Receive notification when RegistryKey Value was changed

Question

I want a notification when a specific RegistryKey in HKEY_CURRENT_USER is changed. So far I tried this via WMI with no success:

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Answer 1

Uploaded to pastbin a nice class that does it. Hope it fits your needs.

http://www.csharp.pastebin.com/0reFh6v2

Answer 2

I finally solved the problem and got the WMI query version to work:

var currentUser = WindowsIdentity.GetCurrent();
var query = new WqlEventQuery(string.Format(
"SELECT * FROM RegistryValueChangeEvent WHERE Hive='HKEY_USERS' AND KeyPath='{0}\\\\{1}' AND ValueName='{2}'",
currentUser.User.Value, keyPath.Replace("\\","\\\\"), valueName));
_watcher = new ManagementEventWatcher(query);
_watcher.EventArrived += (sender, args) => KeyValueChanged();
_watcher.Start();

I found this "hack" at http://www.codeproject.com/Messages/2844468/Monitoring-HKEY_CURRENT_USER.aspx