How do I compare two PropertyInfos or methods reliably?
- by Rob Ashton
Same for methods too:
I am given two instances of PropertyInfo or methods which have been extracted from the class they sit on via GetProperty or GetMember etc, (or from a MemberExpression maybe).
I want to determine if they are in fact referring to the same Property or the same Method so
(propertyOne == propertyTwo)
or
(methodOne == methodTwo)
Clearly that isn't going to actually work, you might be looking at the same property, but it might have been extracted from different levels of the class hierarchy (in which case generally, propertyOne != propertyTwo)
Of course, I could look at DeclaringType, and re-request the property, but this starts getting a bit confusing when you start thinking about
Properties/Methods declared on interfaces and implemented on classes
Properties/Methods declared on a base class (virtually) and overridden on derived classes
Properties/Methods declared on a base class, overridden with 'new' (in IL world this is nothing special iirc)
At the end of the day, I just want to be able to do an intelligent equality check between two properties or two methods, I'm 80% sure that the above bullet points don't cover all of the edge cases, and while I could just sit down, write a bunch of tests and start playing about, I'm well aware that my low level knowledge of how these concepts are actually implemented is not excellent, and I'm hoping this is an already answered topic and I just suck at searching.
The best answer would give me a couple of methods that achieve the above, explaining what edge cases have been taken care of and why :-)
