一、引入定名空间：
using Microsoft.Win32;
二、创建注册表项：CreateSubKey（name）要领
添加SubKey时候首先要打开一个表项，并设置参数为true，才华告成创建子项
//给要创建的注册表设置一个变量，使用更便利
private string RegistFileName = "test";
/// <summary> /// 创建一个test注册表项,下面包罗OpenLog，和SaveLog两个子项 /// </summary> private void CreateRegistFile() {
//SOFTWARE在LocalMachine分支下
RegistryKey key = Registry.LocalMachine.OpenSubKey("SOFTWARE",true); RegistryKey software = key.CreateSubKey(RegistFileName); RegistryKey test = key.OpenSubKey(RegistFileName,true); RegistryKey Savekey = test.CreateSubKey("SaveLog"); }
三、删除注册表项：DeleteSubKey（name，true）要领
RegistryKey key = Registry.LocalMachine; RegistryKey software = key.OpenSubKey("SOFTWARE", true); RegistryKey test = software.OpenSubKey(RegistFileName, true); test.DeleteSubKey("SaveLog",true);
四、添加键值：SetValue（name,value）要领
/// <summary> /// 将path写入OPenLog子项 /// </summary> private void writeToRegistFile(string path) {
RegistryKey key = Registry.LocalMachine;
RegistryKey software = key.OpenSubKey("SOFTWARE", true);
RegistryKey test = software.OpenSubKey(RegistFileName, true);
RegistryKey OpenPath = test.OpenSubKey("OpenLog",true);
//"name"是该键值的name，，相当于一个别号，可自行设置
OpenPath.SetValue("name", path); }
五、删除键值：DeleteValue（name）要领
RegistryKey key = Registry.LocalMachine; RegistryKey software = key.OpenSubKey("SOFTWARE", true); RegistryKey test = software.OpenSubKey(RegistFileName, true);
RegistryKey OpenPath = test.OpenSubKey("SaveLog",true);
//删除SaveLog子项下的名为SaveLog的子键
OpenPath.DeleteValue("name");
六、判断注册表项是否存在：
/// <summary> /// 判断注册表项是否存在 /// </summary> /// <returns>bool</returns> private bool IsRegeditItemExist() { string[] subkeyNames; RegistryKey key = Registry.LocalMachine; RegistryKey software = key.OpenSubKey("SOFTWARE"); subkeyNames = software.GetSubKeyNames(); //在这里我是判断test表项是否存在 foreach (string keyName in subkeyNames) { if (keyName == RegistFileName) { key.Close(); return true; } } key.Close(); return false; }
七、判断键值是否存在：
/// <summary> /// 判断该路径是否已经存在 /// </summary> /// <param>路径</param> /// <returns></returns> private bool IsRegeditKeyExit(string name) {string[] saveSubkeyNames; RegistryKey key = Registry.LocalMachine; RegistryKey software = key.OpenSubKey("SOFTWARE", true); RegistryKey test = software.OpenSubKey(RegistFileName, true); RegistryKey Savekey = test.OpenSubKey("SaveLog", true);
//获取该子项下的所有键值的名称saveSubkeyNames saveSubkeyNames = Savekey.GetSubKeyNames(); foreach(string keyName in openSubkeyNames) { if(keyName == name) { key.Close(); return false; } } key.Close(); return true; }
注：如果没有该注册表项或键值，则返回的值为空值，若不经措置惩罚惩罚运行措施会抛出异常。