FIX: Forms.Count and Controls.Count Collections Cause Error

• Microsoft Windows CE Toolkit for Visual Basic 5.0, version 1.0

SYMPTOMS

When accessing the Count property of either the Forms or the Controls collection, the following error is generated:

Error 450: "Wrong number of arguments or invalid property assignment"

RESOLUTION

The following code sample shows how to use the two functions below to get the Forms Count and Controls Count values without producing an error.

1. Create a new Windows CE Project in Visual Basic 5.0. Form1 is created by default.



2. Add a CommandButton to Form1.



3. Add the following code to Form1:

   
         Option Explicit
   
         Private Sub Command1_Click()
             'MsgBox Forms.Count and Controls.Count generate an error,
             'so use the following Functions instead.
             MsgBox "There are/is " & FormsCount & " form(s) loaded"
             MsgBox "Form(0) contains " & ControlsCount & " control(s)"
         End Sub
   
         Private Function FormsCount()
             '===========================================
             'Work around for Forms.Count bug.
             'Returns the number of loaded forms.
             '===========================================
             Dim iFormCount
             Dim sDummy
             On Error Resume Next
             Do
                 sDummy = Forms(iFormCount).Name
                 If Err.Number <> 0 Then
                     FormsCount = iFormCount
                     Exit Do
                 End If
                 iFormCount = iFormCount + 1
             Loop
         End Function
   
         Private Function ControlsCount()
             '===============================================
             'Work around for Controls.Count bug.
             'Returns the number of Controls on the form.
             '===============================================
             Dim iControlsCount
             Dim sDummy
             On Error Resume Next
             Do
                 sDummy = Controls(iControlsCount).Name
                 If Err.Number <> 0 Then
                     ControlsCount = iControlsCount
                     Exit Do
                 End If
                 iControlsCount = iControlsCount + 1
             Loop
         End Function 




4. Press the F5 key to run the project.

STATUS

Microsoft has confirmed this to be a problem in the Microsoft products listed at the beginning of this article.

This problem was corrected in Windows CE Toolkit for Visual Basic 6.0.

MORE INFORMATION

Steps to Reproduce Behavior

1. Create a new Windows CE Project in Visual Basic 5.0. Form1 is created by default.



2. Add a CommandButton to Form1.



3. Add the following code to Form1:

   
         Private Sub Command1_Click()
             'MsgBox Forms.Count and Controls.Count generate
             'an error as shown in the following code:
             MsgBox "There are/is " & Forms.Count & " form(s) loaded"
             MsgBox "Form(0) contains " & Controls.Count & " control(s)"
         End Sub 




4. Press the F5 key to run the project.

© Microsoft Corporation 1999, All Rights Reserved.
Contributions by Mike Dixon, Microsoft Corporation

Additional query words: wince vbce vbce5 vbce6

Keywords          : kbToolkit kbVBp kbVBp500bug kbVBp600fix kbWinCE kbWinCE100 kbGrpVB 
Version           : WINDOWS:1.0
Platform          : WINDOWS 
Issue type        : kbbug 

Last Reviewed: February 25, 1999