C# | Check if an array is read-only or not

// C# program to illustrate
// IsReadOnly Property of
// Array class
using System;
namespace geeksforgeeks {

class GFG {

    // Main Method
    public static void Main()
    {

        // declares an 1D Array of string
        string[] topic;

        // assigning null to array
        topic = new string[] { null };

        // Here we check whether is
        // array of fixed size or not
        Console.WriteLine("Result: " + topic.IsReadOnly);
    }
}
}

// C# program to illustrate
// IsReadOnly Property of
// Array class
using System;
namespace geeksforgeeks {

class GFG {

    // Main Method
    public static void Main()
    {

        // Two-dimensional array 
        int[, ] arr = new int[, ] {{1, 2}, 
                                   {3, 4},  
                                   {5, 6},  
                                   {7, 8}}; 


        // Here we check whether is
        // array of fixed size or not
        Console.WriteLine("Result: " + arr.IsReadOnly);
    }
}
}