通过C#在Windows注册表中创建REG_NONE空值 [英] Create a REG_NONE empty value in the Windows Registry via C#

问题描述

如何在类型为REG_NONE的Windows注册表中创建一个空值?

例如，对于此密钥:

 HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\
  .htm\OpenWithProgids
 

以下是我在Windows 7计算机上看到的值:

 ----------------------------------------------------
Name           Type       Data
----------------------------------------------------
(Default)      REG_SZ     (value not set)
FirefoxHTML    REG_NONE   (zero-length binary value)
htmlfile       REG_NONE   (zero-length binary value)
----------------------------------------------------
 

具体来说，我如何声明和初始化类型为零长度二进制值"的变量，以将其传递给解决方案

[这是我的研究结果.]

我在Microsoft的 RegistryKey的参考源中找到了正在寻找的提示. .cs :

 byte[] value = new byte[0];
 

具体来说，调用 RegistryKey.SetValue 其中:

• name设置为您想要的密钥名称，
• value设置为空字节数组，并且
• valueKind设置为 RegistryValueKind.None .

  using Microsoft.Win32;

 RegistryKey key; // set via 'CreateSubKey' or 'OpenSubKey'
 key.SetValue("KeyName", new byte[0], RegistryValueKind.None);
 

但是，请注意，至少对于出现在OpenWithProgids键中的值，Windows似乎也将空字符串值视为等效:

  key.SetValue("KeyName", string.Empty, RegistryValueKind.String);
 

例如，对于此密钥:

 HKEY_CLASSES_ROOT\.vcxproj\OpenWithProgids
 

以下是我在计算机上看到的值:

 ---------------------------------------------------------------
Name                                  Type      Data
---------------------------------------------------------------
(Default)                             REG_SZ    (value not set)
Expression.Blend.vcsproj.12.0         REG_SZ
VisualStudio.Launcher.vcxproj.10.0    REG_SZ
VisualStudio.Launcher.vcxproj.12.0    REG_SZ
VisualStudio.vcxproj.10.0             REG_SZ
VisualStudio.vcxproj.12.0             REG_SZ
---------------------------------------------------------------
 

相关:请参见此答案和HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\ .htm\OpenWithProgids

Here are the values that I see on my Windows 7 machine:

----------------------------------------------------
Name           Type       Data
----------------------------------------------------
(Default)      REG_SZ     (value not set)
FirefoxHTML    REG_NONE   (zero-length binary value)
htmlfile       REG_NONE   (zero-length binary value)
----------------------------------------------------

Specifically, how do I declare and initialize a variable of type "zero-length binary value" for the purpose of passing it to RegistryKey.SetValue? Note that I could not find the help that I needed in the documentation for the RegistryValueKind enumeration.

解决方案

[Here is the result of my research.]

I found the hint I was looking for in Microsoft's reference source for RegistryKey.cs:

byte[] value = new byte[0];

Specifically, call RegistryKey.SetValue where:

• name is set to the name you want for the key,
• value is set to an empty byte array, and
• valueKind is set to RegistryValueKind.None.

 using Microsoft.Win32;

 RegistryKey key; // set via 'CreateSubKey' or 'OpenSubKey'
 key.SetValue("KeyName", new byte[0], RegistryValueKind.None);

However, note that at least for values that appear in an OpenWithProgids key, Windows also appears to treat empty string values as equivalent:

 key.SetValue("KeyName", string.Empty, RegistryValueKind.String);

For instance, for this key:

HKEY_CLASSES_ROOT\.vcxproj\OpenWithProgids

Here are the values that I see on my machine:

---------------------------------------------------------------
Name                                  Type      Data
---------------------------------------------------------------
(Default)                             REG_SZ    (value not set)
Expression.Blend.vcsproj.12.0         REG_SZ
VisualStudio.Launcher.vcxproj.10.0    REG_SZ
VisualStudio.Launcher.vcxproj.12.0    REG_SZ
VisualStudio.vcxproj.10.0             REG_SZ
VisualStudio.vcxproj.12.0             REG_SZ
---------------------------------------------------------------

Related: See this answer and this answer for examples for how to set the data of a Registry value of type RegistryValueKind.Binary to a non-empty byte array.

这篇关于通过C#在Windows注册表中创建REG_NONE空值的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！