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Looping Through a Range of Cells [Excel 2003 VBA Language Reference]

Office 2003

When using Visual Basic, you often need to run the same block of statements on each cell in a range of cells. To do this, you combine a looping statement and one or more methods to identify each cell, one at a time, and run the operation.

One way to loop through a range is to use the For...Next loop with the Cells property. Using the Cells property, you can substitute the loop counter (or other variables or expressions) for the cell index numbers. In the following example, the variable counter is substituted for the row index. The procedure loops through the range C1:C20, setting to 0 (zero) any number whose absolute value is less than 0.01.

Sub RoundToZero1()
    For Counter = 1 To 20
        Set curCell = Worksheets("Sheet1").Cells(Counter, 3)
        If Abs(curCell.Value) < 0.01 Then curCell.Value = 0
    Next Counter
End Sub
		

Another easy way to loop through a range is to use a For Each...Next loop with the collection of cells specified in the Range property. Visual Basic automatically sets an object variable for the next cell each time the loop runs. The following procedure loops through the range A1:D10, setting to 0 (zero) any number whose absolute value is less than 0.01.

Sub RoundToZero2()
    For Each c In Worksheets("Sheet1").Range("A1:D10").Cells
        If Abs(c.Value) < 0.01 Then c.Value = 0
    Next
End Sub
		

If you don't know the boundaries of the range you want to loop through, you can use the CurrentRegion property to return the range that surrounds the active cell. For example, the following procedure, when run from a worksheet, loops through the range that surrounds the active cell, setting to 0 (zero) any number whose absolute value is less than 0.01.

Sub RoundToZero3()
    For Each c In ActiveCell.CurrentRegion.Cells
        If Abs(c.Value) < 0.01 Then c.Value = 0
    Next
End Sub
		




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