(25-12-20, 03:04 PM)alfaiz678 كتب :(25-12-20, 02:07 PM)MaxXx كتب : up up up up
اظن هذه ستفي بالغرض
كود :
Public Function ExtractLinks(ByVal url As String) As DataTable
Dim dt As New DataTable
dt.Columns.Add("LinkText")
dt.Columns.Add("LinkUrl")
Dim wc As New WebClient
Dim html As String = wc.DownloadString(url)
Dim links As MatchCollection = Regex.Matches(html, "<a.*?href=""(.*?)"".*?>(.*?)</a>")
For Each match As Match In links
Dim dr As DataRow = dt.NewRow
Dim matchUrl As String = match.Groups(1).Value
'Ignore all anchor links
If matchUrl.StartsWith("#") Then
Continue For
End If
'Ignore all javascript calls
If matchUrl.ToLower.StartsWith("javascript:") Then
Continue For
End If
'Ignore all email links
If matchUrl.ToLower.StartsWith("mailto:") Then
Continue For
End If
'For internal links, build the url mapped to the base address
If Not matchUrl.StartsWith("http://") And Not matchUrl.StartsWith("https://") Then
matchUrl = MapUrl(url, matchUrl)
End If
'Add the link data to datatable
dr("LinkUrl") = matchUrl
dr("LinkText") = match.Groups(2).Value
dt.Rows.Add(dr)
Next
Return dt
End Function
Public Function MapUrl(ByVal baseAddress As String, ByVal relativePath As String) As String
Dim u As New System.Uri(baseAddress)
If relativePath = "./" Then
relativePath = "/"
End If
If relativePath.StartsWith("/") Then
Return u.Scheme + Uri.SchemeDelimiter + u.Authority + relativePath
Else
Dim pathAndQuery As String = u.AbsolutePath
' If the baseAddress contains a file name, like ..../Something.aspx
' Trim off the file name
pathAndQuery = pathAndQuery.Split("?")(0).TrimEnd("/")
If pathAndQuery.Split("/")(pathAndQuery.Split("/").Count - 1).Contains(".") Then
pathAndQuery = pathAndQuery.Substring(0, pathAndQuery.LastIndexOf("/"))
End If
baseAddress = u.Scheme + Uri.SchemeDelimiter + u.Authority + pathAndQuery
'If the relativePath contains ../ then
' adjust the baseAddress accordingly
While relativePath.StartsWith("../")
relativePath = relativePath.Substring(3)
If baseAddress.LastIndexOf("/") > baseAddress.IndexOf("//" + 2) Then
baseAddress = baseAddress.Substring(0, baseAddress.LastIndexOf("/")).TrimEnd("/")
End If
End While
Return baseAddress + "/" + relativePath
End If
End Function
شكرا لك ولكني لم استطع استخدامه انت اعطيتني function فقط كيف استعمله هل ممكن ولو مشروع بسيط اخي من فضلك
واللي فهمته من الكود انه يقوم باستخراج جميع الروابط انا اريد استخراج رابط واحد فقط
لقد وجدت هذا الموضوع http://vb4arb.com/vb/showthread.php?tid=36742
ولكني للاسف لم استطع تطبيقه انا اريد مثل هذه الفكرة
هل بالامكان ذلك
