Strip tags from HTML to create Text version of a web page : Regular Expressions « Development « VB.Net






  1. VB.Net
  2. Development
  3. Regular Expressions

Strip tags from HTML to create Text version of a web page

     

Public Class MainClass
    Public Shared Sub Main()
        System.Console.WriteLine(StripTags(GetPageHTML("http://www.g.com/")))
    End Sub

    Public Shared Function StripTags(ByVal HTML As String) As String
        Return System.Text.RegularExpressions.Regex.Replace(HTML, "<[^>]*>", "")
    End Function

    Public Shared Function GetPageHTML(ByVal URL As String) As String
        Dim objWC As New System.Net.WebClient()
        Return New System.Text.UTF8Encoding().GetString(objWC.DownloadData(URL))
    End Function
End Class








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22.\w matches any word character.
23.(\w) matches a word character. This is the first capturing group.
24.\1 match the value of the first capture.
25.\s matches any white-space character.
26.\b: Begin the match at a word boundary.
27.\w+: Match one or more word characters.
28.(e)*: Match an "e" either zero or one time.
29.(\s|$) Match either a whitespace character or the end of the input string.
30.^: Begin the match at the beginning of the input string.
31.\D: Match a non-digit character.
32.\d{1,5} Matches from one to five decimal digits.
33.\D* matches zero or one non-decimal character.
34.$ Matches the end of the input string.
35.\S matches any non-white-space character.
36.\b: Begin the match at a word boundary.
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38.\s*: matches zero or one white-space character.
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48.Capture Class represents the results from a single successful subexpression capture.
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