event keyword and accessors...

Question

The devil is in the details.... Consider: public delegate void HandlerDelegate(int j); public HandlerDelegate e1; public event HandlerDelegate e2; public event HandlerDelegate e3 { add { e2 += value; } remove { e2 -= value; } } public event HandlerDelegate e4 { add { lock(this) {e2 += value; } } remove { lock(this) {e2 -= value; } } } e1 += new HandlerDelegate(f1); e2 += new HandlerDelegate(f1); e3 += new HandlerDelegate(f1); e4 += new HandlerDelegate(f1); The addition of the keyword "event" restricts usage to the += and -= operators, this is understood. The language specificaion indicates that e2 and e4 should produce equivilant code. This does not appear to be borne out by investigation of the disassembly!!!! Can anyone give a DEFINITIVE answer on the thread saftety of the four implementations as well as any other effects of using the keyword event {i.e. a comparision of e1 vs e2). I need an answer that can be confirmed. Thanks in advance! David V. Corbin Chief Software Architect Dynamic Concepts Development Corp. Sayville, NY