WebJun 3, 2024 · C# List class provides methods and properties to create a list of objects (classes). The Contains method checks if the specified item is already exists in the List. List is a generic class. You must import the following namespace before using the List class. using System.Collections.Generic; WeblstNames.GroupBy (n => n).Any (c => c.Count () > 1); GroupBy method; Groups the elements of a sequence according to a specified key selector function and projects the elements for each group by using a specified function. Any method, it returns boolean; Determines whether any element of a sequence exists or satisfies a condition. Share
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WebOct 21, 2024 · To search backwards, use the FindLast method. FindLast will scan the List from the last element to the first. Here we use FindLast instead of Find. using System; … WebApr 2, 2024 · Find an Item in a C# List The BinarySearch method of List searches a sorted list and returns the zero-based index of the found item. The List must be sorted before this method can be used. The following code snippet returns an index of a string in a List. int bs = authors.BinarySearch("Mahesh Chand"); screen repair asheville nc
c# - Find an item in a generic list by specifying multiple conditions ...
WebAbout. I am a Full Stack Developer with 9+ years of solid experience in designing and development of enterprise applications. I have a good reputation of working on any project with no language barrier. I find it easy and interesting to work on different projects with a variety of tech stacks. It is actually one of those things that drive me ... WebMar 7, 2024 · The collection you created uses the List type. This type stores sequences of elements. You specify the type of the elements between the angle brackets. One important aspect of this List type is that it can grow or shrink, enabling you to add or remove elements. Add this code at the end of your program: WebJun 11, 2024 · If we need to find an element from the list, then we can use the Find and FindAll extensions method, but there is a slight difference between them. Here is an example. Here is an example. List items = new List() { 10, 9, 8, 4, 8, 7, 8 }; // It will return only one 8 as Find returns only the first occurrence of matched elements. screen repair annapolis md