C# Create Values in Registry Local Machine -

this not working me:

public bool createregistry() {     if (!registryexists())     {         microsoft.win32.registry.localmachine.createsubkey("software\\xelo\\");          microsoft.win32.registry.localmachine.opensubkey("software\\xelo").setvalue("hostname", (string)hostname, microsoft.win32.registryvaluekind.string);           return true;     }     else     {         return updateregistry();     } 

}

the exception error not authorized this. apreaciated

exeption: system.unauthorizedaccessexception | "cannot write registry key"

for working answer read comment on accepted solution

non-admin , unelevated admin users don't have rights modify hkey_local_machine key. run program 'as administrator'.