通过 Click once 部署在更新中持久化 app.config 变量 [英] Persisting app.config variables in updates via Click once deployment

问题描述

每次单击一次应用程序发布新更新时，app.config 文件中的变量都会被销毁

Every time a new update is released for an application with click once, the variables in the app.config file are destroyed

<userSettings>
    <app.My.MySettings>
      <setting name="Email" serializeAs="String">
        <value />
      </setting>
      <setting name="UserName" serializeAs="String">
        <value />
      </setting>
    </app.My.MySettings>
  </userSettings>

我怎样才能防止这种情况发生?

How can i prevent that?

有没有办法从以前的应用程序版本中获取变量?

Is there any way of feching the variables from the previous application version?

推荐答案

您是否选中了应用程序应检查更新"选项?

Do you have the "Applications should check for updates" option checked?

查看探索持久应用程序设置的秘密(部分标题为维护程序版本之间的设置"):

Have a look at Exploring Secrets of Persistent Application Settings (the section titled "Maintaining Settings Between Program Versions"):

对于当前的任何设置版本中的设置匹配以前的版本，这个例程将将它们导入当前版本的user.config 文件:

For any settings from the current version that match settings in the prior version, this routine will import them into the current version's user.config file:

在程序的入口点，放置以下代码.

At the entry point to your program, place the following code.

if (Properties.Settings.Default.UpgradeSettings) 
{
   Properties.Settings.Default.Upgrade();
   Properties.Settings.Default.UpgradeSettings = false;
}

请注意，UpgradeSettings 是您需要自己添加的布尔值用户 设置(不是应用程序)，并且您希望默认值为 True.

Note that UpgradeSettings is a boolean user setting (not application) that you need to add yourself, and you want the default value to be True.

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