Microsoft KB Archive/935978

= FIX: The call to the Web service fails when an unmanaged MFC program calls a managed Web service that contains a structure that has a null array =

Article ID: 935978

Article Last Modified on 5/17/2007

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APPLIES TO


 * Microsoft Visual Studio 2005 Standard Edition
 * Microsoft Visual Studio 2005 Express Edition
 * Microsoft Visual Studio 2005 Professional Edition

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SYMPTOMS
When an unmanaged Microsoft Foundation Class (MFC) program calls a managed Web service, the call to the Web service fails. Additionally, the Web service returns the E_FAIL error flag.

This problem occurs if the following conditions are true:
 * The Web service contains a structure that has an array as a parameter.
 * The array in the structure is null.



Hotfix information
A supported hotfix is now available from Microsoft. However, it is intended to correct only the problem that is described in this article. Apply it only to systems that are experiencing this specific problem. This hotfix may receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next Visual Studio 2005 service pack that contains this hotfix.

To resolve this problem immediately, contact Microsoft Customer Support Services to obtain the hotfix. For a complete list of Microsoft Customer Support Services telephone numbers and information about support costs, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Note In special cases, charges that are ordinarily incurred for support calls may be canceled if a Microsoft Support Professional determines that a specific update will resolve your problem. The usual support costs will apply to additional support questions and issues that do not qualify for the specific update in question.

Prerequisites
You must have Visual Studio 2005 Service Pack 1 (SP1) installed to apply this hotfix.

Restart requirement
You do not have to restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
The CSoapSocketClientT class and the CSoapWininetClient class are used to call the Web service method. Typically, these classes are used with the SPROXY-generated classes that construct the SOAP messages. The ATL Server class is automatically generated by using the Sproxy.exe tool.

For more information about ATL Server, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn2.microsoft.com/en-us/library/exb5b09w(VS.80).aspx

For more information about software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

Keywords: kbwebservices kbvs2005postsp1fix kbfix kbbug kbhotfixserver kbqfe kbpubtypekc KB935978

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