5

这应该很简单。当单元格的值发生变化时，我想触发一些 VBA 代码。单元格 (D3) 是来自其他两个单元格的计算=B3*C3。我尝试了两种方法：

Private Sub Worksheet_Change(ByVal Target As Range)
  If Target.Column = 4 And Target.Row = 3 Then
    MsgBox "There was a change in cell D3"
  End If
End Sub

由于单元格是一个计算，因此当值更改时不会触发，因为计算保持不变。我也试过：

Private Sub Worksheet_Calculate()
  MsgBox "There was a calculation"
End Sub

但是我在工作表上有多个计算，它会触发多次。有没有办法可以确定计算事件中哪个计算发生了变化？还是有另一种方法可以跟踪 D3 何时更改？

4

4 回答 4

7

你能试试这样的东西吗？将公式更改为=D3AlertOnChange(B3*C3)。

Private D3OldVal As Variant

Public Function D3AlertOnChange(val)
    If val <> D3OldVal Then MsgBox "Value changed!"
    D3OldVal = val
    D3AlertOnChange = val
End Function
于 2013-08-29T00:59:03.123 回答
3

或者试试

Private Sub Worksheet_Change(ByVal Target As Range)
Dim numdependences As Integer
On Error Resume Next
HasDependents = Target.Dependents.Count
If Err = 0 Then
    If InStr(Target.Dependents.Address, "$D$3") <> 0 Then
        MsgBox "change"
    End If
End If
On Error GoTo 0
End Sub

如果您更改没有依赖项的单元格，则需要错误控制。

于 2013-08-29T09:51:33.707 回答
1

尝试这个：

 Sub Worksheet_Change(ByVal Target As Range)

    If Not Intersect(Target, Target.Worksheet.Range("B1")) Is Nothing Then

      Call macro

    End If

 End Sub

查找单元格 B1 值的变化，然后执行“宏”

于 2015-05-13T18:20:39.943 回答
1

如果您只查看 Worksheet_Change，那么即使输入的值与之前的值相同，它也会计算任何输入的更改。为了克服这个问题，我使用公共变量来捕获起始值并进行比较。

这是我执行此操作的代码。它还允许您省略工作表的某些部分，或者您可以使用它来评估工作表中的每个单元格。

将此代码放在工作表中。

Public TargetVal As String 'This is the value of a cell when it is selected


Private Sub Worksheet_SelectionChange(ByVal Target As Range)
If Target.Cells.CountLarge > 1 Then 'If more then one cell is selected do not save TargetVal. CountLarge is used to protect from overflow if all cells are selected.
    GoTo EXITNOW
Else
    TargetVal = Target 'This sets the value of the TargetVal variable when a cell is selected
End If
EXITNOW:
End Sub

 Sub Worksheet_Change(ByVal Target As Range)
'When a cell is modified this will evaluate if the value in the cell value has changed.
'For example if a cell is entered and enter is pressed the value is still evaluated
'We don't want to count it as a change if the value hasn't actually changed

Dim ColumnNumber As Integer
Dim RowNumber As Integer
Dim ColumnLetter As String

'---------------------
'GET CURRENT CELL INFO
'---------------------
    ColumnNumber = Target.Column
    RowNumber = Target.Row
    ColumnLetter = Split(Target.Address, "$")(1)

'---------------------
'DEFINE NO ACTION PARAMETERS
'   IF CELL CHANGED IS IN NO ACTION RANGE, EXIT CODE NOW FOR PERFORMANCE IMPROVEMENT OR TO NOT TAKE ACTION
'---------------------
    If ColumnNumber <> 4 Then 'This would exempt anything not in Column 4
        GoTo EXITNOW
    ElseIf RowNumber <> 3 Then 'This would exempt anything not in Row 3
        GoTo EXITNOW
    'Add Attional ElseIf statements as needed
    'ElseIf ColumnNumber > 25 Then
        'GoTo EXITNOW
    End If

'---------------------
'EVALUATE IF CELL VALUE HAS CHANGED
'---------------------
Debug.Print "---------------------------------------------------------"
Debug.Print "Cell: " & ColumnLetter & RowNumber & " Starting Value: " & TargetVal & " | New Value: " & Target

    If Target = TargetVal Then
        Debug.Print " No Change"
        'CALL MACRO, FUNCTION, or ADD CODE HERE TO DO SOMETHING IF NOT CHANGED
    Else
        Debug.Print " Cell Value has Changed"
        'CALL MACRO, FUNCTION, or ADD CODE HERE TO DO SOMETHING IF CHANGED
    End If
Debug.Print "---------------------------------------------------------"

EXITNOW:
 End Sub
于 2018-02-21T20:25:09.257 回答