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Q151081: BUG: Incorrect Error Message When Setting Read-Only Count Prop

Article: Q151081
Product(s): Microsoft Visual Basic for Windows
Version(s): 
Operating System(s): 
Keyword(s): kbGrpDSVB
Last Modified: 11-JAN-2001

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The information in this article applies to:

- Microsoft Visual Basic Learning Edition for Windows, versions 5.0, 6.0 
- Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0 
- Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0 
- Microsoft Visual Basic Standard Edition, 32-bit, for Windows, version 4.0 
- Microsoft Visual Basic Professional Edition, 16-bit, for Windows, version 4.0 
- Microsoft Visual Basic Professional Edition, 32-bit, for Windows, version 4.0 
- Microsoft Visual Basic Enterprise Edition, 16-bit, for Windows, version 4.0 
- Microsoft Visual Basic Enterprise Edition, 32-bit, for Windows, version 4.0 
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SYMPTOMS
========

When trying to set the Count property of the Forms collection, the following
error message is displayed:

  Error 380 - Invalid Property Value

This error message is incorrect. Visual Basic should display an error message
indicating that the property is read-only at run time.

RESOLUTION
==========

Do not try to set the Count property of the Forms collection. This property is
read-only because it describes the number of open forms of the project. The
Count property can only be set indirectly by loading and unloading forms.

STATUS
======

Microsoft has confirmed this to be an issue in the Microsoft products listed at
the beginning of this article. Microsoft is researching this issue and will post
new information here in the Microsoft Knowledge Base as it becomes available.

MORE INFORMATION
================

Steps to Reproduce Problem
--------------------------

1. Start a new project in Visual Basic. Form1 is created by default.

2. In the Load event for Form1, place the following code:

     Private Sub Form_Load()
           Dim x As Object
           Set x = Forms
           x.Count = 1
     End Sub

3. Run the project by pressing the F5 key. The following error results:

  Error 380 - Invalid Property Value

Additional query words: kbVBp400bug kbVBp500bug kbVBp600bug kbVBp kbdsd kbDSupport kbvba

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Keywords          : kbGrpDSVB 
Technology        : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVBA500 kbVBA600 kbVB500 kbVB600 kbVB400Search kbVB400 kbVB16bitSearch
Issue type        : kbbug

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