请尝试下一个功能:
Function RndCell(rng As Range) As Range
Dim rndRow As Long, rndCol As Long
rndRow = WorksheetFunction.RandBetween(1, rng.rows.count)
rndCol = WorksheetFunction.RandBetween(1, rng.Columns.count)
Set RndCell = rng.cells(rndRow, rndCol)
End Function
可以使用下一个简单的 sub 对其进行测试:
Sub testSelectRandomCell()
Dim rng As Range
Set rng = Range("A2:D10")
RndCell(rng).Select
End Sub
编辑:
如果随机选择的单元格不应该重复,该函数可以通过下一种方式进行调整(使用Static
数组来保留已经选择的单元格):
Function RndCellOnce(rng As Range, Optional boolClear As Boolean = False) As Range
Dim rndRow As Long, rndCol As Long, k As Long, El, arr1
Static arr
If boolClear And IsArray(arr) Then Erase arr
DoItAgain:
rndRow = WorksheetFunction.RandBetween(1, rng.rows.count)
rndCol = WorksheetFunction.RandBetween(1, rng.Columns.count)
If IsArray(arr) Then
If UBound(arr) = rng.cells.count - 1 Then
rng.Interior.Color = xlNone
ReDim arr(0): GoTo Over
End If
For Each El In arr
If El <> "" Then
arr1 = Split(El, "|")
If CLng(arr1(0)) = rndRow And CLng(arr1(1)) = rndCol Then GoTo DoItAgain
End If
Next El
ReDim Preserve arr(UBound(arr) + 1)
Else
ReDim arr(0)
End If
Over:
arr(UBound(arr)) = rndRow & "|" & rndCol
Set RndCellOnce = rng.cells(rndRow, rndCol)
End Function
可以用下一个 Sub 进行测试。为了直观地检查它,每个选定的单元格都将获得黄色的内部颜色。当所有范围单元格将被选中(一个接一个)时,将擦除静态数组并清除内部颜色:
Sub testSelectRandomCell()
Dim rng As Range
Set rng = Range("A2:D10")
With RndCellOnce(rng)
.Interior.Color = vbYellow
.Select
End With
End Sub