C# Array AsReadOnly

Description

Array AsReadOnlyreturns a read-only wrapper for the specified array.

Syntax

Array.AsReadOnly<T> has the following syntax.

public static ReadOnlyCollection<T> AsReadOnly<T>(
  T[] array
)

Parameters

Array.AsReadOnly<T> has the following parameters.

• T - The type of the elements of the array.
• array - The one-dimensional, zero-based array to wrap in a read-only ReadOnlyCollection<t> wrapper.

Returns

Array.AsReadOnly<T> method returns <

Example

The following example wraps an array in a read-only ReadOnlyCollection<T>.

/* w w w  .j a v  a 2 s. c om*/
using System;
using System.Collections.Generic;

public class MainClass {

   public static void Main()  {
      String[] myArr = { "The", "quick", "brown", "fox" };

      IList<String> myList = Array.AsReadOnly( myArr );

      try  {
         myList[3] = "CAT";
      }
      catch ( NotSupportedException e )  {
         Console.WriteLine( "{0} - {1}", e.GetType(), e.Message );
         Console.WriteLine();
      }
   }
}

The code above generates the following result.