Finding the index of first element in the array in C#

To find the index of first element in the array, the code is as follows −

Example

 Live Demo

using System; public class Demo {    public static void Main() {       string[] products = new string[] { "Andy", "Mark", "Gary", "Andre"};       Console.WriteLine("One or more name begin with 'A'? = {0}",       Array.Exists(products, ele => ele.StartsWith("A")));       Console.WriteLine("Is the array having fixed size? = " + products.IsFixedSize);       Console.WriteLine("Is the array read only? = " + products.IsReadOnly);       Console.WriteLine("Is the array synchronized? = " + products.IsSynchronized);       Console.WriteLine("Index of the 1st element = "+products.GetLowerBound(0));    } }

Output

This will produce the following output −

One or more name begin with 'A'? = True Is the array having fixed size? = True Is the array read only? = False Is the array synchronized? = False Index of the 1st element = 0

Example

Let us see another example −

 Live Demo

using System; public class Demo {    public static void Main() {       string[] products = new string[] { };       Console.WriteLine("Is the array having fixed size? = " + products.IsFixedSize);       Console.WriteLine("Is the array read only? = " + products.IsReadOnly);       Console.WriteLine("Is the array synchronized? = " + products.IsSynchronized);       Console.WriteLine("Index of the 1st element = "+products.GetLowerBound(0));    } }

Output

This will produce the following output −

Is the array having fixed size? = True Is the array read only? = False Is the array synchronized? = False Index of the 1st element = 0