Object Reference not set to an instance of object error

Question

Can somebody help me figure out what is wrong with the code below?

Messages = (
        from k in j.Descendants(xmlns + BLConst.MessageElement)
        select new KWI.Common.CLUE.BusinessEntities.Message()
        {
            type = (k.Attribute(BLConst.TypeElement) != null) ? (k.Attribute(BLConst.TypeElement).Value).ToString() : string.Empty,
            MessageText = (k.Element( xmlns + BLConst.MessageElement).Value).ToString()
        }
    ).ToList()

I get an error at select new kwi....Message(){ .. }

Thanks

It would have been better if you have pasted the code, then the image. — FIre Panda, May 06 '11 at 16:24
Please post the actual code (not a screenshot) and the error message in full. That will be much more helpful. Thanks. — IAmTimCorey, May 06 '11 at 16:26
See http://stackoverflow.com/questions/4660142/what-is-a-nullreferenceexception-in-net — John Saunders, May 06 '11 at 16:32

score 2 · Answer 1 · answered May 06 '11 at 16:26

2

Either k.Attribute(...).Value is null or k.Element(...) is null or k.Element(...).Value is null.

answered May 06 '11 at 16:26

Daniel Hilgarth

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score 2 · Accepted Answer · answered May 06 '11 at 16:27

2

Your MessageText selection is off - k is already a message element, yet you are trying to select a child message element from it which doesn't exist - just take the value:

MessageText = k.Value;

answered May 06 '11 at 16:27

BrokenGlass

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Object Reference not set to an instance of object error

2 Answers2