去除字符串中的空行

Remove blank line in a string

我想删除字符串中的空行,如下所示:

"第一节

第二节

第三节

我在每张内容幻灯片上显示一个滚动索引,这样当您单击幻灯片时,索引会突出显示您所在的部分。我不想显示小节,所以我尝试替换以“开头的部分名称-" 和 "",但这意味着我有空行。所以现在我想删除空行。

我试过了:

我试过类似下面的方法:

Dim RE As Object
Set RE = CreateObject("VBScript.RegExp")

With RE
    .Multiline = True
    .Global = True  
    resultString = .Replace(subjectString, "\s\n", string.empty)
    MsgBox resultString
End With

我在 Whosebug 上找到的另一个可能的解决方案。

Dim xArr() as string
xArr = Split(TextBox1.Value, vbCrLf)
TextBox1.Value = ""

for i = 0 to Ubound(xArr)
    If Trim(xArr(i)) <> "" Then
        TextBox1.value = TextBox1.value & xArr(i) & vbCrLf
    End If
Next

看起来您的 RegEx 代码实际上是针对 VB.Net 而不是 VBA,下面的代码将 n 空行替换为 [=21] 中的 1 =].

Dim RE As Object: Set RE = CreateObject("VBScript.RegExp")

With RE
    .MultiLine = True
    .Global = True
    .Pattern = "(\r\n)+"

    resultString = .Replace(subjectString, vbCrLf)

    MsgBox resultString
End With

当然,如果你只有 2 个空行,你可以简单地:

resultString = replace$(subjectString, vbcrlf & vbcrlf, vbcrlf)

我知道这已经过时了,但这里有一个正则表达式 Public 函数是我用来提供帮助的。可能有更好的方法,但这对我来说很简单并且有效。

'=================================================================================='
Public Function RegExReplace(TextContent As String, SearchEx As String, Optional ReplaceEx As String = "", Optional _
                    EmptyLines As Boolean = False, Optional TrimLines As Boolean = True) As String
    Dim regEx As Object, strOutput As String
    Set regEx = CreateObject("vbscript.regexp")
    With regEx: .Global = True: .IgnoreCase = False: .MultiLine = True: .Pattern = SearchEx: End With
    TextContent = regEx.Replace(TextContent, ReplaceEx)
    If EmptyLines = False Then TextContent = RegExReplace(TextContent, "\r\n\r\n", "", True, False)
    If TrimLines = True Then TextContent = Trim(TextContent)
    
    RegExReplace = TextContent: Set regEx = Nothing
End Function
'=================================================================================='

如果出于某种原因您希望避免使用 RegEx(例如在 Mac 上工作,其中 VBScript 不可用),这里有一个纯粹的 VB 方法:

Sub Test()
    Call TakeOutTheEmpties(ActiveWindow.Selection.ShapeRange(1))
End Sub
Sub TakeOutTheEmpties(oSh As Shape)

    Dim oPara As TextRange
    Dim x As Long
    
    If oSh.HasTextFrame Then
        If oSh.TextFrame.HasText Then
            For x = oSh.TextFrame.TextRange.Paragraphs.Count To 1 Step -1
                Set oPara = oSh.TextFrame.TextRange.Paragraphs(x)
                If oPara.Text = vbCr Then
                    oPara.Delete
                End If
            Next
        End If
    End If

End Sub