Question

以下VBA位将突出显示工作表中包含数据验证错误的所有单元格：

Sub CheckValidation(sht As Worksheet)
Dim cell As Range
Dim rngDV As Range
Dim dvError As Boolean

On Error Resume Next
Set rngDV = sht.UsedRange.SpecialCells(xlCellTypeAllValidation)
On Error GoTo 0

If rngDV Is Nothing Then
    sht.ClearCircles
Else
    dvError = False
    For Each cell In rngDV
        If Not cell.Validation.Value Then
            dvError = True
            Exit For
        End If
    Next

    If dvError Then
        sht.CircleInvalid
        sht.Activate
    Else
        sht.ClearCircles
    End If
End If
End Sub

但是，“For Each”循环在具有大量数据验证的工作表中运行速度非常慢。

有没有人知道如何避免“For Each”循环，或以某种方式加速？

我原以为以下等同于设置'dvError'的值：

dvError = Not rngDV.Validation.Value

但由于某些原因，即使存在数据验证错误，rngDV.Validation.Value也是如此。

Answer 1

我的要求略有不同，我希望将用户输入的值限制为有效的日期范围或我使用以下方法解析的文字“ASAP”;

Private Sub Worksheet_Change(ByVal Target As Range)
    Dim sErr        As String
    Dim sProc       As String

    On Error GoTo ErrHandler

    Application.EnableEvents = False

    Select Case Target.Column
    Case 11
        sProc = "Validate Date"

        'The value must be a date between "1 Nov 2011" and "30 Jun 2012" or "ASAP"...
        If IsDate(Target.Value) Then
            If Target.Value < CDate("2011-11-01") _
            Or Target.Value > CDate("2012-06-30") Then
                Err.Raise vbObjectError + 1
            End If
        ElseIf LCase(Target.Value) = "asap" Then
            Target.Value = "ASAP"
        ElseIf Len(Trim(Target.Value)) = 0 Then
            Target.Value = vbNullString
        Else
            Err.Raise vbObjectError + 1
        End If
    End Select

ErrHandler:
    Select Case Err.Number
    Case 0
        'Nothing to do...
    Case vbObjectError + 1
        sErr = "The Date must be between ""1 Nov 2011"" and ""30 Jun 2012"" or equal ""ASAP""."
    Case Else
        sErr = Err.Description
    End Select

    If Len(Trim(sErr)) > 0 Then
        Target.Select
        MsgBox sErr, vbInformation + vbOKOnly, sProc
        Target.Value = vbNullString
    End If

    Application.EnableEvents = True
End Sub

Answer 2

尝试使用4536个包含验证的单元格，你的代码运行得非常快 - 因为你在第一次出现未经验证的单元格时正确地破坏了你的FOR

我尝试通过以下方式在代码的各个点测量时间：

Dim Tick As Variant
Tick = Now()
' ... code
Debug.Print "ValCount", rngDV.Cells.Count ' just to see how many cells are in that range
' ... code
Debug.Print "Pt1",  (Now() - Tick) * 86400000 'display milliseconds
' ... code
Debug.Print "Pt2",  (Now() - Tick) * 86400000 'display milliseconds
' ... code
Debug.Print "Pt3",  (Now() - Tick) * 86400000 'display milliseconds
' etc.

并且有一个不可测量的延迟（当通过F8步进调试器时除外 - 当然）

作为一般提示...试着找出你的代码在哪里很慢，让我们从那里开始。

检查Excel 2003数据验证

2 个答案: