In the following program, we have a list of integers. We shall check if element 68 is present in the list or not using Contains() method. As 68is present in the list, List.Contains() method returns True. Then we shall check if the element 59is present in the list. As 59 is not present in the list, List.Contains() method … See more In this example, we shall check if a given object is present in the list. When working with objects, List.Contains() method considers that two … See more In this C# Tutorial, we learned how to check if an element or object is present in the list or not using List.Contains() method. See more WebJan 4, 2024 · The basic two methods that check the existence of an element or elements in a list are: Contains and Exists. Alternatively, it is also possible to use Count , IndexOf, …

List .Find(Predicate ) Method …

WebThere are several ways that you could do that. Use a for loop instead; Set a Boolean flag; Use Linq to get the list.First() and then foreach over list.Skip(1); I like the Linq way, but without the Skip(1), this way you can also use it for the last item in a list and your code remains clean imho :) map northing and easting

how to check if object already exists in a list - Unity Answers

WebJul 15, 2010 · Count () must actually enumerate all elements of the sequence - which may be expensive if the sequence is based on multiple LINQ operations (or comes from a database). You should use the Any () extension method instead - which only attempts to see if there is at least one element in the list, but will not enumerate the entire sequence. WebWhen searching a list containing value types, make sure the default value for the type does not satisfy the search predicate. Otherwise, there is no way to distinguish between a … WebYou can use the LINQ method Any () to check if a list of strings contains any string in another list in C#. Here's an example: In this example, we have two lists of strings list1 … map northings and eastings