不能在c#中写入到HKEY_CURRENT_USER registrykey

I've searched google and the answers here for a while now and come to the conclusion that when writing to the registry, HKEY_CURRENT_USER should be available without UAC, correct? This is what every thread seem to state anyway. My problems is that I get an access denied error when trying to access this key and writing a new value. Is this due to there being something wrong with my registry or am I doing something wrong? Here's the code I'm using:I've searched google and the answers here for a