英文:
UI validation in WiX custom action proceeds to server mode / installation
问题
在使用wix4（也适用于rc2、rc3和最新版本）中尝试验证自定义对话框中的用户输入。
我找到了各种示例，说明了应该如何工作，但不幸的是，我在这里无法正确实现它。
有一个对话框用于选择文件夹，设置属性如下：
<Publish Dialog="CustomPropertiesDlg" Control="ChangeFooFolder" Property="_BrowseProperty" Value="FOO_DIR" Order="1" />
<Publish Dialog="CustomPropertiesDlg" Control="ChangeFooFolder" Event="SpawnDialog" Value="BrowseDlg" Order="2" />
然后，当用户单击“下一步”时，我尝试运行验证：
<Publish Dialog="CustomPropertiesDlg" Control="Next" Event="DoAction" Value="UI_CheckFooDir" Order="1" />
<Publish Dialog="CustomPropertiesDlg" Control="Next" Event="NewDialog" Value="InvalidFooPathDlg" Order="2" Condition="FOO_DIR_VALID&lt;&gt;&quot;1&quot;" />
<Publish Dialog="CustomPropertiesDlg" Control="Next" Event="NewDialog" Value="VerifyReadyDlg" Order="5" Condition="FOO_DIR_VALID=&quot;1&quot;" />
<Publish Dialog="VerifyReadyDlg" Control="Back" Event="NewDialog" Value="CustomPropertiesDlg" Order="10" />
在这一点上，我的期望是，无效的目录将设置FOO_DIR_VALID="0"（如果有效则为"1"）。
这是一个简单的代码，如下所示：
[CustomAction]
public static ActionResult VerifyFooPath(Session session)
{
session["FOO_DIR_VALID"] = "0";
var fooDir= session["FOO_DIR"];
session.Log($"Checking whether {fooDir} contains a foo.exe file");
if (Directory.Exists(fooDir) && File.Exists(Path.Combine(fooDir, "foo.exe")))
{
session.Log($"Foo directory accepted as {fooDir}");
session["FOO_DIR_VALID"] = "1";
}
return ActionResult.Success;
}
然而，尽管日志显示自定义操作执行并设置了FOO_DIR_VALID属性，尽管UI显示“不，路径无效”的对话框，但安装过程仍然直接进行到服务器阶段。如果我关闭对话框（一个默认的InvalidDirDlg.wxs的副本，具有不同的消息），我希望UI保持在原地，让用户修复错误。然而，它跳过了VerifyReadyDlg（最后一个屏幕）并立即提示提升。我做错了什么？
日志：
Action start 18:19:30: UI_CheckFooDir.
MSI (c) (F4:04) [18:19:30:414]: 调用远程自定义操作。DLL: C:\Users\bla\AppData\Local\Temp\MSI5048.tmp, 入口点: VerifyFooPath
MSI (c) (F4:10) [18:19:30:415]: 启用伪装。
MSI (c) (F4:10) [18:19:30:415]: 在调用服务器上的安装之前尝试启用所有禁用的特权
MSI (c) (F4:10) [18:19:30:415]: 已连接到CA接口的服务。
MSI (c) (F4!C0) [18:19:30:876]: 属性更改: 添加了FOO_DIR_VALID属性。其值为'0'。
Action ended 18:19:30: UI_CheckFooDir. 返回值 1。
Action 18:19:30: InvalidFooPathDlg. 对话框已创建
Action ended 18:19:32: WelcomeDlg. 返回值 1。
MSI (c) (F4:34) [18:19:32:623]: 跳过操作: MaintenanceWelcomeDlg（条件为false）
MSI (c) (F4:34) [18:19:32:623]: 正在执行操作: ProgressDlg
MSI (c) (F4:34) [18:19:32:623]: 注意: 1: 2205 2: 3: ActionText
Action 18:19:32: ProgressDlg.
Action start 18:19:32: ProgressDlg.
Action 18:19:32: ProgressDlg. 对话框已创建
Action ended 18:19:32: ProgressDlg. 返回值 1。
MSI (c) (F4:34) [18:19:32:729]: 正在执行操作: ExecuteAction
MSI (c) (F4:34) [18:19:32:729]: 注意: 1: 2205 2: 3: ActionText
Action 18:19:32: ExecuteAction.
Action start 18:19:32: ExecuteAction.
MSI (c) (F4:34) [18:19:32:735]: 属性更改: 添加了SECONDSEQUENCE属性。其值为'1'。
MSI (c) (F4:34) [18:19:32:736]: 获取执行互斥体。
MSI (c) (F4:34) [18:19:32:736]: 增加计数器以禁用关机。增加计数器后: 0
MSI (c) (F4:34) [18:19:32:736]: 切换到服务器:（此处省略了属性）```
<details>
<summary>英文:</summary>
Trying to verify user input in a custom dialog using wix4 (same behavior with rc2, rc3 and latest builds).
I found various examples of how it's supposed to work, but unfortunately I cannot get it right here.
There's a dialog to pick a folder, setting a property like this:
```xml
<Publish Dialog="CustomPropertiesDlg" Control="ChangeFooFolder" Property="_BrowseProperty" Value="FOO_DIR" Order="1" />
<Publish Dialog="CustomPropertiesDlg" Control="ChangeFooFolder" Event="SpawnDialog" Value="BrowseDlg" Order="2" />
then I try to run validation when the user clicks Next:
<Publish Dialog="CustomPropertiesDlg" Control="Next" Event="DoAction" Value="UI_CheckFooDir" Order="1" />
<Publish Dialog="CustomPropertiesDlg" Control="Next" Event="NewDialog" Value="InvalidFooPathDlg" Order="2" Condition="FOO_DIR_VALID&lt;&gt;&quot;1&quot;" />
<Publish Dialog="CustomPropertiesDlg" Control="Next" Event="NewDialog" Value="VerifyReadyDlg" Order="5" Condition="FOO_DIR_VALID=&quot;1&quot;" />
<Publish Dialog="VerifyReadyDlg" Control="Back" Event="NewDialog" Value="CustomPropertiesDlg" Order="10" />
My expectation at this point is that an invalid directory will set FOO_DIR_VALID="0" (and "1" if it is).
It's trivial code like this:
[CustomAction]
public static ActionResult VerifyFooPath(Session session)
{
session["FOO_DIR_VALID"] = "0";
var fooDir= session["FOO_DIR"];
session.Log($"Checking whether {fooDir} contains a foo.exe file");
if (Directory.Exists(fooDir) && File.Exists(Path.Combine(fooDir, "foo.exe")))
{
session.Log($"Foo directory accepted as {fooDir}");
session["FOO_DIR_VALID"] = "1";
}
return ActionResult.Success;
}
Yet, even though the log shows me that the custom action executes and sets the FOO_DIR_VALID property and even though the UI shows me the "Nope, the path is invalid" dialog.. the installation proceeds straight to the server phase afterwards. If I close the dialog (a straight up copy of the default InvalidDirDlg.wxs with a different message) I want the UI to remain where it is. Let the user fix the error. Yet it skips the VerifyReadyDlg (the last screen) and immediately prompts for elevation. What am I doing wrong?
Log:
Action start 18:19:30: UI_CheckFooDir.
MSI (c) (F4:04) [18:19:30:414]: Invoking remote custom action. DLL: C:\Users\bla\AppData\Local\Temp\MSI5048.tmp, Entrypoint: VerifyFooPath
MSI (c) (F4:10) [18:19:30:415]: Cloaking enabled.
MSI (c) (F4:10) [18:19:30:415]: Attempting to enable all disabled privileges before calling Install on Server
MSI (c) (F4:10) [18:19:30:415]: Connected to service for CA interface.
MSI (c) (F4!C0) [18:19:30:876]: PROPERTY CHANGE: Adding FOO_DIR_VALID property. Its value is '0'.
Action ended 18:19:30: UI_CheckFooDir. Return value 1.
Action 18:19:30: InvalidFooPathDlg. Dialog created
Action ended 18:19:32: WelcomeDlg. Return value 1.
MSI (c) (F4:34) [18:19:32:623]: Skipping action: MaintenanceWelcomeDlg (condition is false)
MSI (c) (F4:34) [18:19:32:623]: Doing action: ProgressDlg
MSI (c) (F4:34) [18:19:32:623]: Note: 1: 2205 2: 3: ActionText
Action 18:19:32: ProgressDlg.
Action start 18:19:32: ProgressDlg.
Action 18:19:32: ProgressDlg. Dialog created
Action ended 18:19:32: ProgressDlg. Return value 1.
MSI (c) (F4:34) [18:19:32:729]: Doing action: ExecuteAction
MSI (c) (F4:34) [18:19:32:729]: Note: 1: 2205 2: 3: ActionText
Action 18:19:32: ExecuteAction.
Action start 18:19:32: ExecuteAction.
MSI (c) (F4:34) [18:19:32:735]: PROPERTY CHANGE: Adding SECONDSEQUENCE property. Its value is '1'.
MSI (c) (F4:34) [18:19:32:736]: Grabbed execution mutex.
MSI (c) (F4:34) [18:19:32:736]: Incrementing counter to disable shutdown. Counter after increment: 0
MSI (c) (F4:34) [18:19:32:736]: Switching to server: (snipped properties here)```
</details>
# 答案1
**得分**: 1
你需要 `SpawnDialog` `InvalidDirDlg`；`NewDialog` 会替换当前对话框，而 `InvalidDirDlg` 被设计成一个弹出式对话框。（它只有一个“确定”按钮。）
<details>
<summary>英文:</summary>
You need to `SpawnDialog` the `InvalidDirDlg`; `NewDialog` replaces the current dialog and `InvalidDirDlg` is designed as a popup. (It has only an OK button.)
</details>
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