VBA: Global Variables Unloading After Userform Close

AFPathfinder

Well-known Member
Joined
Apr 8, 2012
Messages
533
Office Version
  1. 365
  2. 2016
Platform
  1. Windows
Good day, Excel Guru's!

Right to the point: After closing a userform and opening a userform from the same project (addin file) referencing global object variables, I get the RTE 91 "Object variable or With block variable not set".

I normally don't use global variables, but this project is very large, code-wise, and uses the same worksheet objects over and over. I have to reference the workbook and sheet in each reference to the tables on the addin sheets, so I decided to load the object variables on Workbook_Open event (public declarations are in a separate module):
Code:
Option Explicit

'Public variables for the workbook sheet objects within the addin.
Public shtConfig As Worksheet           'Config
Public shtTemplate114 As Worksheet      'DD 114
Public shtSort As Worksheet             'Tbl_Trans_SortList
Public shtField As Worksheet            'Tbl_Field_Data
Public shtRank As Worksheet             'Tbl_Ranks
Public shtADSN As Worksheet             'Tbl_ADSN
Public shtCountry As Worksheet          'Tbl_Country_Codes
Public shtCurr As Worksheet             'Tbl_Currency_Codes
Public shtLocation As Worksheet         'Tbl_Location_Codes
Public shtState As Worksheet            'Tbl_States
Public shtCert As Worksheet             'Tbl_Certifiers
Public shtNCycle As Worksheet           'Tbl_Current_Cycle
Public shtOCycle As Worksheet           'Tbl_Old_Cycles


Private Sub Workbook_Open()
    'Runs when the workbook is opened.
    
    'Set workbook sheet objects in memory.
    Set shtConfig = ThisWorkbook.Sheets("Config")
    Set shtTemplate114 = ThisWorkbook.Sheets("DD 114")
    Set shtSort = ThisWorkbook.Sheets("Tbl_Trans_SortList")
    Set shtField = ThisWorkbook.Sheets("Tbl_Field_Data")
    Set shtRank = ThisWorkbook.Sheets("Tbl_Ranks")
    Set shtADSN = ThisWorkbook.Sheets("Tbl_ADSN")
    Set shtCountry = ThisWorkbook.Sheets("Tbl_Country_Codes")
    Set shtCurr = ThisWorkbook.Sheets("Tbl_Currency_Codes")
    Set shtLocation = ThisWorkbook.Sheets("Tbl_Location_Codes")
    Set shtState = ThisWorkbook.Sheets("Tbl_States")
    Set shtCert = ThisWorkbook.Sheets("Tbl_Certifiers")
    Set shtNCycle = ThisWorkbook.Sheets("Tbl_Current_Cycle")
    Set shtOCycle = ThisWorkbook.Sheets("Tbl_Old_Cycles")
End Sub

I checked the objects using the immediate window and the intellisense was picking up that the object was a worksheet, but I got the same error with this command:
Code:
? shtConfig.Name

Any thoughts?

For completeness, here is the code behind one of the smaller forms that generates the error. The error occurs on the first usage of a sheet object variable on the Userform_Initialize event.
Code:
Option Explicit

Private Sub btnCertNew_Click()
    'On Save Changes command button click.
    
    Dim intRow As Integer               'Holds the listbox row number of the selected certifier.
    
    'To stop listbox click event from executing code. Not a great solution.
    lblCatch.Caption = "R"
    
    'Identify the next row number.  ListCount is offset by one from the ListIndex.
    intRow = shtCert.Cells(Rows.Count, 1).End(xlUp).Row + 1
    
    'Fill the new row with the data from the input fields.
    shtCert.Range("A" & intRow).Value = cboRank.Value & " " & txtFName.Value & " " & txtLName.Value
    shtCert.Range("B" & intRow).Value = txtFName.Value
    shtCert.Range("C" & intRow).Value = txtMInit.Value
    shtCert.Range("D" & intRow).Value = txtLName.Value
    shtCert.Range("E" & intRow).Value = txtSuffx.Value
    shtCert.Range("F" & intRow).Value = cboRank.Value
    shtCert.Range("G" & intRow).Value = txtSigPreview.Value
    
    'Clear the input fields.
    txtFName.Value = ""
    txtMInit.Value = ""
    txtLName.Value = ""
    txtSuffx.Value = ""
    cboRank.ListIndex = 0
    txtSigPreview.Value = ""
    btnSaveChanges.Enabled = False
    btnCertNew.Enabled = False
    
    'Reset the rowsource for the listbox.
    lstCertifiers.RowSource = "'[" & ThisWorkbook.Name & "]Tbl_Certifiers'!" & Range("A3:G" & intRow).Address
    lstCertifiers.ListIndex = -1
    
    'To resume listbox click event effect.
    lblCatch.Caption = ""
End Sub
Private Sub btnDelete_Click()
    'On Delete Selected button press.
    
    Dim intRow As Integer               'Holds the listbox row number of the selected certifier.
    
    'Variable the row integer of the selected item.
    intRow = lstCertifiers.ListIndex + 3
    
    'If a record is selected in the cycle listbox, remove the record.
    shtCert.Range("A" & intRow).EntireRow.Delete
    
    'Reset the rowsource for the listbox.
    If lstCertifiers.ListCount > 0 Then
        lstCertifiers.RowSource = "'[" & ThisWorkbook.Name & "]Tbl_Certifiers'!" & Range("A3:G" _
            & shtCert.Cells(Rows.Count, 1).End(xlUp).Row).Address
        lstCertifiers.ListIndex = -1
    End If
    
    'Clear the input fields.
    txtFName.Value = ""
    txtMInit.Value = ""
    txtLName.Value = ""
    txtSuffx.Value = ""
    cboRank.ListIndex = 0
    txtSigPreview.Value = ""
    btnSaveChanges.Enabled = False
    btnCertNew.Enabled = False
    lstCertifiers.ListIndex = -1
End Sub
Private Sub btnSaveChanges_Click()
    'On Save Changes command button click.
    
    Dim intRow As Integer               'Holds the listbox row number of the selected certifier.
    
    'To stop listbox click event from executing code. Not a great solution.
    lblCatch.Caption = "R"
    
    'Variable the row integer of the selected item.
    intRow = lstCertifiers.ListIndex + 3
    
    'Change the selected item's values.
    shtCert.Range("A" & intRow).Value = cboRank.Value & " " & txtFName.Value & " " & txtLName.Value
    shtCert.Range("B" & intRow).Value = txtFName.Value
    shtCert.Range("C" & intRow).Value = txtMInit.Value
    shtCert.Range("D" & intRow).Value = txtLName.Value
    shtCert.Range("E" & intRow).Value = txtSuffx.Value
    shtCert.Range("F" & intRow).Value = cboRank.Value
    shtCert.Range("G" & intRow).Value = txtSigPreview.Value
    
    'Clear the input fields.
    txtFName.Value = ""
    txtMInit.Value = ""
    txtLName.Value = ""
    txtSuffx.Value = ""
    cboRank.ListIndex = 0
    txtSigPreview.Value = ""
    btnSaveChanges.Enabled = False
    btnCertNew.Enabled = False
    lstCertifiers.ListIndex = -1
    
    'To resume listbox click event effect.
    lblCatch.Caption = ""
End Sub
Private Sub cboRank_Change()
    'On combobox value change.
    
    'Update the signature preview textbox.
    txtSigPreview = CertifierSig(txtFName.Value, txtMInit.Value, txtLName.Value, txtSuffx.Value, cboRank.Value)
    
    'Enable save and add buttons if first name, last name, and rank have a value.
    If txtFName.Value <> "" And txtLName.Value <> "" And cboRank.Value <> "" Then
        If lstCertifiers.ListIndex > -1 Then
            btnSaveChanges.Enabled = True
        End If
        btnCertNew.Enabled = True
    Else
        btnSaveChanges.Enabled = False
        btnCertNew.Enabled = False
    End If
End Sub
Private Sub lstCertifiers_Click()
    'On listbox click event.

    'If the listbox has a selected value, add the row data to the Certifier Information frame.
    If lstCertifiers.ListIndex > -1 And lblCatch.Caption <> "R" Then
        txtFName = lstCertifiers.List(, 1)
        txtMInit = lstCertifiers.List(, 2)
        txtLName = lstCertifiers.List(, 3)
        txtSuffx = lstCertifiers.List(, 4)
        cboRank = lstCertifiers.List(, 5)
        txtSigPreview = lstCertifiers.List(, 6)
        btnDelete.Enabled = True
    Else
        btnDelete.Enabled = False
    End If
End Sub
Private Sub txtFName_Change()
    'On combobox value change.
    
    'Update the signature preview textbox.
    txtSigPreview = CertifierSig(txtFName.Value, txtMInit.Value, txtLName.Value, txtSuffx.Value, cboRank.Value)
    
    'Enable save and add buttons if first name, last name, and rank have a value.
    If txtFName.Value <> "" And txtLName.Value <> "" And cboRank.Value <> "" Then
        If lstCertifiers.ListIndex >= -1 Then
            btnSaveChanges.Enabled = True
        End If
        btnCertNew.Enabled = True
    Else
        btnSaveChanges.Enabled = False
        btnCertNew.Enabled = False
    End If
End Sub
Private Sub txtLName_Change()
    'On combobox value change.
    
    'Update the signature preview textbox.
    txtSigPreview = CertifierSig(txtFName.Value, txtMInit.Value, txtLName.Value, txtSuffx.Value, cboRank.Value)
    
    'Enable save and add buttons if first name, last name, and rank have a value.
    If txtFName.Value <> "" And txtLName.Value <> "" And cboRank.Value <> "" Then
        If lstCertifiers.ListIndex > -1 Then
            btnSaveChanges.Enabled = True
        End If
        btnCertNew.Enabled = True
    Else
        btnSaveChanges.Enabled = False
        btnCertNew.Enabled = False
    End If
End Sub
Private Sub txtMInit_Change()
    'On combobox value change.
    
    'Update the signature preview textbox.
    txtSigPreview.Value = CertifierSig(txtFName.Value, txtMInit.Value, txtLName.Value, txtSuffx.Value, cboRank.Value)
    
    'Enable save and add buttons if first name, last name, and rank have a value.
    If txtFName.Value <> "" And txtLName.Value <> "" And cboRank.Value <> "" Then
        If lstCertifiers.ListIndex > -1 Then
            btnSaveChanges.Enabled = True
        End If
        btnCertNew.Enabled = True
    Else
        btnSaveChanges.Enabled = False
        btnCertNew.Enabled = False
    End If
End Sub
Private Sub txtSuffx_Change()
    'On combobox value change.
    
    'Update the signature preview textbox.
    txtSigPreview = CertifierSig(txtFName.Value, txtMInit.Value, txtLName.Value, txtSuffx.Value, cboRank.Value)
    
    'Enable save and add buttons if first name, last name, and rank have a value.
    If txtFName.Value <> "" And txtLName.Value <> "" And cboRank.Value <> "" Then
        If lstCertifiers.ListIndex > -1 Then
            btnSaveChanges.Enabled = True
        End If
        btnCertNew.Enabled = True
    Else
        btnSaveChanges.Enabled = False
        btnCertNew.Enabled = False
    End If
End Sub
Private Sub UserForm_Initialize()
    'Executes before userform is shown to the user.

    'Position in the middle of the same screen the button is clicked.
    With Certifiers
        .StartUpPosition = 0
        .Left = Application.Left + (0.5 * Application.Width) - (0.5 * .Width)
        .Top = Application.Top + (0.5 * Application.Height) - (0.5 * .Height)
    End With
    
    'Load rowsource to listbox if there are any certifiers listed.
    If shtCert.Cells(Rows.Count, 1).End(xlUp).Row > 2 Then
        lstCertifiers.RowSource = "'[" & ThisWorkbook.Name & "]Tbl_Certifiers'!" _
            & Range("A3:G" & shtCert.Cells(Rows.Count, 1).End(xlUp).Row).Address
    End If
    
    'Load rowsource to comboboxes.
    cboCertDefault.RowSource = "'[" & ThisWorkbook.Name & "]Tbl_Certifiers'!" _
        & Range("A2:A" & shtCert.Cells(Rows.Count, 1).End(xlUp).Row).Address
    cboRank.RowSource = "'[" & ThisWorkbook.Name & "]Tbl_Ranks'!" _
        & Range("A2:A" & shtRank.Cells(Rows.Count, 1).End(xlUp).Row).Address
        
    'Set default combobox values.
    cboCertDefault.Value = shtConfig.Range("B" & RowFind("Config", "Default Certifier")).Value
End Sub
Private Sub UserForm_QueryClose(Cancel As Integer, CloseMode As Integer)
    'When userform exits.
    
    'Add default certifier combobox value to the config worksheet.
    shtConfig.Range("B" & RowFind("Config", _
        "Default Certifier")).Value = cboCertDefault.Value
    'Exit userform
    Unload Me
End Sub
 

Excel Facts

What does custom number format of ;;; mean?
Three semi-colons will hide the value in the cell. Although most people use white font instead.
If they aren't already, put these at the top of a general module (i.e. - module1) rather than inside the ThisWorkbook code.

Code:
'Public variables for the workbook sheet objects within the addin.
Public shtConfig As Worksheet           'Config
Public shtTemplate114 As Worksheet      'DD 114
Public shtSort As Worksheet             'Tbl_Trans_SortList
Public shtField As Worksheet            'Tbl_Field_Data
Public shtRank As Worksheet             'Tbl_Ranks
Public shtADSN As Worksheet             'Tbl_ADSN
Public shtCountry As Worksheet          'Tbl_Country_Codes
Public shtCurr As Worksheet             'Tbl_Currency_Codes
Public shtLocation As Worksheet         'Tbl_Location_Codes
Public shtState As Worksheet            'Tbl_States
Public shtCert As Worksheet             'Tbl_Certifiers
Public shtNCycle As Worksheet           'Tbl_Current_Cycle
Public shtOCycle As Worksheet           'Tbl_Old_Cycles

Leave the Workbook_Open() stuff where it is though.

Then lemme know how it goes.

Edit: Oops, just read "public declarations are in a separate module" -- my bad
 
Last edited:
Upvote 0
I threw together a test workbook for this and I am not having issues accessing the global variable.

ThisWorkbook Code:

Code:
Private Sub Workbook_Open()
Set testSheet = ThisWorkbook.Sheets("Sheet1")
End Sub

Module1 Code (called by a command button on Sheet1):

Code:
Public testSheet As Worksheet
Sub openForm()
UserForm1.Show
End Sub

UserForm1 Code (has 1 label):

Code:
Public Sub UserForm_Initialize()
Me.Label1.Caption = testSheet.Name
End Sub

I'm not coming up with any great ideas about what is wrong. Short of a spelling error somewhere, maybe it has something to do with how you call the userform/ where you call it from?

Otherwise, I hope someone else can chime in on the issue cause I'm beat.
 
Upvote 0
Actually, the problem seems to be intermittent. Might this be caused when a run is ended in break mode? I had a control reference that was incorrect and I was ending midway through a method.

The Userform_QueryClose event doesn't contain any code that would impact the value of those global variables. The sturdiness of the tool is a big concern of mine as it will be sent to users who don't have local VBA support. Would it be advisable to put the object assignment into a method, which is called at the close event of all userforms (or initialization of all userforms)?
 
Upvote 0
So what I'm noticing in my test workbook:

​Sometimes... If I trigger the _QueryClose Event (clicking the x in the corner or w/e)

I cannot re-initialize the form.

I think the "Unload Me" within the _QueryClose Event is your culprit. - Though I don't understand why it is resetting your globals.
 
Last edited:
Upvote 0
Upvote 1
Hi,
perhaps change how & when you intialize your variables

Place in a STANDARD module

Rich (BB code):
'Public variables for the workbook sheet objects within the addin.
Public shtConfig As Worksheet           'Config
Public shtTemplate114 As Worksheet      'DD 114
Public shtSort As Worksheet             'Tbl_Trans_SortList
Public shtField As Worksheet            'Tbl_Field_Data
Public shtRank As Worksheet             'Tbl_Ranks
Public shtADSN As Worksheet             'Tbl_ADSN
Public shtCountry As Worksheet          'Tbl_Country_Codes
Public shtCurr As Worksheet             'Tbl_Currency_Codes
Public shtLocation As Worksheet         'Tbl_Location_Codes
Public shtState As Worksheet            'Tbl_States
Public shtCert As Worksheet             'Tbl_Certifiers
Public shtNCycle As Worksheet           'Tbl_Current_Cycle
Public shtOCycle As Worksheet           'Tbl_Old_Cycles




Sub IntializeVariables(ByVal State As Integer)


'Set workbook sheet objects in memory (xlOn) or release from memory (xlOff).
  With ThisWorkbook
    Set shtConfig = IIf(State = xlOn, .Sheets("Config"), Nothing)
    Set shtTemplate114 = IIf(State = xlOn, .Sheets("DD 114"), Nothing)
    Set shtSort = IIf(State = xlOn, .Sheets("Tbl_Trans_SortList"), Nothing)
    Set shtField = IIf(State = xlOn, .Sheets("Tbl_Field_Data"), Nothing)
    Set shtRank = IIf(State = xlOn, .Sheets("Tbl_Ranks"), Nothing)
    Set shtADSN = IIf(State = xlOn, .Sheets("Tbl_ADSN"), Nothing)
    Set shtCountry = IIf(State = xlOn, .Sheets("Tbl_Country_Codes"), Nothing)
    Set shtCurr = IIf(State = xlOn, .Sheets("Tbl_Currency_Codes"), Nothing)
    Set shtLocation = IIf(State = xlOn, .Sheets("Tbl_Location_Codes"), Nothing)
    Set shtState = IIf(State = xlOn, .Sheets("Tbl_States"), Nothing)
    Set shtCert = IIf(State = xlOn, .Sheets("Tbl_Certifiers"), Nothing)
    Set shtNCycle = IIf(State = xlOn, .Sheets("Tbl_Current_Cycle"), Nothing)
    Set shtOCycle = IIf(State = xlOn, .Sheets("Tbl_Old_Cycles"), Nothing)
  End With


End Sub


In your UserForms

Rich (BB code):
Private Sub UserForm_Initialize()
 'Executes before userform is shown to the user.
    IntializeVariables xlOn
    'Position in the middle of the same screen the button is clicked.
    With Certifiers
        .StartUpPosition = 0
        .Left = Application.Left + (0.5 * Application.Width) - (0.5 * .Width)
        .Top = Application.Top + (0.5 * Application.Height) - (0.5 * .Height)
    End With

    'Load rowsource to listbox if there are any certifiers listed.
    If shtCert.Cells(Rows.Count, 1).End(xlUp).Row > 2 Then
        lstCertifiers.RowSource = "'[" & ThisWorkbook.Name & "]Tbl_Certifiers'!" _
            & Range("A3:G" & shtCert.Cells(Rows.Count, 1).End(xlUp).Row).Address
    End If

    'Load rowsource to comboboxes.
    cboCertDefault.RowSource = "'[" & ThisWorkbook.Name & "]Tbl_Certifiers'!" _
        & Range("A2:A" & shtCert.Cells(Rows.Count, 1).End(xlUp).Row).Address
    cboRank.RowSource = "'[" & ThisWorkbook.Name & "]Tbl_Ranks'!" _
        & Range("A2:A" & shtRank.Cells(Rows.Count, 1).End(xlUp).Row).Address

    'Set default combobox values.
    cboCertDefault.Value = shtConfig.Range("B" & RowFind("Config", "Default Certifier")).Value
End Sub
Private Sub UserForm_QueryClose(Cancel As Integer, CloseMode As Integer)
    'When userform exits.

    'Add default certifier combobox value to the config worksheet.
    shtConfig.Range("B" & RowFind("Config", _
        "Default Certifier")).Value = cboCertDefault.Value


 'Exit userform
    IntializeVariables xlOff
End Sub

Suggestion should ensure variables are intialized when form opened & released from memory when closed.

you should not need Unload Me in the QueryClose event

Dave
 
Last edited:
Upvote 1
Solution
If you end code from break mode, you have a state loss and all your public variables will be reset.
 
Upvote 1
Thank you hotabae, dmt32, and RoryA! That all makes sense and I believe I'll try dmt32's suggestion. That should help alleviate a future state loss with those variables. Again, thank you all!

Also, thanks for the tip on "Unload Me", dmt32.
 
Upvote 0

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