我正在尝试获取所选范围的受抚养人数(如果选择中的单元格数为1)。当我使用下面的代码时,它对所有单元格都没有任何错误(对于没有任何依赖项的单元格和对于具有依赖项的单元格)
'Case 1
Sub Example()
Dim rng As Excel.Range
Set rng = Excel.Selection
If Target.Count = 1 Then
If HasDependents(rng) Then
MsgBox rng.Dependents.Count & " dependancies found."
Else
MsgBox "No dependancies found."
End If
End If
End Sub
Public Function HasDependents(ByVal Something As Excel.Range) As Boolean
On Error Resume Next
HasDependents = Something.Dependents.Count
End Function
但是当在Worksheet_SelectionChange中使用相同的逻辑时(如下面的代码所示)
'Case 2
Sub Worksheet_SelectionChange(ByVal Target As Excel.Range)
If Target.Count = 1 Then
If HasDependents(Target) Then
MsgBox Target.Dependents.Count & " dependancies found."
Else
MsgBox "No dependancies found."
End If
End If
End Sub
Public Function HasDependents(ByVal Something As Excel.Range) As Boolean
On Error Resume Next
HasDependents = Something.Dependents.Count
End Function
适用于没有任何依赖项的单元格,但对于具有依赖项的单元格“Dependents.Count”重新启动宏。执行后
HasDependents = Something.Dependents.Count
语句,宏重启并执行
Sub Worksheet_SelectionChange(ByVal Target As Excel.Range)
一次。我的问题是为什么宏在执行“Dependents.Count”后重新启动第二种情况?
对于“Worksheet_SelectionChange”,我已将代码区域中的代码放在模块中。
答案 0 :(得分:2)
要求Dependents property似乎触发了单元格选择事件。此外,每当找不到依赖项时,错误1004:找不到单元格。被抛出。对家属的检索似乎是递归的;进入每个被发现作为依赖者找到另一层家属。
我通过添加一个禁用Application.EnableEvents property的调用来稳定你的过程,这样就不会自己调用例程了。
Sub Worksheet_SelectionChange(ByVal Target As Excel.Range)
If Target.Count = 1 Then
On Error GoTo bm_Err_Exit
Dim dc As Long
Application.EnableEvents = False
dc = Target.Dependents.Count
If CBool(dc) Then
'MsgBox Target.Address(0, 0) & Chr(10) & Chr(10) & _
dc & " dependancies found."
Debug.Print Target.Address(0, 0) & Chr(10) & _
dc & " dependancies found."
Else
'never reaches here; error 1004 is thrown when no dependents
'MsgBox "No dependancies found."
Debug.Print "No dependancies found."
End If
End If
bm_Safe_Exit:
Application.EnableEvents = True
Exit Sub
bm_Err_Exit:
Debug.Print Err.Number & ": " & Err.Description
Application.EnableEvents = True
End Sub
当前选择没有依赖时,基本错误控制报告了1004错误。
¹您可能想要探索DirectDependents property以及Dependents property。