Visual Studio with C# :

list.Count
"The property Count cannot be used because the get accessor is inaccessible"

list.Count()
"You can use the Count property"

why

Is it a List or an IEnumerable? For lazy loading reasons you need to use Count() for IEnumerables, on a List you can just access Count.

@Buggz it was an array if I’m not wrong

Arrays don't have Count, use Length on those.

@Buggz I can assure you I used Count and it worked.

But that’s also an array.

I don’t understand too, must be a framework thing

I guess it's an extension method on LINQ if you have it in your usings?

@Buggz if I do have it, I didn’t know lol

Wait, properties can't be made into extension methods. I don't have my laptop in front of me, so I can't check on it myself currently. Or in the near future, I don't have one right now and I ordered a new one which won't arrive until late June.

Yes, count() is an extension for IEnumerable, it's not a property, it is a function defined like this:
int Count(this IEnumerable<T> Arg) {...}.
You should use Length for arrays and the Count property for Lists, for other types, trust the intellisense

This discussion is so confusing. Why isn't there a sole way of knowing amount of elements? :(

@psukys Different collection types from different libraries.