I have a list of objects as ICollection<objectA> listA
. Now I'm trying to loop thru this listA and trying to match a condition and assign the result found into a variable. I tried below:
varB.someDesc = listA.FirstOrDefault(x=>x.ID == varB.ID).someDesc
Error complaining that x.ID
is object null reference. When I put a break point, I can see there are many items in listA and there is an attribute ID
. May I know what goes wrong?