Prevent A User From Opening Another Workbook

Feb 12, 2009

How can I prevent a user from opening another workbook in an Excel session "from the outside"?

I'm fairly new to VB. I'm developing (in VB 2003) a simple but SECURE Excel environment which will allow a user to update a hidden Master_Records workbook. I need to keep the user's Excel session secure...for example, I've disabled all Excel Toolbars and Command Buttons, effectively preventing the user from doing anything except filling in some cell values and clicking on a few custom buttons in the worksheet. But how can I prevent the user from opening another workbook into the active session from his desktop and introducing some malicious code into the session via that route?

One respondent in another forum (the only one, in fact) suggested that I look into "instantiating workbook level events" so that I can detect when other workbooks are open. I'm not sure what that means, is there someone here who could give me some guidance into that solution?

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I am trying to have an operation run when opening the Workbook. The UserForm opens fine, but I get an error when the GoButton_Click sub runs. The error file is not very comprehensive.

The user is promoted to 'Delete' or 'Cancel' before the sheet is deleted. I do want to select 'Delete' for the user, but I'm not sure how to do this.

The error mentioned occurs after the user selects 'Delete'. The error is:

Run-time error '-2147417848 (80010108)':
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VB:

Option Explicit
Private Sub UserForm_Initialize()
Me.Choices.List = Array("Choice 1", "Choice 2")
End Sub
Private Sub GoButton_Click()
If Templates = "Choice 1" Then

[Code]....

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Code:
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[code].....

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[url]

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I have a simple spreadsheet which requires a date (mm/dd/yy) in Column A. Columns B-F use formulas to break this date down into the month, quarter, year, etc. Users frequently need to add new rows at the top of the sheet just below the column headers.

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Code:
Private Sub Worksheet_Change(ByVal Target As Range)
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[Code].....

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The formule in Row I is
Code:
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Code:
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Do While fn ""
On Error GoTo Handler:
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Private Sub SortTest_Click()
Dim s As String
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[Code].....

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[Code].....

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