how to search value in Array

using System;

class Program
{
static void Main()
{
//
// Example integer array is declared.
//
int[] array = new int[6];
array[0] = 1;
array[1] = 3;
array[2] = 5;
array[3] = 7;
array[4] = 8;
array[5] = 5;

//
// Find index of element with value 5.
//
int index1 = Array.IndexOf(array, 5);

//
// Find index of value 3.
//
int index2 = Array.IndexOf(array, 3);

//
// Find last index of 5.
//
int index3 = Array.LastIndexOf(array, 5);

//
// Write the results.
//
Console.WriteLine(index1);
Console.WriteLine(index2);
Console.WriteLine(index3);
}
}

=== Output of the program ===

2
1
5

---

if (Array.IndexOf("StringArray", "ValueToFind") != -1)
{
//If found
//your code goes here
}
else
// Not found