The as operator must be used with a reference type or nullablepe or nullable type ('long' is a non-n

Code (CSharp):

1. public void InformNetwork(Vetr eventName, params object[] adder) {
2.     switch (eventName)
3.     {
4.         case Vetr.CLOSED:
5.             long connId = adder[0] as long ?? throw new Exception("Empty or invalid connId (Connection ID)");

I'm looking for a single liner to grab a variable, cast it to a type (in this case

long

) and throw if it's either null or cast/assignment is not successful. I thought that was a way to do it but for some reason it fails. It won't even compile with following errors in the console:

error CS0077: The as operator must be used with a reference type or nullable type ('long' is a non-nullable value type)

 

Welp, I'm an idiot, forgot

?

after

long

. So now it's:

long connId = adder[0] as long? ?? throw

and works.