VBA的新增功能：字符串創建時出現#Value錯誤

Question

抱歉，我認為該錯誤是基本錯誤，但是我不確定自己在做什么錯誤。

我正在嘗試編寫一個函數，該函數需要一個單元格並將紅色標記的字符轉換為小寫字母。 我通過在新變量中重建字符串來實現。

然后返回此重建的字符串。 但是，當我嘗試在字符串中的Excel中使用此函數時，它將返回#Value錯誤。 該代碼沒有編譯錯誤，所以我很茫然。 任何幫助，將不勝感激。

    Function Convert_Red(rng As Range)

    If (rng.Cells.Count > 1) Then
         AcceptOneCell = "Only allow 1 cell"
         Exit Function
    End If

    Dim i As Long
    Dim text As String
    Dim new_text As String
    Dim placeholder As String

    text = rng.Cells(1, 1).Value

    For i = 1 To Len(text)
        If rng.Cells(1, 1).Characters(Start:=i, Length:=1).Font.Color  vbRed 
    Then
        new_text = new_text + LCase(rng.Cells(1, 1).Characters(Start:=i, 
    Length:=1))
        Else
            new_text = new_text + rng.Cells(1, 1).Characters(Start:=i, Length:=1)
       End If
       i = i + 1
    Next

    Convert_Red = new_text

    End Function

Answer 1

我猜您當前的代碼是什么，因為發布的代碼無法編譯。 我相信您遵循以下條件：

Function Convert_Red(rng As Range)

    If (rng.Cells.Count > 1) Then
        'Use the correct function name when returning a result
        'AcceptOneCell = "Only allow 1 cell"
        Convert_Red = "Only allow 1 cell"
        Exit Function
    End If

    Dim i As Long
    Dim text As String
    Dim new_text As String
    Dim placeholder As String

    text = rng.Cells(1, 1).Value

    For i = 1 To Len(text)
        'Fix syntax errors
        'If rng.Cells(1, 1).Characters(Start:=i, Length:=1).Font.Color  vbRed
        'Then
        If rng.Cells(1, 1).Characters(Start:=i, Length:=1).Font.Color = vbRed Then
            ' 1) Fix syntax errors
            ' 2) Use & for string concatenation
            ' 3) A Characters object has no default property - specify Text
            'new_text = new_text + LCase(rng.Cells(1, 1).Characters(Start:=i, 
            'Length:=1))
            new_text = new_text & LCase(rng.Cells(1, 1).Characters(Start:=i, Length:=1).Text)
        Else
            ' 1) Use & for string concatenation
            ' 2) A Characters object has no default property - specify Text
            'new_text = new_text + rng.Cells(1, 1).Characters(Start:=i, Length:=1)
            new_text = new_text & rng.Cells(1, 1).Characters(Start:=i, Length:=1).Text
        End If
        'Don't mess with the loop counter
        'i = i + 1
    Next

    Convert_Red = new_text

End Function

請注意，如果源范圍包含公式，數值或日期，則無法使用“ Characters 。

Answer 2

嘗試這個：

Option Explicit

Public Function LCaseReds(rng As Range)

    Dim i As Long, ltr As String, adr As String, result As String

    Select Case True
        Case rng.Cells.Count > 1: result = "Use only one cell"
        Case Len(rng.Value2) = 0: result = "Empty cell: '" & rng.Address(False, False) & "'"
        Case Else:
            For i = 1 To Len(rng)
                With rng.Characters(Start:=i, Length:=1)
                    ltr = .Text
                    result = result + IIf(.Font.Color = vbRed, LCase(ltr), ltr)
                End With
            Next
    End Select

    LCaseReds = result

End Function

請注意，您仍然會獲得#Value！ 使用多個區域（C3，E3）時