Parse Image tags in a HTML file : Regular Expressions « Development « VB.Net

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VB.Net » Development » Regular ExpressionsScreenshots 
Parse Image tags in a HTML file
  

Imports System.Collections

Public Class MainClass
    Public Function ParseImages(ByVal HTML As String) As ArrayList
        Dim objRegEx As System.Text.RegularExpressions.Regex
        Dim objMatch As System.Text.RegularExpressions.Match
        Dim arrLinks As New System.Collections.ArrayList()
        objRegEx = New System.Text.RegularExpressions.Regex( _
            "img.*src\s*=\s*(?:""(?<1>[^""]*)""|(?<1>\S+))", _
            System.Text.RegularExpressions.RegexOptions.IgnoreCase Or _
            System.Text.RegularExpressions.RegexOptions.Compiled)
        objMatch = objRegEx.Match(HTML)
        While objMatch.Success
            Dim strMatch As String
            strMatch = objMatch.Groups(1).ToString
            arrLinks.Add(strMatch)
            objMatch = objMatch.NextMatch()
        End While
        Return arrLinks
    End Function
End Class

   
    
  
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23.\w matches any word character.
24.(\w) matches a word character. This is the first capturing group.
25.\1 match the value of the first capture.
26.\s matches any white-space character.
27.\b: Begin the match at a word boundary.
28.\w+: Match one or more word characters.
29.(e)*: Match an "e" either zero or one time.
30.(\s|$) Match either a whitespace character or the end of the input string.
31.^: Begin the match at the beginning of the input string.
32.\D: Match a non-digit character.
33.\d{1,5} Matches from one to five decimal digits.
34.\D* matches zero or one non-decimal character.
35.$ Matches the end of the input string.
36.\S matches any non-white-space character.
37.\b: Begin the match at a word boundary.
38.(\S+): matches one or more non-white-space characters. This is the first capturing group.
39.\s*: matches zero or one white-space character.
40.Regular expression for class and group
41.Decimal Digit Character: \d
42.Parse Link and Image tags in a HTML file
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