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How to check if an item exists in a C# list collection?
Set a list −
List < string > list1 = new List < string > () {
"Lawrence",
"Adams",
"Pitt",
"Tom"
};Now use the Contains method to check if an item exits in a list or not.
if (list1.Contains("Adams") == true) {
Console.WriteLine("Item exists!");
}The following is the code to check if an item exists in a C# list or not.
Example
using System;
using System.Collections.Generic;
public class Program {
public static void Main() {
List < string > list1 = new List < string > () {
"Lawrence",
"Adams",
"Pitt",
"Tom"
};
Console.Write("List...
");
foreach(string list in list1) {
Console.WriteLine(list);
}
Console.Write("Finding an item in the list...
");
if (list1.Contains("Adams") == true) {
Console.WriteLine("Item exists!");
} else {
Console.WriteLine("Item does not exist!");
}
}
}
Updated on: 22-Jun-2020
12K+ Views
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