C#操作注册表

1.读取指定名称的注册表的值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;}以上是读取的注册表中HKEY_LOCAL_MACHINE/SOFTWARE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);}以上是在注册表中HKEY_LOCAL_MACHINE/SOFTWARE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);}}以上是在注册表中HKEY_LOCAL_MACHINE/SOFTWARE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private bool IsRegeditExit(string name){bool _exit = false;try{string[] subkeyNames;RegistryKey hkml = Registry.LocalMachine;RegistryKey software = hkml.OpenSubKey("SOFTWARE", true);RegistryKey aimdir = software.OpenSubKey("Weather", true);subkeyNames = aimdir.GetValueNames();foreach (string keyName in subkeyNames){if (keyName == name){_exit = true;return _exit;}}}catch{ }return _exit;}以上是在注册表中HKEY_LOCAL_MACHINE/SOFTWARE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；一个例子：

using Microsoft.Win32;

using System.Diagnostics;

private void Access_Registry()

{

// 在HKEY_LOCAL_MACHINE/Software下建立一新键，起名为MCBInc

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

// 增加一个子键

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");

    }