Here is a simple CodeRush Template for generating guard clauses.
Type inx space within a method, whilst you have a variable reference on the clipboard and you'll get...
If [VariableName] Is nothing Then
return
End If
or
if ([VariableName] == null)
{
return;
}
... depending on the language you're currently operating in.
This Template is often referred to within DevExpress Webinars as If Not Null or If Null Exit
