Answers for "c# add value to list if not exists"

c# verify in class exist in list

Item wonderIfItsPresent = ...
bool containsItem = myList.Any(item => item.UniqueProperty == wonderIfItsPresent.UniqueProperty);'

Posted by: Guest on May-19-2020

how to add to a list only items that are not already in the list c#

CurrentCollection.AddRange(NewItems.Where(x => !CurrentCollection.Any(y => y.valueToCheck == x.valueToCheck)));

Posted by: Guest on October-19-2020

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