.NET Framework Standard Library Annotated Reference, Volume 1: Base Class Library and Extended Numerics Library

Example

using System;
using System.IO;

namespace Samples
{
  public class NotSupprotedExceptionSample
  {
    public static void Main()
    {
      Byte[] bytes = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9};
      MemoryStream ms = new MemoryStream(
                              bytes,0, bytes.Length,
                              false, false);
      try
      {
        ms.WriteByte((Byte)0);
      }
      catch(NotSupportedException e)
      {
        Console.WriteLine("Exception: {0}", e);
      }
      finally
      {
        ms.Close();
      }
    }
  }
}

The output is

Exception: System.NotSupportedException: Stream does not support writing.
   at System.IO.__Error.WriteNotSupported()
   at System.IO.MemoryStream.WriteByte(Byte value)
   at Samples.NotSupprotedExceptionSample.Main() in C:\Books\BCL\Samples\System\
NotSupportedException\NotSupportedException.cs:line 16