C#操作注册表

usingMicrosoft.Win32;

这个命名空间包含了注册表相关的类。Registry类、RegistryKey类。

Registry类封装了注册表的七个基本主键：

Registry.ClassesRoot

对应于HKEY_CLASSES_ROOT主键

Registry.CurrentUser

对应于HKEY_CURRENT_USER主键

Registry.LocalMachine

对应于HKEY_LOCAL_MACHINE主键

Registry.User

对应于HKEY_USER主键

Registry.CurrentConfig

对应于HEKY_CURRENT_CONFIG主键

Registry.DynDa

对应于HKEY_DYN_DATA主键

Registry.PerformanceData

对应于HKEY_PERFORMANCE_DATA主键

RegistryKey类封装了对注册表的基本操作。包括读、写、删等操作的常用函数：

三注册表项的创建、打开、删除1，创建

//使用CreateSubKey()在SOFTWARE下创建子项testRegistryKeyhklm=Registry.LocalMachine;RegistryKeyhkSoftWare=hklm.CreateSubKey(@"SOFTWARE\test");hklm.Close();hkSoftWare.Close();

//使用OpenSubKey()打开项，获得RegistryKey对象，当路径不存在时，为Null。第二个参数为true，表示可写，可读，可删；省略时只能读。RegistryKeyhklm=Registry.LocalMachine;RegistryKeyhkSoftWare=hklm.OpenSubKey(@"SOFTWARE\test",true);hklm.Close();hkSoftWare.Close();

//主要用到了DeleteSubKey(),删除test项RegistryKeyhklm=Registry.LocalMachine;hklm.DeleteSubKey(@"SOFTWARE\test",true);//为true时，删除的注册表不存在时抛出异常；当为false时不抛出异常。hklm.Close();

//主要用到了SetValue()，表示在test下创建名称为Name，值为RegistryTest的键值。第三个参数表示键值类型，省略时，默认为字符串RegistryKeyhklm=Registry.LocalMachine;RegistryKeyhkSoftWare=hklm.OpenSubKey(@"SOFTWARE\test",true);hkSoftWare.SetValue("Name","RegistryTest",RegistryValueKind.String);hklm.Close();hkSoftWare.Close();

//主要用到了GetValue(),获得名称为"Name"的键值RegistryKeyhklm=Registry.LocalMachine;RegistryKeyhkSoftWare=hklm.OpenSubKey(@"SOFTWARE\test",true);stringsValue=hkSoftWare.GetValue("Name").ToString();hklm.Close();hkSoftWare.Close();

//主要用到了DeleteValue(),表示删除名称为"Name"的键值，第二个参数表示是否抛出异常RegistryKeyhklm=Registry.LocalMachine;RegistryKeyhkSoftWare=hklm.OpenSubKey(@"SOFTWARE\test",true);hkSoftWare.DeleteValue("Name",true);hklm.Close();hkSoftWare.Close();

//判断注册表项是否存在privateboolIsRegistryKeyExist(stringsKeyName){string[]sKeyNameColl;RegistryKeyhklm=Registry.LocalMachine;RegistryKeyhkSoftWare=hklm.OpenSubKey(@"SOFTWARE");sKeyNameColl=hkSoftWare.GetSubKeyNames();//获取SOFTWARE下所有的子项foreach(stringsNameinsKeyNameColl){if(sName==sKeyName){hklm.Close();hkSoftWare.Close();returntrue;}}hklm.Close();hkSoftWare.Close();returnfalse;}//判断键值是否存在privateboolIsRegistryValueNameExist(stringsValueName){string[]sValueNameColl;RegistryKeyhklm=Registry.LocalMachine;RegistryKeyhkTest=hklm.OpenSubKey(@"SOFTWARE\test");sValueNameColl=hkTest.GetValueNames();//获取test下所有键值的名称foreach(stringsNameinsValueNameColl){if(sName==sValueName){hklm.Close();hkTest.Close();returntrue;}}hklm.Close();hkTest.Close();returnfalse;}

//开启程序自启动stringpath=Application.ExecutablePath;RegistryKeyrk=Registry.LocalMachine;RegistryKeyrk2=rk.CreateSubKey(@"Software\Microsoft\Windows\CurrentVersion\Run");rk2.SetValue("JcShutdown",path);rk2.Close();rk.Close();//关闭程序自启动stringpath=Application.ExecutablePath;RegistryKeyrk=Registry.LocalMachine;RegistryKeyrk2=rk.CreateSubKey(@"Software\Microsoft\Windows\CurrentVersion\Run");rk2.DeleteValue("JcShutdown",false);rk2.Close();rk.Close();