与非打印字符的正则表达式问题

Question

我想创建一个返回一个或多个字符串匹配的正则表达式，它驱使我坚果。

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

以上应该是查找ETX（char 3）的开始字符和回车的结束字符。

我想要每个开始和结束字符“块”之间的文本。

我在做什么错？

Answer 1

其实不理我，它确实有效。认为在调试期望为零的匹配属性期间，我感到困惑。一个小测试证明它是可以的（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())