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Hi!
Please check this screenshot:
http://forumbilder.se/ECGH0/wierd.png?width=150
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
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.
Code:If Obj IsNot Nothing Then
End If
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.)