與非打印字符的正則表達式問題

Question

我想創建一個返回一個或多個字符串匹配的正則表達式，它驅使我堅果。

(?<=\x03).*?(?=\r) 

以上應該是查找ETX（char 3）的開始字符和回車的結束字符。

我想要每個開始和結束字符「塊」之間的文本。

我在做什麼錯？

Answer 1

其實不理我，它確實有效。認爲在調試期望爲零的匹配屬性期間，我感到困惑。一個小測試證明它是可以的（在VB中）。

Dim TestString1 As String = Chr(3) & "Some Text to Extract 1" & Chr(13) 
    Dim TestString2 As String = Chr(3) & "Some Text to Extract 2" & Chr(13) 
    Dim TestString3 As String = Chr(3) & "Some Text to Extract 3" & Chr(13) 

    Dim TestString As String = TestString1 & " random noise " & TestString2 & " more random noise " & TestString3 
    Dim Matches As MatchCollection = Regex.Matches(TestString, "(?<=\x03).*?(?=\r)") 

    Dim Index As Integer = 0 
    Dim result As New StringBuilder 
    result.Append("No of Matches found = " & Matches.Count & vbCrLf & vbCrLf) 
    For Each m As Match In Matches 
     Index += 1 
     result.Append(Index & ": " & m.Groups(0).Value & vbCrLf) 
    Next 

    MessageBox.Show(result.ToString())