读取注册表项＃1

Question

I wrote a firefox extension and I want to check that it is loaded from a service developed in visual studio 2010 c#. I have researched and tried numerous different methods to read a key and all I get is: "Registry read failed: System.NullReferenceException: Object reference not set to an instance of an object." Here is one method I used:

RegistryKey rKey1 = Registry.CurrentUser;
RegistryKey rKey2 = rKey1.OpenSubKey("Software\\Mozilla\\Firefox\\Extensions");
string strKeyValue = rKey2.GetValue("thing@place.com").ToString();

Answer 1

Remember that your service runs under the account that is specified on the service configuration, so it's HKCU may be different than the current user that may be logged into the machine. To test your code, try running the service under your user account instead of Local System, which is probably what it is running under now.