如果在Excel中選擇了一個或多個區域，用下面的VBA代碼可以統計當前工作表所選區域中單元格（或行、列）的數量：

1. 統計選定區域中的單元格數量：

Sub CountCellsInSelection()
Dim CellsNum As Integer
CellsNum = Selection.Count
MsgBox "所選區域中的單元格數量為： " & CellsNum
End Sub

2.統計選定區域中所包含的行數，如果選擇了多個區域，則統計行數之和。

Sub CountRowsInSelection()
Dim RowsNum As Integer
For i = 1 To Selection.Areas.Count
RowsNum = RowsNum + Selection.Areas(i).Rows.Count
Next i
MsgBox "所選區域中的行數為： " & RowsNum
End Sub

3.統計選定區域中所包含的列數，如果選擇了多個區域，則統計列數之和。

Sub CountColumnsInSelection()
Dim ColumnsNum As Integer
For i = 1 To Selection.Areas.Count
ColumnsNum = ColumnsNum + Selection.Areas(i).Columns.Count
Next i
MsgBox "所選區域中的列數為： " & ColumnsNum
End Sub

4.統計選定區域中的非空單元格數量：

Sub CountNonBlankInSelection()
Dim NonBlankNum As Integer
NonBlankNum = Application.CountA(Selection)
MsgBox "所選區域中包含非空單元格有" & NonBlankNum & "個。"
End Sub

5.統計選定區域中有填充色的單元格數量：

Sub CountColorCellsInSelection()
Dim ColorCellsNum As Integer
Dim rCell As Range
For Each rCell In Selection
If rCell.Interior.ColorIndex > 0 Then
ColorCellsNum = ColorCellsNum + 1
End If
Next rCell
MsgBox "所選區域中填充了顏色的單元格有" & ColorCellsNum & "個。"
End Sub

6.統計選定區域中包含公式的單元格數量：

Sub CountFormulaInSelection()
Dim FormulaNum As Integer
Dim rCell As Range
For Each rCell In Selection
If rCell.HasFormula Or rCell.HasArray Then
FormulaNum = FormulaNum + 1
End If
Next rCell
MsgBox "所選區域中包含公式的單元格有" & FormulaNum & "個。"
End Sub