使用字符串变量为列字母设置范围

Question

我想知道如何将这个范围改变 "G" 写入字符串变量strColumn 。

这是我要更改的代码：

   Dim lastRowElemento As Integer
   lastRowElemento = Cells(Rows.Count, "G").End(xlUp).Row
   Set rngElemento = ws.Range("G2:G" & lastRowElemento)

Answer 1

引用“非空”列范围

• 其实有两个要求：

  • ColumnString = G （我更喜欢字符串，因为例如XFD是字母s ）
  • FirstRow = 2

  如果你把它们放在一起，你会得到G2 （想想一个，而不是两个变量）。

• 由于在查找列中最底部（最后一个）非空单元格时，使用Find方法比使用End属性更可靠，​​因此我使用它来编写RefColumn函数，在您的情况下，该函数可以通过以下方式使用：

   Set rngElemento = RefColumn(ws.Range("G2"))

• 如果你要测试是否有数据（通常你知道有），我会留给你，但我更喜欢在代码中至少保留一个“简化”的测试：

   If rngElemento is Nothing Then Exit Sub ' no data ' Continue...

编码

Option Explicit

Sub RefColumnTEST()
    Dim wb As Workbook: Set wb = ThisWorkbook ' workbook containing this code
    Dim ws As Worksheet: Set ws = wb.Worksheets("Sheet1")
    Dim rg As Range: Set rg = RefColumn(ws.Range("G2"))
    If rg Is Nothing Then ' the range 'G2:G1048576' is empty
        MsgBox "No data.", vbCritical
    Else
        MsgBox rg.Address(0, 0), vbInformation
    End If
End Sub

''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
' Purpose:      Creates a reference to the one-column range from the first cell
'               of a range ('FirstCell') to the bottom-most non-empty cell
'               of the first cell's worksheet column.
''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''
Function RefColumn( _
    ByVal FirstCell As Range) _
As Range
    If FirstCell Is Nothing Then Exit Function
    
    With FirstCell.Cells(1)
        Dim lCell As Range
        Set lCell = .Resize(.Worksheet.Rows.Count - .Row + 1) _
            .Find("*", , xlFormulas, , , xlPrevious)
        If lCell Is Nothing Then Exit Function
        Set RefColumn = .Resize(lCell.Row - .Row + 1)
    End With

End Function

满足您的要求

• 与我的首选方式类似，您可以使用RefData函数：

Function RefData( _
    ByVal ws As Worksheet, _
    ByVal ColumnIndex As Variant) _
As Range
    On Error GoTo ClearError
    
    With ws.Columns(ColumnIndex).Resize(ws.Rows.Count - 1).Offset(1)
        Set RefData = _
            .Resize(.Find("*", , xlFormulas, , , xlPrevious).Row - 1)
    End With

ProcExit:
    Exit Function
ClearError:
    Resume ProcExit
End Function

您可以通过以下方式使用它：

Set rngElemento = RefData(ws, "G")
Set rngElemento = RefData(ws, 7)
' or:
Const strColumn As String = "G"
Set rngElemento = RefData(ws, strColumn)

Answer 2

应用OP的方法，试试这个：

Sub TEST()
Dim ws As Worksheet, Rng As Range, sCol As String
    sCol = "G"
    Set ws = ThisWorkbook.Sheets("TEST")    'change as required
    With ws.Columns(sCol)
        Set Rng = Range(.Cells(2), .Cells(.Rows.Count).End(xlUp))
    End With
    End Sub