Tạo tổng số cho vùng động bằng VBA trong Microsoft Excel

Option Explicit

Function DynaSum(Optional Rng As Range)

'Declaring variables

Dim Total As Double

Dim LngRow As Long

Dim LngCol As Integer

'Refresh function when value in worksheet is changed

Application.Volatile

'Assigning range if Range is not specified in the function

If Rng Is Nothing Then

Set Rng = Application.Caller

End If

'Getting the column and row number

LngCol = Rng.Column

LngRow = Rng.Row - 1

'Looping through all the cells in the column until blank cell is encountered

Do Until IsEmpty(Cells(LngRow, LngCol))

Total = Total + Cells(LngRow, LngCol)

LngRow = LngRow - 1

If LngRow = 1 Then Exit Do

Loop

'Getting output

DynaSum = Total

End Function