Null reference exception on empty object initializing

Asked Jan 18 '17 at 08:48

Active Jan 18 '17 at 08:50

Viewed 49 times

I have following code. On executing in throws NRE on initializing model.

var model = new EmployeeModel { };

if (responseUsers.Any(x => x.EmployeeId == model.EmployeeId))
{
    logger.Warn("Issue with employee");
}

BUT when I remove or comment that LINQ expression with Any, everything works fine. It looks like completely magic for me and I have no idea why does it work so. Don't know how expression coming after object initialization could affect that initialization. Does someone has any ideas?

p.s. Actually, I have some properties in that model object and I populate them on initialization, but is doesn't affect the issue.

edited Jan 18 '17 at 08:50

asked Jan 18 '17 at 08:48

Alexey Koptyaev

2

`responseUsers` is null. – Ant P Jan 18 '17 at 08:50
@AntP nope, it is a List – Alexey Koptyaev Jan 18 '17 at 08:50
4

@AlexeyKoptyaev: well, then at least one of the items in the list is `null` – Tim Schmelter Jan 18 '17 at 08:52
If this is a question about where/how the error is reported, assure us that you did a Clean and a Rebuild etc. Also: Debug/Release/Custom config? – Henk Holterman Jan 18 '17 at 08:54
@TimSchmelter No, there is not any nulls. Even there were any, why the exception is thrown in object initialization instead of LINQ query? – Alexey Koptyaev Jan 18 '17 at 10:07
@AlexeyKoptyaev: because you don't have the current debug symbols, so you see the wrong line. Do what Henk has suggested – Tim Schmelter Jan 18 '17 at 10:09
@TimSchmelter I've tried Clean/Rebuild etc. Nothing happened. I run at Debug config – Alexey Koptyaev Jan 18 '17 at 10:19

Null reference exception on empty object initializing

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