How to find duplicate entries in a column by using a macro in Excel 2000

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Article ID: 213355 - View products that this article applies to.
This article was previously published under Q213355
For a Microsoft Excel 97 version of this article, see 142591.
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SUMMARY

The Microsoft Visual Basic for Applications sample macro in this article finds duplicate cell entries within a column, and changes the color of the cell containing the duplicate entry to red.

MORE INFORMATION

Microsoft provides programming examples for illustration only, without warranty either expressed or implied, including, but not limited to, the implied warranties of merchantability and/or fitness for a particular purpose. This article assumes that you are familiar with the programming language being demonstrated and the tools used to create and debug procedures. Microsoft support professionals can help explain the functionality of a particular procedure, but they will not modify these examples to provide added functionality or construct procedures to meet your specific needs.
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For the macro to work correctly, make sure both of the following conditions have been met:
  • The column in which you want to find duplicates has been sorted based on values in that column.

    -and-
  • The first cell in the column in which you want to find duplicates is selected.

Sample Visual Basic Code

Sub FindDups ()
   '
   ' NOTE: You must select the first cell in the column and
   ' make sure that the column is sorted before running this macro
   '
   ScreenUpdating = False
   FirstItem = ActiveCell.Value
   SecondItem = ActiveCell.Offset(1, 0).Value
   Offsetcount = 1
   Do While ActiveCell <> ""
      If FirstItem = SecondItem Then
        ActiveCell.Offset(Offsetcount,0).Interior.Color = RGB(255,0,0)
        Offsetcount = Offsetcount + 1
        SecondItem = ActiveCell.Offset(Offsetcount, 0).Value
      Else
        ActiveCell.Offset(Offsetcount, 0).Select
        FirstItem = ActiveCell.Value
        SecondItem = ActiveCell.Offset(1,0).Value
        Offsetcount = 1
      End If
   Loop
   ScreenUpdating = True
End Sub
				

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Article ID: 213355 - Last Review: November 23, 2006 - Revision: 3.6
APPLIES TO
  • Microsoft Excel 2000 Standard Edition
Keywords: 
kbsample kbdtacode kbhowto kbinfo kbprogramming KB213355

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