Check if an Array has fixed size or not in C#

To check if an array has fixed size or not, try the below code −

Example

 Live Demo

using System;
public class Demo {
   public static void Main(){
      string[] products = new string[] { "Electronics", "Accessories", "Clothing", "Toys", "Clothing", "Furniture" };
      Console.WriteLine("Products list...");
      foreach(string s in products){
         Console.WriteLine(s);
      }
      Console.WriteLine("Is the products Accessories in the array? = {0}",
         Array.Exists(products, ele => ele == "Accessories"));
      Console.WriteLine("Is the products Stationery in the array? = {0}",
         Array.Exists(products, ele => ele == "Stationery"));
      Console.WriteLine("
One or more products begin with the letter 'C'? = {0}",
         Array.Exists(products, ele => ele.StartsWith("C")));
      Console.WriteLine("One or more planets begin with 'D'? = {0}",
         Array.Exists(products, ele => ele.StartsWith("D")));
      Console.WriteLine("One or more products begin with the letter 'T'? = {0}",
         Array.Exists(products, ele => ele.StartsWith("T")));
      Console.WriteLine("One or more planets begin with 'E'? = {0}",
         Array.Exists(products, ele => ele.StartsWith("E")));
      Console.WriteLine("Is the array having fixed size? = " + products.IsFixedSize);
   }
}

Output

This will produce the following output −

Products list...
Electronics
Accessories
Clothing
Toys
Clothing
Furniture
Is the products Accessories in the array? = True
Is the products Stationery in the array? = False
One or more products begin with the letter 'C'? = True
One or more planets begin with 'D'? = False
One or more products begin with the letter 'T'? = True
One or more planets begin with 'E'? = True
Is the array having fixed size? = True

Example

Let us see another example −

 Live Demo

using System;
public class Demo {
   public static void Main(){
      string[] products = new string[] { };
      Console.WriteLine("One or more planets begin with 'E'? = {0}",
      Array.Exists(products, ele => ele.StartsWith("E")));
      Console.WriteLine("Is the array having fixed size? = " + products.IsFixedSize);
   }
}

Output

This will produce the following output −

One or more planets begin with 'E'? = False
Is the array having fixed size? = True