Version)" IncludeMinimum="yes" IncludeMaximum="yes" Property="OLDERVERSIONBEINGUPGRADED" />
</Upgrade>

<InstallExecuteSequence>
  <RemoveExistingProducts After="InstallInitialize" />
  <Custom Action="NewerVersion" After="FindRelatedProducts">NEWERVERSIONDETECTED</Custom>
</InstallExecuteSequence>

<CustomAction Id="NewerVersion" Error="A later version of [ProductName] is already installed." />