C#操作注册表实例详解__RegistryKey_OpenSubKey_string_name_LocalMachine_

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C#操作注册表实例详解

来源: 互联网发布时间：2014-08-30

本文导语: 1、读取指定名称的注册表的值代码示例: private string GetRegistData(string name) { string registData; RegistryKey hkml = Registry.LocalMachine; RegistryKey software = hkml.OpenSubKey("SOFTWARE",true); RegistryKey aimdir = software.OpenSubKey("XXX"...

1、读取指定名称的注册表的值

代码示例:

private string GetRegistData(string name) 

{ 

   string registData; 

   RegistryKey hkml = Registry.LocalMachine; 

   RegistryKey software = hkml.OpenSubKey("SOFTWARE",true); 

   RegistryKey aimdir = software.OpenSubKey("XXX",true); 

   registData = aimdir.GetValue(name).ToString(); 

   return registData; 

}

代码说明：读取的注册表中HKEY_LOCAL_MACHINESOFTWARE目录下的XXX目录中名称为name的注册表值；

2、向注册表中写数据

代码示例:

private void WTRegedit(string name,string tovalue) 

{ 

   RegistryKey hklm = Registry.LocalMachine; 

   RegistryKey software = hklm.OpenSubKey("SOFTWARE",true); 

   RegistryKey aimdir = software.CreateSubKey("XXX"); 

   aimdir.SetValue(name,tovalue); 

}

代码说明：在注册表中HKEY_LOCAL_MACHINESOFTWARE目录下新建XXX目录并在此目录下创建名称为name值为tovalue的注册表项；

3、删除注册表中指定的注册表项

代码示例:

private void DeleteRegist(string name) 

{ 

   string[] aimnames; 

   RegistryKey hkml = Registry.LocalMachine; 

   RegistryKey software = hkml.OpenSubKey("SOFTWARE",true); 

   RegistryKey aimdir = software.OpenSubKey("XXX",true); 

   aimnames = aimdir.GetSubKeyNames(); 

   foreach(string aimKey in aimnames) 

   { 

    if(aimKey == name) 

     aimdir.DeleteSubKeyTree(name); 

   } 

}

代码说明：在注册表中HKEY_LOCAL_MACHINESOFTWARE目录下XXX目录中删除名称为name注册表项；

4、判断指定注册表项是否存在

代码示例:

private bool IsRegeditExit(string name) 

{ 

   bool _exit = false; 

   string[] subkeyNames; 

   RegistryKey hkml = Registry.LocalMachine; 

   RegistryKey software = hkml.OpenSubKey("SOFTWARE",true); 

   RegistryKey aimdir = software.OpenSubKey("XXX",true); 

   subkeyNames = aimdir.GetSubKeyNames(); 

   foreach(string keyName in subkeyNames) 

   { 

    if(keyName == name) 

    { 

       _exit = true; 

       return _exit; 

    } 

   } 

   return _exit; 

}

代码说明：在注册表中HKEY_LOCAL_MACHINESOFTWARE目录下XXX目录中判断名称为name注册表项是否存在，这一方法在删除注册表时已经存在，在新建一注册表项时也应有相应判断；

示例：

代码示例:

using Microsoft.Win32;

using System.Diagnostics;

private void Access_Registry()

{

   // 在HKEY_LOCAL_MACHINESoftware下建立一新键，起名为MCBInc

     RegistryKey key = Registry.LocalMachine.OpenSubKey("Software", true);

   // 增加一个子键 www.

   RegistryKey newkey = key.CreateSubKey("MCBInc");

   // 设置此子键的值

   newkey.SetValue("MCBInc", "NET Developer");

  // 从注册表的其他地方获取数据

  // 找出你的CPU

  RegistryKey pRegKey = Registry.LocalMachine;

  pRegKey = pRegKey.OpenSubKey("HARDWARE\DESCRIPTION\System\CentralProcessor\0");

  Object val = pRegKey.GetValue("VendorIdentifier");

  Debug.WriteLine("The central processor of this machine is:"+ val);

  // 删除键值

  RegistryKey delKey = Registry.LocalMachine.OpenSubKey("Software", true);

  delKey.DeleteSubKey("MCBInc");

}