VB.NET - Regular Expression to get all HREF's out of a String

This function will accept a string and return an arraylist of all the HREF's that were inside:

    ''' <summary>

    ''' Using regular expression to get HREF out of string

    '''

    ''' </summary>

    ''' <param name="inputString"></param>

    ''' <returns></returns>

    ''' <remarks></remarks>

    Public Shared Function GetHtmlTags(inputString As String) As ArrayList

        Dim m As Match

        Dim HRefPattern As String = "<img[^>]+src\\s*=\\s*['\""]([^'\""]+)['\""][^>]*>"

        Dim arrlist As New ArrayList

        Try

            'Using regular expression retrieve all HREFs from the datacontent string

            m = Regex.Match(inputString, HRefPattern, RegexOptions.IgnoreCase Or RegexOptions.Compiled)

            Do While m.Success

                'check to see if the link already exists in the arraylist before adding it again

                If arrlist.Contains(m.Groups(1).ToString()) = False Then

                    arrlist.Add(m.Groups(1).ToString())

                End If

                m = m.NextMatch()

            Loop

            Return arrlist

        Catch ex As Exception

            Throw ex

        End Try

    End Function