XML write to console excluding null fields

Tried

if (control.attributes.interrupt.value != null)

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I get System.NullReferenceException: 'Object reference not set to an instance of an object.' message.
Even tried

try { Console.WriteLine($"control: {control.instance} - {control.attributes.interrupt.value}"); }//might be missing
                        catch (Exception NullReferenceException) { }

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Same thing. Clearly not handling the exception right. Now I'm lost.

Well, I figure out that my System.NullReferenceException: 'Object reference not set to an instance of an object.' message. Had to exclude the ".value" in the validation.

Now back to my advice question...

Sorry about that. In my code I know if a parameter in XML wanting to expose does not exist I can test first to see if it is there, like this:

 if (control.attributes.interrupt != null)
Console.Write($"\t{control.attributes.interrupt.value}");
else
Console.Write("\t");

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Repeating this for each parameter. I was wondering/looking for a better/elegant way of doing this, as there are 40 or so values I want to write to the console.
Sometimes as I iterate through all the "controls" in the XML some have the values others don't.