如何从 64 位 .NET 应用程序打开 WOW64 注册表项
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How to open a WOW64 registry key from a 64-bit .NET application
提问by marijne
My .NET application (any-CPU) needs to read a registry value created by a 32-bit program. On 64-bit Windows this goes under the Wow6432Node key in the registry. I have read that you shouldn't hard-code to the Wow6432Node, so what's the right way to access it with .NET?
我的 .NET 应用程序（任何 CPU）需要读取由 32 位程序创建的注册表值。在 64 位 Windows 上，这位于注册表中的 Wow6432Node 项下。我已经读到您不应该对 Wow6432Node 进行硬编码，那么使用 .NET 访问它的正确方法是什么？
采纳答案by JaredPar
In the case where you explicitly need to read a value written by a 32 bit program in a 64 bit program, it's OK to hard code it. Simply because there really is no other option.
如果您明确需要在 64 位程序中读取 32 位程序写入的值，则可以对其进行硬编码。仅仅因为真的没有其他选择。
I would of course abstract it out to a helper function. For example
我当然会把它抽象成一个辅助函数。例如
public RegistryKey GetSoftwareRoot() {
var path = 8 == IntPtr.Size
? @"Software\Wow6432Node"
: @"Software";
return Registry.CurrentUser.OpenSubKey(path);
}
回答by woany
If you can change the target .Net version to v4, then you can use the new OpenBaseKey function e.g.
如果您可以将目标 .Net 版本更改为 v4，那么您可以使用新的 OpenBaseKey 函数，例如
RegistryKey registryKey;
if (Environment.Is64BitOperatingSystem == true)
{
registryKey = RegistryKey.OpenBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, RegistryView.Registry64);
}
else
{
registryKey = RegistryKey.OpenBaseKey(Microsoft.Win32.RegistryHive.LocalMachine, RegistryView.Registry32);
}
回答by Anders
The correct way would be to call the native registry api and passing the KEY_WOW64_32KEYflag to RegOpenKeyEx/RegCreateKeyEx
正确的方法是调用本机注册表 api 并将KEY_WOW64_32KEY标志传递给 RegOpenKeyEx/RegCreateKeyEx
回答by Ruben Bartelink
Extending Anders's answer, there's a good example of wrapping the resulting handle in a .NET RegistryKey object on Shahar Prish's blog- be sure to read the comments too though.
扩展安德斯的答案，在 Shahar Prish 的博客上有一个很好的例子，将生成的句柄包装在 .NET RegistryKey 对象中- 不过一定要阅读评论。
Note that unvarnished use of the pinvoke.net wrapper of RegOpenKeyExis fraught with issues.
请注意，未经修饰地使用RegOpenKeyEx 的 pinvoke.net 包装器充满了问题。
