How is this possible?

[MrNorth]

Hi!

Please check this screenshot:



For some reason the guarding if statement is ignored and I had to add a second if to check if curve was nothing, otherwhise it would crash here, when PlotModel.Curve was not initialized. Why is the if not PlotModel is nothing then statement ignored/evaluated incorrectly?

is it me who is doing something wrong, or is the compiler acting up on me? I have seen this on occation before.


/H

[dbasnett]

Would you please use code tags and post the code here.

What is PlotModel? Do you have more than one thread running?

A personal preference of mine is that when checking an object for not noting is to use IsNot.

        If Obj IsNot Nothing Then

        End If

[Sitten Spynne]

The "default" for reference types is Nothing. So FirstOrDefault() returns either the first object that matches its predicate or Nothing. You usually follow it with a check against Nothing, because if you know for sure there is a result you use First() instead.

(There's also an overload that lets you specify a non-null default, but I can't tell if you called it because I can't scroll a screenshot.)