VB.NET MAC是查找

Question

早上好，

我创建了一个vb.NET项目，它从https://code.wireshark.org/review/gitweb?p=wireshark.git;a=blob_plain;f=manuf;hb=HEAD上的WireShark的HTML文件中提取数据。

到目前为止，我已经能够以字符串形式下载页面并搜索字符串以确认是否在字符串中找到“mac”。

我想让它搜索一个MAC地址，并输出MAC出现的整行。

例如，如果我搜索00-00-00-00-00-00，我希望能够提取整行，“00:00:00 Xerox Xerox Corporation”

这就是我所拥有的：

Private Sub btn_search_Click(sender As Object, e As EventArgs) Handles btn_search.Click
    Dim mac As String = txt_MAC.Text.ToUpper
    Dim pattern As Regex = New Regex("^([0-9A-F]{2}[:-]){5}([0-9A-F]{2})$")
    Dim match As Match = pattern.Match(mac)

    If match.Success Then
        mac = mac.Replace("-", ":")
        mac = mac.Substring(0, mac.Length - 9)

        Dim wc As New Net.WebClient
        Dim html As String = wc.DownloadString("https://code.wireshark.org/review/gitweb?p=wireshark.git;a=blob_plain;f=manuf;hb=HEAD")
        Dim macIndex = html.IndexOf(mac) 'returns line number in string

        MsgBox("Valid MAC: " & mac)

        If html.Contains(mac) Then
            'Display MAC + Vendor. IE.... 0:00:01   Xerox   Xerox Corporation'
            ' Is there a way to read only the specified line number in the string?
        End If

    Else
        MsgBox("You must enter a valid MAC")
    End If
End Sub

非常感谢任何帮助。

Answer 1

虽然有点草率，但我可以使用以下代码执行此操作：

        Dim wc As New Net.WebClient
        Dim html As String = wc.DownloadString("https://code.wireshark.org/review/gitweb?p=wireshark.git;a=blob_plain;f=manuf;hb=HEAD")
        Dim macIndex = html.IndexOf(mac)

        If html.Contains(mac) Then
            txt_result.Text = "Searching... "
            txt_result.Text = html.Chars(macIndex) & html.Chars(macIndex + 1) & html.Chars(macIndex + 2) & html.Chars(macIndex + 3) & html.Chars(macIndex + 4) & html.Chars(macIndex + 5) & html.Chars(macIndex + 6) & html.Chars(macIndex + 7) & html.Chars(macIndex + 8) & html.Chars(macIndex + 9) & html.Chars(macIndex + 10)

谢谢！