XL97: Deleting Cells with a For Each...Next Loop

ID: Q159915

The information in this article applies to:

Microsoft Excel 97 for Windows

SUMMARY

The way that Microsoft Excel 97 deletes cells in a For Each...Next loop in differs from the way that earlier versions of Microsoft Excel delete cells.

This article describes the differences and provides a Visual Basic for Applications macro example that illustrates how to delete cells in a loop.

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. If you have limited programming experience, you may want to contact the Microsoft fee-based consulting line at (800) 936-5200. For more information about the support options available from Microsoft, please see the following page on the World Wide Web:

http://www.microsoft.com/support/supportnet/overview/overview.asp

Typing Sample Data

To use the macro in this article, type the following sample data in a worksheet:


   A1:  a  B1:  1
   A2:  b  B2:  2
   A3:  x  B3:  3
   A4:  x  B4:  4
   A5:  c  B5:  5
   A6:  x  B6:  6
   A7:  d  B7:  7
   A8:  x  B8:  8
   A9:  x  B9:  9
   A10: e  B10: 10

Typing the Sample Macro

In a new macro module, type the following macro:


   Sub DeleteCells()
 
       'Loop through cells A1:A10 and delete cells that contain an "x."
       For Each c in Range("A1:A10")
           If c = "x" Then c.EntireRow.Delete
       Next
 
   End Sub

Behavior of the Sample Macro in Microsoft Excel 97

When you run the macro DeleteCells in Microsoft Excel 97, only rows 3, 6 and 8 are deleted. Although rows 4 and 9 contain an "x" in column A, the macro does not delete the rows. The results of the macro in Microsoft Excel 97 are as follows:


   A1: a   B1: 1
   A2: b   B2: 2
   A3: x   B3: 4
   A4: c   B4: 5
   A5: d   B5: 7
   A6: x   B6: 9
   A7: e   B7: 10

When Microsoft Excel deletes row 3, all cells move up one row. For example, cell A3 assumes the contents of cell A4, cell A4 assumes the contents of cell A5, and so forth. After the For Each...Next loop evaluates a cell, it evaluates the next cell; thus, when cells are shifted, they may be skipped by the loop.

Behavior of the Sample Macro in Microsoft Excel 5.0 and 7.0

When you run the macro DeleteCells in Microsoft Excel 5.0 and 7.0, the macro deletes all rows that contain an "x." The results of the macro in Microsoft Excel 5.0 or 7.0 are as follows:


   A1: a   B1: 1
   A2: b   B2: 2
   A3: c   B3: 5
   A4: d   B4: 7
   A5: e   B5: 10

When row 3 is deleted, all cells move up one row; and cell A3 assumes the contents of cell A4, cell A4 assumes the contents of cell A5, and so forth.

However, unlike the behavior of the loop in Microsoft Excel 97, when the For Each...Next loop evaluates a cell in Microsoft Excel 5.0 and 7.0, it reevaluates the cell if it is deleted in the loop; thus, the cells are not skipped.

Recommended Method for Using a Loop to Delete Cells

Use the following macro when you want to use a loop to delete cells:


   Sub DeleteCells2()
 
       Dim rng As Range
       Dim i As Integer, counter As Integer
 
       'Set the range to evaluate to rng.
       Set rng = Range("A1:A10")
 
       'initialize i to 1
       i = 1
 
       'Loop for a count of 1 to the number of rows
       'in the range that you want to evaluate.
       For counter = 1 To rng.Rows.Count
 
           'If cell i in the range contains an "x",
           'delete the row.
           'Else increment i
           If rng.Cells(i) = "x" Then
               rng.Cells(i).EntireRow.Delete
           Else
               i = i + 1
           End If
 
       Next
 
   End Sub

The results of this macro in Microsoft Excel 97 and earlier versions are as follows:


   A1: a   B1: 1
   A2: b   B2: 2
   A3: c   B3: 5
   A4: d   B4: 7
   A5: e   B5: 10

Additional Method for Using a Loop to Delete Cells

This is an alternate method to the method shown above. It will produce the same results.


   Sub DeleteCells3()
 
       Dim rng As Range, i As Integer
 
       'Set the range to evaluate to rng.
       Set rng = Range("A1:A10")
 
       'Loop backwards through the rows
       'in the range that you want to evaluate.
       For i = rng.Rows.Count To 1 Step -1
 
           'If cell i in the range contains an "x", delete the entire row.
           If rng.Cells(i).Value = "x" Then rng.Cells(i).EntireRow.Delete
       Next
 
   End Sub

REFERENCES

For more information about looping in a macro, click the Index tab in Visual Basic for Applications Help, type the following text

loops

and then double-click the selected text to go to the "Looping Through Code" topic.

Additional query words: XL97 8.0 8.00

Keywords : kbprg kbdta kbdtacode KbVBA xlvbmigrate
Version : WINDOWS:97
Platform : WINDOWS
Issue type :