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ObjectDisposedException Class

The exception that is thrown when an operation is performed on a disposed object.

Namespace:  System
Assembly:  mscorlib (in mscorlib.dll)

'Declaration
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public Class ObjectDisposedException _
	Inherits InvalidOperationException
'Usage
Dim instance As ObjectDisposedException

The following example demonstrates an error that causes the ObjectDisposedException exception to be thrown.

Imports System
Imports System.IO

Public Class ObjectDisposedExceptionTest

   Public Shared Sub Main()
      Dim ms As New MemoryStream(16)
      ms.Close()
      Try
         ms.ReadByte()
      Catch e As ObjectDisposedException
         Console.WriteLine("Caught: {0}", e.Message)
      End Try 
   End Sub 'Main
End Class 'ObjectDisposedExceptionTest

This code produces the following output:

Caught:
  Cannot access a closed Stream.

System.Object
  System.Exception
    System.SystemException
      System.InvalidOperationException
        System.ObjectDisposedException

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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