[C#]注册表操作

创建/修改

RegistryKey theRegistryKey = Registry.CurrentUser;
theRegistryKey.CreateSubKey("MyApp");
theRegistryKey.SetValue("MyValue0", "MyValueData0");
theRegistryKey.SetValue("MyValue1", "MyValueData1");

RegistryKey theRegistrySubKey = Registry.CurrentUser.CreateSubKey("MyApp\\DEMO");
theRegistrySubKey.SetValue("MyValue2", "MyValueData2");
theRegistrySubKey.SetValue("MyValue3", "MyValueData3");
theRegistryKey.Close();
theRegistrySubKey.Close();

打开/读取

RegistryKey theRegistryKey = Registry.CurrentUser;
//RegistryKey theRegistrySubKey = Registry.CurrentUser.CreateSubKey("MyApp\\DEMO");
RegistryKey theRegistrySubKey = Registry.CurrentUser.OpenSubKey("MyApp\\DEMO");
Console.WriteLine(theRegistryKey.GetValue("MyValue0"));
Console.WriteLine(theRegistryKey.GetValue("MyValue1"));
Console.WriteLine(theRegistrySubKey.GetValue("MyValue2"));
Console.WriteLine(theRegistrySubKey.GetValue("MyValue3"));
theRegistryKey.Close();
theRegistrySubKey.Close();

删除

RegistryKey theRegistryKey = Registry.CurrentUser;
RegistryKey theRegistrySubKey = Registry.CurrentUser.OpenSubKey("MyApp",true);
theRegistryKey.DeleteValue("MyValue0");
theRegistrySubKey.DeleteSubKeyTree("DEMO");
theRegistryKey.DeleteSubKey("MyApp");
theRegistryKey.Close();
theRegistrySubKey.Close();

判断项是否存在

private bool RegExist()
{
    string[] strSubNames;
    RegistryKey theRegistryKey = Registry.CurrentUser;
    RegistryKey theRegistrySubKey = theRegistryKey.OpenSubKey("MyApp\\DEMO");
    strSubNames = theRegistrySubKey.GetSubKeyNames();
    foreach (string strSubName in strSubNames)
    {
        if (strSubName == "MyValue0")
        {
            theRegistryKey.Close();
            theRegistrySubKey.Close();
            return true;
        }
    }
    theRegistryKey.Close();
    theRegistrySubKey.Close();
    return false;
}

判断值是否存在

private bool RegKeyExist()
{
    string[] strKeyNames;
    RegistryKey theRegistryKey = Registry.CurrentUser;
    RegistryKey theRegistrySubKey = theRegistryKey.OpenSubKey("MyApp\\DEMO");
    strKeyNames = theRegistrySubKey.GetValueNames();
    foreach (string strKeyName in strKeyNames)
    {
        if (strKeyName == "MyValue2")
        {
            theRegistryKey.Close();
            theRegistrySubKey.Close();
            return true;
        }
    }
    theRegistryKey.Close();
    theRegistrySubKey.Close();
    return false;
}