如何防止 C# 将临时路径作为原始路径的前缀？

Question

我正在尝试在自定义操作中编辑已安装的 cmd 文件：

<CustomAction
 Id="CA_EditScriptAction"
 Return="check"
 Execute="deferred"
 Impersonate="no"
 BinaryKey="CustomActions"
 DllEntry="EditScriptAction"
 />

它在 PublishProduct 操作之后调用。问题是，我找不到该文件，因为出于某种原因，当它使用 Directory.GetFiles(ABSOLUTE_PATH) 等方法时，它会在绝对路径前加上临时安装程序目录的路径。这是日志：

SFXCA: Extracting custom action to temporary directory: C:\Windows\Installer\MSI941A.tmp-\
SFXCA: Binding to CLR version v4.0.30319
Calling custom action MSIActions!MSIActions.CustomActions.EditScriptAction
CUSTOM_DEBUG: C:\Program Files\SomeApp\
ERROR in EditScriptAction: System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Windows\Installer\MSI941A.tmp-\C:\Program Files\SomeApp\'.
   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileSystemEnumerableIterator`1.CommonInit()
   at System.IO.FileSystemEnumerableIterator`1..ctor(String path, String originalUserPath, String searchPattern, SearchOption searchOption, SearchResultHandler`1 resultHandler, Boolean checkHost)
   at System.IO.Directory.GetFiles(String path)
   at MSIActions.CustomActions.EditScriptAction(Session session) in D:\Projects\Visual Studio\app\MSIActions\CustomAction.cs:line 57
CustomAction CA_EditScriptAction returned actual error code 1603 (note this may not be 100% accurate if translation happened inside sandbox)

正如我在日志中看到的那样，它将操作提取到 C:\Windows\Installer\MSI941A.tmp-\ 文件夹中，而不是 C# 方法将该文件夹添加到我传递给函数的任何路径之前，如下所示：

ERROR in EditScriptAction: System.IO.DirectoryNotFoundException: Could not find a part of the path 'C:\Windows\Installer\MSI941A.tmp-\C:\Program Files\SomeApp\'.

而我经过的路径是C:\Program Files\SomeApp\。

这是它发生的地方的代码：

 [CustomAction]
 public static ActionResult EditWebsharkScriptAction(Session session)
 {            
     CustomActionData data = session.CustomActionData;
     var install_dir = data["INSTALLFOLDER"];
     session.Log("CUSTOM_DEBUG: " + install_dir);

     var files = Directory.GetFiles(install_dir); //Exception is thrown here

     //the rest of the code
 }

如何防止 C# 将临时路径作为我的原始路径的前缀？

编辑： 正如我所观察到的，这只发生在非常量变量上。如果我使用硬编码路径创建一个 const 变量，C# 不会在该临时文件夹路径前添加...

Answer 1

延迟的自定义操作只能在执行顺序表中的 InstallInitialize 和 InstallFinalize 操作之间排序。

所以你有两个选择：

在 InstallInitialize 和 InstallFinalize 之间移动操作的执行。

将执行更改为“立即”。 In some cases this way isn't recomended，一切都取决于你的目的。

<CustomAction
 Id="CA_EditScriptAction"
 Return="check"
 Execute="immediate"
 Impersonate="no"
 BinaryKey="CustomActions"
 DllEntry="EditScriptAction"
/>

并将您的 CustomAction 更改为

[CustomAction]
public static ActionResult EditWebsharkScriptAction(Session session)
{            
    var install_dir = session["INSTALLFOLDER"];
    session.Log("CUSTOM_DEBUG: " + install_dir);
    var files = Directory.GetFiles(install_dir); 
}

Answer 2

问题出在我将属性传递给自定义操作的过程中。

我过去是通过属性元素来完成的，但是如果是延迟的自定义操作，我必须通过另一个 CustomAction 元素来传递它们，如此 answer.

中所示

Unfortunately this will work in immediate CA only, this means that if you want to use the value of this property in a deferred CA you will need to have two custom actions:

CA 1 to set the CustomActionData for the CA executed as immediate. (Remember to name the property with the same name defined for your CustomAction.

CA 2 the CA with the specific logic that consumes CustomActionData.

如何防止 C# 将临时路径作为原始路径的前缀？

How do I prevent C# from prefixing the temporary path to my original path?

c#

windows-installer

wix

wix3