C# 读取注册表和 Wow6432Node 键
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/2039186/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Reading the registry and Wow6432Node key
提问by Jade M
I have some code that reads the registry and looks for a value in HKEY_LOCAL_MACHINE\Software\App\but when running on 64-bit versions of Windows the value is under HKEY_LOCAL_MACHINE\Software\Wow6432Node\App\.
我有一些代码可以读取注册表并在 中查找值，HKEY_LOCAL_MACHINE\Software\App\但是在 64 位版本的 Windows 上运行时，该值低于HKEY_LOCAL_MACHINE\Software\Wow6432Node\App\.
How should I best approach this? Do I need a 64-bit installer or should I rewrite my code to detect both places?
我应该如何最好地解决这个问题？我需要 64 位安装程序还是应该重写我的代码来检测这两个位置？
采纳答案by Arve
If you mark you C# program as x86 (and not Any CPU) then it will see HKEY_LOCAL_MACHINE\Software\Wow6432Node\Appas HKEY_LOCAL_MACHINE\Software\App\.
如果您将 C# 程序标记为 x86（而不是任何 CPU），那么它将显示HKEY_LOCAL_MACHINE\Software\Wow6432Node\App为HKEY_LOCAL_MACHINE\Software\App\.
A .NET program for Any CPU will run as a 64-bit process if 64-bit .NET is installed. The 32-bit registry is under the Wow6432Nodefor 64-bit programs.
如果安装了 64 位 .NET，则适用于任何 CPU 的 .NET 程序将作为 64 位进程运行。32 位注册表位于Wow6432Node64 位程序下。
回答by Wallace Kelly
On an x64 machine, here is an example of how to access the 32-bit view of the registry:
在 x64 机器上，以下是如何访问注册表的 32 位视图的示例：
using (var view32 = RegistryKey.OpenBaseKey(RegistryHive.CurrentUser,
RegistryView.Registry32))
{
using (var clsid32 = view32.OpenSubKey(@"Software\Classes\CLSID\", false))
{
// actually accessing Wow6432Node
}
}
... as compared to...
... 相比于...
using (var view64 = RegistryKey.OpenBaseKey(RegistryHive.CurrentUser,
RegistryView.Registry64))
{
using (var clsid64 = view64.OpenSubKey(@"Software\Classes\CLSID\", true))
{
....
}
}
回答by VladL
+1 to Wally's answer, but his solution works for .NET 4.0 and higher.
+1 对 Wally 的回答，但他的解决方案适用于 .NET 4.0 及更高版本。
I've found another solution, which also works for .NET 2.0 here
我找到了另一个解决方案，它也适用于 .NET 2.0 here
#region RegHelper
enum RegSAM
{
QueryValue = 0x0001,
SetValue = 0x0002,
CreateSubKey = 0x0004,
EnumerateSubKeys = 0x0008,
Notify = 0x0010,
CreateLink = 0x0020,
WOW64_32Key = 0x0200,
WOW64_64Key = 0x0100,
WOW64_Res = 0x0300,
Read = 0x00020019,
Write = 0x00020006,
Execute = 0x00020019,
AllAccess = 0x000f003f
}
static class RegHive
{
public static UIntPtr HKEY_LOCAL_MACHINE = new UIntPtr(0x80000002u);
public static UIntPtr HKEY_CURRENT_USER = new UIntPtr(0x80000001u);
}
static class RegistryWOW6432
{
[DllImport("Advapi32.dll")]
static extern uint RegOpenKeyEx(UIntPtr hKey, string lpSubKey, uint ulOptions, int samDesired, out int phkResult);
[DllImport("Advapi32.dll")]
static extern uint RegCloseKey(int hKey);
[DllImport("advapi32.dll", EntryPoint = "RegQueryValueEx")]
public static extern int RegQueryValueEx(int hKey, string lpValueName, int lpReserved, ref uint lpType, System.Text.StringBuilder lpData, ref uint lpcbData);
static public string GetRegKey64(UIntPtr inHive, String inKeyName, string inPropertyName)
{
return GetRegKey64(inHive, inKeyName, RegSAM.WOW64_64Key, inPropertyName);
}
static public string GetRegKey32(UIntPtr inHive, String inKeyName, string inPropertyName)
{
return GetRegKey64(inHive, inKeyName, RegSAM.WOW64_32Key, inPropertyName);
}
static public string GetRegKey64(UIntPtr inHive, String inKeyName, RegSAM in32or64key, string inPropertyName)
{
//UIntPtr HKEY_LOCAL_MACHINE = (UIntPtr)0x80000002;
int hkey = 0;
try
{
uint lResult = RegOpenKeyEx(RegHive.HKEY_LOCAL_MACHINE, inKeyName, 0, (int)RegSAM.QueryValue | (int)in32or64key, out hkey);
if (0 != lResult) return null;
uint lpType = 0;
uint lpcbData = 1024;
StringBuilder AgeBuffer = new StringBuilder(1024);
RegQueryValueEx(hkey, inPropertyName, 0, ref lpType, AgeBuffer, ref lpcbData);
string Age = AgeBuffer.ToString();
return Age;
}
finally
{
if (0 != hkey) RegCloseKey(hkey);
}
}
}
#endregion
Usage:
用法：
string value64 = RegistryWOW6432.GetRegKey64(RegHive.HKEY_LOCAL_MACHINE, @"SOFTWARE\Microsoft\Windows NT\CurrentVersion", "RegisteredOrganization");
string value32 = RegistryWOW6432.GetRegKey32(RegHive.HKEY_LOCAL_MACHINE, @"SOFTWARE\Microsoft\Windows NT\CurrentVersion", "RegisteredOrganization");
回答by redditmerc
Here's an all-in-one solution that would cover x32 / x64 systems and capture apps installed on local machine or user account.
这是一个多合一的解决方案，它将涵盖 x32 / x64 系统并捕获安装在本地计算机或用户帐户上的应用程序。
public class InstalledProgramInfo
{
public string name;
public string path;
}
public static InstalledProgramInfo FindInstalledApp(string findname, bool dump = false)
{
if (String.IsNullOrEmpty(findname)) return null;
string uninstallKey = @"SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall";
RegistryHive[] keys = new RegistryHive[] { RegistryHive.CurrentUser, RegistryHive.LocalMachine };
RegistryView[] views = new RegistryView[] { RegistryView.Registry32, RegistryView.Registry64 };
foreach (var hive in keys)
{
foreach (var view in views)
{
RegistryKey rk = null,
basekey = null;
try
{
basekey = RegistryKey.OpenBaseKey(hive, view);
rk = basekey.OpenSubKey(uninstallKey);
}
catch (Exception ex) { continue; }
if (basekey == null || rk == null)
continue;
if (rk == null)
{
if (dump) Console.WriteLine("ERROR: failed to open subkey '{0}'", uninstallKey);
return null;
}
if (dump) Console.WriteLine("Reading registry at {0}", rk.ToString());
foreach (string skName in rk.GetSubKeyNames())
{
try
{
RegistryKey sk = rk.OpenSubKey(skName);
if (sk == null) continue;
object skname = sk.GetValue("DisplayName");
object skpath = sk.GetValue("InstallLocation");
if (skpath == null)
{
skpath = sk.GetValue("UninstallString");
if (skpath == null) continue;
FileInfo fi = new FileInfo(skpath.ToString());
skpath = fi.Directory.FullName;
}
if (skname == null || skpath == null) continue;
string thisname = skname.ToString();
string thispath = skpath.ToString();
if (dump) Console.WriteLine("{0}: {1}", thisname, thispath);
if (!thisname.Equals(findname, StringComparison.CurrentCultureIgnoreCase))
continue;
InstalledProgramInfo inf = new InstalledProgramInfo();
inf.name = thisname;
inf.path = thispath;
return inf;
}
catch (Exception ex)
{
// todo
}
}
} // view
} // hive
return null;
}
