And that should teach you two things:
1. All those online (offline too) code converters are brainless and can't know from the code itself that a function call is function call or handler call (there is no syntax difference in C#)
2. Never go for VB...
What you have to do is to understand the error and fix the syntax errors for yourself (an automatic conversion can take you that far only)...
RaiseEvent for VB[
^]