DOCUMENT:Q246596 13-MAY-2002 [iis] TITLE :Cannot Use VBScript Classes with Application or Session Scope PRODUCT :Internet Information Server PROD/VER:winnt:5.0 OPER/SYS: KEYWORDS:kbOSWin2000 ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Internet Information Services version 5.0 ------------------------------------------------------------------------------- SYMPTOMS ======== The VBScript 5.0 engine allows the creation of user defined classes, similar to the Visual Basic classes. When you attempt to assign a class as an Application variable, the following error message occurs: Error Type: Application object, ASP 0197 (0x80004005) Disallowed object use Cannot add object with apartment model behavior to the application intrinsic object. //, line In addition, when you assign a class to a Session variable, the following error message occurs when you attempt to use the class: Error Type: Microsoft VBScript runtime (0x800A01B6) Object doesn't support this property or method: //, line CAUSE ===== This behavior is by design. There are specific threading issues that prevent this functionality from being exposed at the Application or Session level. RESOLUTION ========== Only use VBScript classes with page-level scope. WORKAROUND ========== To work around this issue, use Include files to store VBScript classes. To do this perform the following steps: 1. Save the following ASP code as Convert.inc in a folder with at least Script access: <% Class Convert Function Celsius(F) Celsius = ((F-32)*5)/9 End Function Function Fahrenheit(C) Fahrenheit = ((C*9)/5)+32 End Function End Class %> 2. Save the following ASP code as Convert.asp in the same folder as the above file: <% @LANGUAGE="VBSCRIPT" %> <% Set MyConvert = New Convert %>

32F = <%=MyConvert.Celsius(32)%>C

32C = <%=MyConvert.Fahrenheit(32)%>F

3. When you browse the Convert.asp page, the following should be returned: 32F = 0C 32C = 89.6F Note: The above example does not preserve class state between pages. In other words, if any variables are created in the class, they will be destroyed when the page goes out of scope. MORE INFORMATION ================ For more information on Microsoft Scripting Technologies, please see the Microsoft Developer Network (MSDN) Web site at the following URL: http://msdn.microsoft.com/scripting/ Note: Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs. If you have limited programming experience, you may want to contact a Microsoft Certified Partner or the Microsoft fee-based consulting line at (800) 936-5200. For more information about Microsoft Certified Partners, please visit the following Microsoft Web site: http://www.microsoft.com/partner/referral/ For more information about the support options that are available and about how to contact Microsoft, visit the following Microsoft Web site: http://support.microsoft.com/default.aspx?scid=fh;EN-US;CNTACTMS Additional query words: ====================================================================== Keywords : kbOSWin2000 Technology : kbiisSearch kbiis500 Version : winnt:5.0 Issue type : kbprb Solution Type : kbpending ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2002.