使用VBA循环列

Question

我想遍历各列。

我不确定范围。 我应该在字母作为列的地方使用正常范围吗？

我尝试了不同的代码。 例如：

Sub copytest()

Dim x As Workbook
Dim j As Integer, i As Integer

Application.ScreenUpdating = False

Workbooks.Open ("D:\test\COMP.xlsx")

i = 3

For j = 3 To 14

    Sheets("Compliance").Range(Cells(18, i), Cells(30, i)).Copy
    Windows("KP.xlsm").Activate
    Sheets("MOH").Range(Cells(12, j), Cells(24, j)).PasteSpecial Paste:=xlPasteValues, Operation:=xlNone, SkipBlanks _
      :=False, Transpose:=False

    i = i + 2

Next j

x.Close
End Sub

Answer 1

您可以将数字用于列。 假设您要遍历前5行和前5列，然后可以将其写为

For i = 1 To 5 '<~~~ Rows
    For j = 1 To 5 '<~~~ Columns
        With ThisWorkbook.Cells(i, j)
            '~~> Do something
        End With
    Next j
Next i

在Excel 2013中，最后一列是XFD，其列号为16384。

A - 1
B - 2
C - 3 
.
.
and so on...
XFD - 16384

如果您想循环使用列名，则可以这样使用它

Dim ColName As String

For i = 1 To 5 '<~~~ Rows
    For j = 1 To 5 '<~~~ Columns
       ColName  = Split(Cells(, j).Address, "$")(1)
        With ThisWorkbook.Range(ColName & i)
            '~~> Do something
        End With
    Next j
Next i

Answer 2

通过列循环的另一种方法是For Each cell in my1RowRange循环中的For Each cell in my1RowRange ，其中

• cell是在my1RowRange Range上循环的单单元格Range对象

• my1RowRange必须为1行Range

除此之外，您的代码还存在一些主要缺陷：

• 您的范围引用使用简单的 Cells(...)引用，之前没有任何明确的worksheet和workbook引用

  这样他们就可以继续引用活动 worksheet workbook中的活动 workbook worksheet

  这是不好的，因为在循环过程中，您似乎只在不断更改正确的工作簿，而实际上在开始时只对其进行了一次更改（ Windows("KP.xlsm").Activate ），然后它始终是唯一被引用的工作簿工作簿

• 避免使用Activate / ActiveXXX （以及Select / Selection ）编码，因为

  • 它容易出错，就像事实证明的那样，因为它很可能导致您失去对实际活动工作簿/工作表的控制

  • 这很耗时，并且会出现屏幕闪烁

因此，请考虑以下代码重构：

Option Explicit

Sub copytest()
    Dim i As Long
    Dim compWb As Workbook
    Dim compRng As Range, cell As Range

    Set compWb = Workbooks.Open "D:\test\COMP.xlsx" '<--| set the workbook to open to a specific variable of 'Workbook' type

    With compWb.Worksheets("Compliance") '<--| refer to "compliance" worksheet of the "right" (you're explicitly referencing it!) workbook
        Set compRng = .Range(.Cells(18, 3), .Cells(30, 3)) '<--| set the "source" range: all the dots means we're referencing the object after the last "With" statement
    End With

    i = 3
    With Workbooks("KP.xlsm").Worksheets("MOH") '<--| refer to "MOH" worksheet of "KP" workbook
        For Each cell In .Range(.Cells(12, 3), .Cells(12, 14)) '<--| loop through cells of a 1-row range of the referenced worksheet: this means looping through columns!
            cell.Resize(13).Value = compRng.Offset(, i - 3).Value '<--| paste values while offsetting the "souce" range columns (first iteration with offset=0)
            i = i + 2
        Next cell
    End With

    compWb.Close '<--| close the opened workbook
End Sub

Answer 3

Sub Columns()

Dim rng As Range
Dim col As Range
Sheets("Sheet1").Select 'make shure its in the correct sheet

Set rng = Range("C3:G6") 'select the range of the whole table


For Each col In rng.Columns 'this performs a tasks column by column
    'Do Something
    col.Select
    Selection.RemoveDuplicates Columns:=1, Header:=xlNo
    'end something

Next col 'move to next column

End Sub