从ClickOnce转移到MSI部署的策略-StrategyformovingfromClickOncetoMSIdeployment

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Create an msi version with the following features:

创建一个具有以下特性的msi版本:

• Grab application settings etc from the ClickOnce installation. If it is the first start of the msi version for the current user, check if there is a ClickOnce version and copy/migrate the settings from there. I would not try to do the opposite way and push the settings from ClickOnce to msi because (1) there may be several ClickOnce installations with different settings and you may want to copy all of them and (2) You would have to put migration logic into the old version (which may be required to change for compatibility with future msi installed versions). The ideal approach, however, would be to just keep using the application settings as they were. If they are somewhere in the user profile (outside the ClickOnce installation), it should not matter how the application has been installed.
• 从ClickOnce安装中获取应用程序设置等。如果它是当前用户的msi版本的第一个开始，检查是否有一个ClickOnce版本，并从那里复制/迁移设置。我不会尝试做相反的方向,推动ClickOnce msi,因为(1)的设置可能会有几个ClickOnce安装有不同的设置,你可能想要复制所有的他们,(2)你必须把迁移逻辑到旧版本(这可能需要改变兼容未来msi安装版本)。然而，理想的方法是继续使用应用程序设置。如果它们位于用户配置文件中的某个位置(在ClickOnce安装之外)，则应用程序是如何安装的并不重要。
• Detect the ClickOnce version, offer the user to uninstall it. The ClickOnce version is installed once per user while the msi version can be installed for all users. If you started the uninstallation from within the ClickOnce version, you would only ever uninstall one of potentially several ClickOnce installations. If you do it as described here, every user will be reminded to uninstall his ClickOnce version once he starts the application (in ClickOnce or msi version).
• 检测ClickOnce版本，提供用户卸载它。ClickOnce版本为每个用户安装一次，msi版本为所有用户安装一次。如果从ClickOnce版本中开始卸载，那么您将永远只卸载几个ClickOnce安装中的一个。如果您按照这里描述的那样做，将提醒每个用户在启动应用程序后(以ClickOnce或msi版本)卸载他的ClickOnce版本。

Create a new ClickOnce version which detects the msi installed version.

创建一个新的ClickOnce版本，用于检测msi已安装的版本。

• If no msi version is installed, tell the user about the new installer and offer him to download and run the new installer or do it later. I would not remove all other functionality. That could be a very evil surprise for a user. You should give the user the possibility to postpone the upgrade and use the existing version for some time. Remember that the user most likely did not need admin rights to update the ClickOnce-installed version but will need admin rights to install the msi.
• 如果没有安装msi版本，请告诉用户新的安装程序，并请他下载并运行新的安装程序，或者稍后再做。我不会删除所有其他功能。这对用户来说可能是一个非常邪恶的惊喜。您应该为用户提供延迟升级和使用现有版本一段时间的可能性。请记住，用户很可能不需要管理员权限来更新点击安装版本，但是需要管理员权限来安装msi。
• If it has been installed already, start the msi installed version and shutdown the ClickOnce version immediately. The less rigorous version would be to only inform the user. However, I would prefer to force the user to use the newer version once it is installed. Otherwise you may have compatibility issues in your working directory/application settings (depending on the exact structure of your application, of course).
• 如果已经安装，请立即启动msi已安装版本并关闭ClickOnce版本。不那么严格的版本是只通知用户。但是，我更愿意强制用户在安装后使用更新的版本。否则，您可能会在工作目录/应用程序设置中遇到兼容性问题(当然，这取决于应用程序的确切结构)。