读取注册表时怪异的行为在C＃ [英] Weird behaviour when reading registry in C#

问题描述

可能重复：
   C＃WOW6432注册表节点messin东西

这是在code：

var b1 = Registry.LocalMachine.OpenSubKey("software", true); 
var b2 = Registry.LocalMachine.OpenSubKey("software", true).OpenSubKey("company");
var r1 = Registry.LocalMachine.OpenSubKey("software").OpenSubKey("company").GetValueNames();
string resultString = Registry.LocalMachine.OpenSubKey("Software", true).CreateSubKey("company").GetValue(name).ToString();

我用名称 = ApplicationDirectory调用它。在最后一行，前两个变量指向（根据其名称属性）的正确位置。问题是与 R1 ，其中没有列出 HKEY_LOCAL_MACHINE \ SOFTWARE \公司的内容，而是 HKEY_LOCAL_MACHINE \ SOFTWARE \ Wow6432Node \公司。为什么是这样？这是在64位机器上的一些重定向？

I invoke it with name = "ApplicationDirectory". At the last line, the first two variables point to the correct locations (based on their Name property). The problem is with r1, which doesn't list the contents of HKEY_LOCAL_MACHINE\SOFTWARE\company, but rather HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\company. Why is this? Is this some redirection in 64-bit machines?

推荐答案

是的，有一个重定向在64位机32位应用程序。看评论就你的问题，同时也这太回答。

Yes, there is a redirection for 32-bit applications on 64-bit machines. See comments on your question, and also this SO answer.

如果你面向.NET 4或以上，你就可以同时访问 Wow6432Node （用于32位应用程序）和标准节点（一用于64位应用程序）为 RegistryKey.OpenBaseKey 方法提供类型 RegistryView 允许的参数选择正确的节点使用。

If you target .Net 4 or above, you'll be able to access both Wow6432Node (used for 32-bit applications) and "standard" node (the one used for 64-bit applications) as RegistryKey.OpenBaseKey method provides a parameter of type RegistryView that allows choosing the correct node to use.

如果您正在使用.net 3.5或previous版本，那么你就必须使用的P / Invoke，如果你希望能够在64位计算机上读取两个32/64位注册表项。你将不得不使用 RegOpenKeyEx的并指定 KEY_WOW64_32KEY 作为标志所需的访问。但是，这又是一个故事，你的问题的范围。

If you're using .Net 3.5 or previous version, then you'll have to use P/Invoke if you want to be able to read both 32/64 bit registry keys on a 64-bit machine. You'll have to use RegOpenKeyEx and specify KEY_WOW64_32KEY as flag for desired access. But this is another story and out of the scope of your question.

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