CSHARP

c# is in array

using System.Linq; //Then you can use linq Contains() method

string[] printer = {"jupiter", "neptune", "pangea", "mercury", "sonic"};
if(printer.Contains("jupiter"))
{Console.WriteLine("'jupiter' is in the array");}

how to know if an element is in an array c#

string[] names = "John", "Susan", "Sophie";
if (names.Contains("John") //Using Contains you can know if a specific value is on an array
    {
    Console.WriteLine("John is a name");
    }