I’ve been programming in VBA for a long time and also helping out here for a long time, and over the course of those years when I’ve developed or come across code that is clever and/or useful and/or uses “out of the box” type thinking I save the code snippet in a notebook application where I can readily find and use them when needed, and this article describes a few of my favorites in no particular order.
Two-Color conditional formatting based on another column
I was helping someone with their project and one thing that they wanted to do was to highlight the cells in one of the columns based on the values in another. Her data looked like this.
She wanted the ‘Numbers’ column to be highlighted based on the values in the ‘Count’ column. Looking at the request I said “conditional formatting, no problem”, but when I went to do it I found that it’s not possible to do conditional formatting of one column based on another.
I thought about it a while and realized that the data was the result of a macro and did not have to respond to manual changes, so I could do something a little out of the box. What I came up with was this code which copies the ‘Count’ data to a temporary column, conditionally formats that column and then copies the resulting colors to the ‘Numbers’ column and voilà! Here’s the code I used.
Sub TwoColorCF() Dim lngRow As Long Application.ScreenUpdating = False ' Copy the Count data to a temporary column Range("B2:B16").Copy Destination:=Range("D2:D16") ' Apply 2-color, Yellow to Green, conditional formatting to the copied data. ' The code for this was taken from a macro recording. Range("D2:D16").Select Selection.FormatConditions.AddColorScale ColorScaleType:=2 Selection.FormatConditions(Selection.FormatConditions.Count).SetFirstPriority Selection.FormatConditions(1).ColorScaleCriteria(1).Type = _ xlConditionValueLowestValue With Selection.FormatConditions(1).ColorScaleCriteria(1).FormatColor .Color = 65535 .TintAndShade = 0 End With Selection.FormatConditions(1).ColorScaleCriteria(2).Type = _ xlConditionValueHighestValue With Selection.FormatConditions(1).ColorScaleCriteria(2).FormatColor .ThemeColor = xlThemeColorAccent6 .TintAndShade = 0 End With ' Transfer the conditional formatting colors to the Numbers column For lngRow = 2 To 16 Cells(lngRow, "A").Interior.Color = Cells(lngRow, "D").DisplayFormat.Interior.Color Next ' Delete the temporary column Columns("D").Delete Application.ScreenUpdating = True End Sub
The result was this.
Working with Absolute Addresses
When dealing with addresses in one of the Worksheet methods like SelectionChange, you need to be aware that the addresses contained in the Target are absolute addresses and look something like '$C$7'. Before I knew better and I needed to refer to a specific cell like C7, I would do something like this.
If Replace(Target.Address, "$", "") = "C7" Then
That works, and while everyone but me may have known about it, I "discovered" this built-in feature of Excel, and since it's faster to use what's built into Excel then your own code, I now do this.
If Target.Address(0, 0) = "C7" Then…
The zeros are RowAbsolute and ColumnAbsolute and when 0 (or False) the dollar signs are ignored and when 1 (or True), they’re not.
Centering Text Across Cells Without Merging Them
Merged cells can cause difficulties in VBA and in cases where you want to center text across two or more cells, you can do this rather than merging the cells.
In this case Range("A1") will return the text value while Range("B1") will return a blank.
Using Checkmarks without Having to Use Controls
Checkmarks on a sheet can be useful to indicate for example that you want to do something with an adjacent cell, or that some process is complete. Here’s an easy way to create a checkmark toggle without needing to use a Control. Set the font for the cell(s) to Wingdings 2, make its value an uppercase “P” and add this code.
Private Sub Worksheet_SelectionChange(ByVal Target As Range) If Target.Rows.Count > 1 Then Exit Sub End If If Not Intersect(ActiveCell, Range("B2:B21")) Is Nothing Then Select Case Target Case "" Target = "P" Case Else Target = "" End Select End If End Sub
Clear a Worksheet below its Headings
Here's a simple way to clear a worksheet while retaining the sheet's headings. I use this all the time.
' The '1' is the number of heading rows Activesheet.UsedRange.Cells.Offset(1, 0).ClearContents
You can use 'Clear' instead of 'ClearContents' if you also want to remove formatting.
Convert a Column Letter to a Number and Vice Versa
Function ColLetterToNum(ByVal sColLetter As String) As Long ' Convert a column letter to a number ColLetterToNum = ActiveWorkbook.Worksheets(1).Columns(sColLetter).Column End Function
Function ColNumToLetter(lColNum As Long) As String ' Convert a column number to a letter ColNumToLetter = Split(Cells(1, lColNum).Address, "$")(1) End Function
Detect No entry or Esc in an InputBox
In other words when those pesky users do the unexpected.
Dim strDesired As String strDesired = InputBox("How many do you want?") If StrPtr(strDesired) = 0 Then ' User pressed Escape, clicked 'Cancel' or didn't enter anything MsgBox "You didn't enter anything; quitting" Exit Sub End If
Create Unique Keys for Items in a Collection
Collections are useful ('Dictionaries' are better) for creating, well, collections of data and if you want to include keys with the items in the collection then those keys need to be unique. Here's a simple function for doing that and an example of how to use it.
Public Function UniqueKey() As String '*************************************************************************** 'Purpose: Generate a unique key. Actually there is a one in ' 10 million chance of the key *not* being unique, but the error ' handling code in the calling Sub takes care of that. 'Inputs : None 'Outputs: The key for the Treeview '*************************************************************************** UniqueKey = "K" & 1 + Int(Rnd() * 10000000) End Function
Sub TestUniqueKeyGeneration() Randomize On Error GoTo ErrorRoutine ' Do something with the key. This example will of course ' never cause an error and is just here for illustration. MsgBox UniqueKey ErrorRoutine: If Err.Number = 35602 Then ' Duplicate key, get a different one Resume End If End Sub
I hope you found that one or more of the above was helpful
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