从 32 位应用程序读取 64 位注册表 [英] Reading 64bit Registry from a 32bit application

问题描述

我有一个为 AnyCPU 编译的 c# 单元测试项目.我们的构建服务器是 64 位机器，并安装了 64 位 SQL Express 实例.

测试项目使用类似于以下的代码来识别 .MDF 文件的路径:

私有字符串 GetExpressPath(){RegistryKey sqlServerKey = Registry.LocalMachine.OpenSubKey(@SOFTWAREMicrosoftMicrosoft SQL ServerInstance NamesSQL");string sqlExpressKeyName = (string) sqlServerKey.GetValue(SQLEXPRESS");RegistryKey sqlInstanceSetupKey = sqlServerKey.OpenSubKey( sqlExpressKeyName + @Setup");返回 sqlInstanceSetupKey.GetValue(SQLDataRoot").ToString();}

这段代码在我们的 32 位工作站上运行良好，并且在构建服务器上运行正常，直到我最近使用 NCover 启用了代码覆盖率分析.由于 NCover 使用 32 位 COM 组件，因此测试运行程序 (Gallio) 作为 32 位进程运行.

检查注册表，没有实例名称"；下键

<块引用>

HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftMicrosoft SQL Server

有没有办法让运行在 32 位模式下的应用程序访问 Wow6432Node 之外的注册表?

解决方案

您必须在创建/打开注册表项时使用 KEY_WOW64_64KEY 参数.但是 AFAIK 不能使用 Registry 类，而只能在直接使用 API 时.

这可能有助于您入门.>

I have a c# unit test project that is compiled for AnyCPU. Our build server is a 64bit machine, and has a 64bit SQL Express instance installed.

The test project uses code similar to the following to identify the path to the .MDF files:

private string GetExpressPath()
{
    RegistryKey sqlServerKey = Registry.LocalMachine.OpenSubKey( @"SOFTWAREMicrosoftMicrosoft SQL ServerInstance NamesSQL" );
    string sqlExpressKeyName = (string) sqlServerKey.GetValue( "SQLEXPRESS" );
    RegistryKey sqlInstanceSetupKey = sqlServerKey.OpenSubKey( sqlExpressKeyName + @"Setup" );
    return sqlInstanceSetupKey.GetValue( "SQLDataRoot" ).ToString();
}

This code works fine on our 32bit workstations, and did work ok on the build server until I recently enabled code coverage analysis with NCover. Because NCover uses a 32bit COM component, the test runner (Gallio) runs as a 32bit process.

Checking the registry, there is no "Instance Names" key under

HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftMicrosoft SQL Server

Is there a way for an application running in 32bit mode to access the registry outside Wow6432Node?

解决方案

you have to use the KEY_WOW64_64KEY param when creating/opening the registry key. But AFAIK that's not possible with the Registry class but only when using the API directly.

This might help to get you started.

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