Excel/Hiding rows with blank value
Expert: Tom Ogilvy - 11/8/2009
Question
QUESTION: The spreadsheet containing a list box which enable user to drill down by Region and the results will show by countries. Where North America Region could contain only two country and Latin America Region has 18 countries.
In Cell C5 is a list box
and returning value in range B11:J37 and B44:J69.
For example: C5
Issuing Region: NORTH_AMERICA
B11 B12
USA 500
CANADA 700
My question is how can I write a vb or macro to automatically hide the rows that are blank when the user choose a region they want to see.
I hope you could help me with this question.
Many thanks.
Regards,
Sian
ANSWER: Sian,
Let's assume that column B can be used to determine which rows are blank - i.e. if a cell in column B is blank, then the row needs to be hidden. Assume that values in column B are constants and if a cell appears blank, it is, in fact, empty. Then you can use code like this:
Range("B:B").SpecialCells(xlBlanks).EntireRow.Visible = False
or
Range("B2",Cells(rows.count,"B").End(xlup).SpecialCells(xlBlanks).EntireRow.Visible = False
Are the type of macro you can use if you can depend on column B to accurately reflect which rows are blank or not - or use a column that can.
Hope that is what you were asking.
--
Regards,
Tom Ogilvy
---------- FOLLOW-UP ----------
QUESTION: Many thanks for your quick response, Tom. As you can tell, I am totally clueless in VB at all, but my boss is driving me insane!! On one hand wanted me to know everything, on the other hand refuse to send me to taking any classes. I am learning myself through books and online.
I realised that I should have asked how could I hide and unhide when user select from a drop down list. I have attached a png file to show you my worksheet. Hopefully this can further explain what I want to do. Please let me know if this explain well or how could I further show you what my intend is.
Thank you once again.
AnswerI assume your dropdown is done using the List option from data validation.
If so, you can react to a selection by using the worksheet change event. Right click on the sheet tab and select view code.
in the resulting module (the sheet module), in the top of the module are two dropdowns. In the left dropdown, select Worksheet and in right dropdown select Change
that should put in a declaration for the Change event in the module:
=============ERROR HERE===============================
Private Sub Worksheet_SelectionChange(ByVal Target As Range)
End Sub
===============should be============================
Private Sub Worksheet_Change(ByVal Target As Range)
End Sub
======================================================
[ Added NOTE:]
[I warned you against using the selectionchange vice the change event and then accidentally pasted in the declaration for the SelectionChange event. I have changed it in this revision. The code below was and is correct. It has the change event. I noticed the mistake, but when I got around to sending it, I forgot to correct the above. ]
The argument Target in the event will carry a reference to the cell or cells that changed by editing or code (or selection from the dropdown) and caused the event to trigger.
If Target.Address = "$C$5" then
' the cell with the dropdown triggered the event.
' now we need to react to the selection in the cell
The problem is that you haven't identified how you are equating North_America to the countries of the USA and CANADA. I would suggest you add a sheet in your workbook and put in the equivalencies
A1: NORTH_AMERICA
B1: USA
C1: 11
A2: NORTH_AMERICA
B2: CANADA
C2: 12
A3: Another Region Name
B3: First country in that region
C3: Row of that country
Continue listing your data going down columns A:C
assume that is in a sheet named TABLE
now we can use that list to determine which rows to unhide:
Private Sub Worksheet_Change(ByVal Target As Range)
Dim r As Range, cell As Range
If Target.Address = "$C$5" Then
If Len(Trim(Target)) = 0 Then
' if C5 is blank, then show all rows
Me.Range("B11:B37,B44:B69").EntireRow.Hidden = False
Exit Sub
End If
With Worksheets("TABLE")
Set r = .Range(.Cells(1, "A"), .Cells(Rows.Count, "A").End(xlUp))
End With
' hide all rows in your data ranges
Me.Range("B11:B37,B44:B69").EntireRow.Hidden = True
For Each cell In r
If LCase(cell.Value) = LCase(Me.Range("C5").Value) Then
' region matches C7 in this sheet, show row for the
' row number stored in column C of TABLE
Me.Rows(cell.Offset(0, 2)).EntireRow.Hidden = False
End If
Next
End If
End Sub
In the sheet module the reference "me" is a predefined reference to the sheet that contains the code module - in this case, the sheet you show in your picture.
The above code was tested using the details you provided and it worked as I expected you want it to work. Test it on a copy of your workbook. Just to Emphasize that the code does depend on a Table, just as I have described, exists in a worksheet named TABLE beginning in cell A1.
If you delete the entry in column C, then the code will unhide all rows in the specified data range.
--
Regards,
Tom Ogilvy