So sometimes you will get these strange errors or exceptions when using Linq Sequence contains no matching element
For example if you use
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var result = myEnumerableCollection.First(x => x.Name == person.Name); |
This will throw InvalidOperationException with Sequence contains no matching element.
But if you use
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var result = myEnumerableCollection.FirstOrDefault(x => x.Name == person.Name); if(result == null) //did not find in the collection something went wrong or ..... |
Which will return you a null if its not found then you can check if the result is null and continue on with your work 🙂
Hope this helps 🙂
thanks this helped!
Thanks very much, I started using it.
Thank you! Exactly what i want! 😡
Didn’t work for me. I think my error was caused because my ICollection had no items.
Turns Out First throws an exception if a list element can’t be found. MS Suggests using SingleOrDefault instead which will return null if no matching element is found.
Thanks for this help