正则问题，请指教！
本帖最后由 Aspclass 于 2013-12-23 18:21:11 编辑 http://www.scflcp.com/trend/analysekl12.do?operator=history&pageCount=10

这个网址，我弄了好久了，都弄不出来，请大侠些帮个忙。

我要列表里面的，期号和开奖号码，这两样就可以了。

我的匹配总是出错。

错误提示：限定符 {x,y} 前没有任何内容。

<td>2013(*.?)</td> <td>(*.?)</td>

模块：

    Function getHTMLCode(ByVal Url As String, ByVal Encoding As String) As String
        Try
            Dim wc As Net.WebClient = New Net.WebClient()
            wc.Credentials = Net.CredentialCache.DefaultCredentials
            wc.Headers.Set("User-Agent", "Microsoft Internet Explorer") '//增加的代码
            Dim resStream As IO.Stream = wc.OpenRead(Url)
            Dim sr As IO.StreamReader = New IO.StreamReader(resStream, System.Text.Encoding.GetEncoding(Encoding))
            Dim code As String = sr.ReadToEnd()
            resStream.Close()
            getHTMLCode = code
        Catch ex As Exception
            getHTMLCode = ""
        End Try
    End Function
    
    Public Function GetResult() As String
        Dim CurrURL As String
        Dim code As String = ""

        Dim myMatchCollection As MatchCollection
        Dim myMach As Match
        Dim str As String
        str = "<td>2013(*.?)</td>        <td>(*.?)</td>"
        Dim i As Integer = 0
        GetResult = ""

        CurrURL = "http://www.scflcp.com/trend/analysekl12.do?operator=history&pageCount=10"
        code = code & getHTMLCode(CurrURL, "gb2312")
        myMatchCollection = Regex.Matches(code, str)
        For Each myMach In myMatchCollection
            GetResult = myMach.Groups(1).ToString & "|" & myMach.Groups(2).ToString
        Next

    End Function

执行：

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
MsgBox(GetResult())
End Sub


请各位帮我看看、、、谢谢了。



VS版本，2010
[解决办法]
<td>2013(.*?)</td> <td>(.*?)</td>
你想要的是这样的吧
[解决办法]
<tr>\s*?<td>(?<id>\d+)\D+(?<ball>[^<]+)

取分组id和分组ball

for each m as Match in Regex.Matches(yourHtmlString,"<tr>\s*?<td>(?<id>\d+)\D+(?<ball>[^<]+)")
    m.Groups("id").Value'这个就是期号
    m.Groups("ball").Value'这个就是中奖号
next