Excel User Defined Function: change the cell's color

Question

I have a user defined function in Excel. It is called as a formula function from spreadsheet cells and works fine.

I\'d like the function to be able to change the ce

Answer 1

Here's a demonstration of how a VBA UDF can change the colouring of a sheets contents rather than using conditional formatting.

As long as both sheets have rows and columns sorted in the same order then this will compare for differences in every cell between two seperate Excel sheets.

You can add this into as many cells as you need to on a third sheet to detect differences between the same two cells on the two sheets with data on: =DifferenceTest(Sheet1!A1,Sheet2!A1)

And the function to be stored in the VBA editor as follows:

Function DifferenceTest(str1 As String, str2 As String) As String

    If str1 = str2 Then
            Application.Caller.Font.ColorIndex = 2
    Else
            Application.Caller.Font.ColorIndex = 3
            DifferenceTest = str1 & " vs " & str2
    End If

End Function