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3 paź 2014 · You can use the ElementAt extension method on the list. For example: // Get the first item from the list using System.Linq; var myList = new List<string> { "Yes", "No", "Maybe"}; var firstItem = myList.ElementAt (0); // Do something with firstItem. edited May 20, 2018 at 1:23.
If you know the location or index address of the element you want to get data then you pass that integer value to the indexer and it will return the data almost instantaneously. See below for several use cases of how we can quickly get the first, last, and value in between with the indexer. Get Item In List By Indexer Code Example
19 cze 2013 · I think a nice and efficient solution would be to use yield in combination with an extension method: foreach (var index in indices) {. yield return src[index]; Now you can do: myList.SelectByIndex(new [] { 0, 1, 4 }); You could also use a params object: foreach (var index in indices) {. yield return src[index];
Determines the index of a specific item in the IList. public: int IndexOf (System::Object ^ value); public int IndexOf (object value); public int IndexOf (object? value); abstract member IndexOf : obj -> int. Public Function IndexOf (value As Object) As Integer. Parameters. value. Object. The object to locate in the IList. Returns. Int32.
30 wrz 2023 · Learn the 2 ways to get a list item by index in C#: using an indexer or a Linq ElementAt() call.
5 gru 2021 · This post will discuss how to find the index of an element in a list in C#... The recommended solution is to use `List.IndexOf()` method, which returns the index of the first occurrence of the specified element in this list.
Searches for the specified object and returns the zero-based index of the first occurrence within the range of elements in the List<T> that extends from the specified index to the last element. public: int IndexOf (T item, int index); public int IndexOf (T item, int index);
