RegEx and Vb.net /// "Unrecognized escape sequence"

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  • sloan
    #1

    RegEx and Vb.net /// "Unrecognized escape sequence"



    I have a fairly simple RegEx code below.

    I am given a file name, (which I don't control) , and need to change a
    folder name in it.



    The code below is choking on the filename not being escaped.

    "Unrecogniz ed escape sequence"

    While I can escape the findValue and replaceValue,
    I don't necessarily control the fileName value. Aka, all I can do is
    manually string.Replace the fileName value. (Unless someone knows better
    than I)

    Do I have to do a string.Replace here? ( to make all the \ into \\ )

    Or am I missing some trick in vb.net.



    ----------Start VB.Net code



    Dim fileName As String

    fileName = "C:\wutemp\myfi le.txt" '<< this is given to me, I cannot simply
    say " filename = "C:\\wutemp\\my file.txt" "

    Dim replaceRegEx As System.Text.Reg ularExpressions .Regex = New
    System.Text.Reg ularExpressions .Regex(fileName , getRegexOptions ())

    Dim findValue As String = "\wutemp\"

    Dim replaceValue As String = "\newfolder \"

    Dim newFileName As String = replaceRegEx.Re place(fileName, findValue,
    replaceValue)







    Private Function GetRegexOptions () As RegexOptions



    Dim options As RegexOptions = New RegexOptions

    options = options Or RegexOptions.Ig noreCase

    Return options

    End Function


    Tags: None
    • sloan
      #2
      Re: RegEx and Vb.net /// &quot;Unrecogni zed escape sequence&quot;


      PS

      Even when I write code that doesn't "break it", I get a value like

      newFileName
      "C:\\\newfolder \\\myfile.txt"

      Which isn't what I want of course.


      ..........




      "sloan" <sloan@ipass.ne twrote in message
      news:OYhfTCIcHH A.2552@TK2MSFTN GP06.phx.gbl...
      >
      >
      I have a fairly simple RegEx code below.
      >
      I am given a file name, (which I don't control) , and need to change a
      folder name in it.
      >
      >
      >
      The code below is choking on the filename not being escaped.
      >
      "Unrecogniz ed escape sequence"
      >
      While I can escape the findValue and replaceValue,
      I don't necessarily control the fileName value. Aka, all I can do is
      manually string.Replace the fileName value. (Unless someone knows better
      than I)
      >
      Do I have to do a string.Replace here? ( to make all the \ into \\ )
      >
      Or am I missing some trick in vb.net.
      >
      >
      >
      ----------Start VB.Net code
      >
      >
      >
      Dim fileName As String
      >
      fileName = "C:\wutemp\myfi le.txt" '<< this is given to me, I cannot
      simply
      say " filename = "C:\\wutemp\\my file.txt" "
      >
      Dim replaceRegEx As System.Text.Reg ularExpressions .Regex = New
      System.Text.Reg ularExpressions .Regex(fileName , getRegexOptions ())
      >
      Dim findValue As String = "\wutemp\"
      >
      Dim replaceValue As String = "\newfolder \"
      >
      Dim newFileName As String = replaceRegEx.Re place(fileName, findValue,
      replaceValue)
      >
      >
      >
      >
      >
      >
      >
      Private Function GetRegexOptions () As RegexOptions
      >
      >
      >
      Dim options As RegexOptions = New RegexOptions
      >
      options = options Or RegexOptions.Ig noreCase
      >
      Return options
      >
      End Function
      >
      >

        Comment

        • sloan
          #3
          Re: RegEx and Vb.net /// &quot;Unrecogni zed escape sequence&quot;


          I'm moving this post to:
          microsoft.publi c.dotnet.framew ork.aspnet

          Please IGNORE this post/thread and reply there.





          "sloan" <sloan@ipass.ne twrote in message
          news:OwH2QGIcHH A.2120@TK2MSFTN GP03.phx.gbl...
          >
          PS
          >
          Even when I write code that doesn't "break it", I get a value like
          >
          newFileName
          "C:\\\newfolder \\\myfile.txt"
          >
          Which isn't what I want of course.
          >
          >
          .........
          >
          >
          >
          >
          "sloan" <sloan@ipass.ne twrote in message
          news:OYhfTCIcHH A.2552@TK2MSFTN GP06.phx.gbl...


          I have a fairly simple RegEx code below.

          I am given a file name, (which I don't control) , and need to change a
          folder name in it.



          The code below is choking on the filename not being escaped.

          "Unrecogniz ed escape sequence"

          While I can escape the findValue and replaceValue,
          I don't necessarily control the fileName value. Aka, all I can do is
          manually string.Replace the fileName value. (Unless someone knows
          better
          than I)

          Do I have to do a string.Replace here? ( to make all the \ into \\ )

          Or am I missing some trick in vb.net.



          ----------Start VB.Net code



          Dim fileName As String

          fileName = "C:\wutemp\myfi le.txt" '<< this is given to me, I cannot
          simply
          say " filename = "C:\\wutemp\\my file.txt" "

          Dim replaceRegEx As System.Text.Reg ularExpressions .Regex = New
          System.Text.Reg ularExpressions .Regex(fileName , getRegexOptions ())

          Dim findValue As String = "\wutemp\"

          Dim replaceValue As String = "\newfolder \"

          Dim newFileName As String = replaceRegEx.Re place(fileName, findValue,
          replaceValue)







          Private Function GetRegexOptions () As RegexOptions



          Dim options As RegexOptions = New RegexOptions

          options = options Or RegexOptions.Ig noreCase

          Return options

          End Function
          >
          >

            Comment

            • Chris Dunaway
              #4
              Re: RegEx and Vb.net /// &quot;Unrecogni zed escape sequence&quot;

              On Mar 27, 10:06 am, "sloan" <s...@ipass.net wrote:
              PS
              >
              Even when I write code that doesn't "break it", I get a value like
              >
              newFileName
              "C:\\\newfolder \\\myfile.txt"
              >
              Which isn't what I want of course.
              >
              .........
              >
              "sloan" <s...@ipass.net wrote in message
              >
              news:OYhfTCIcHH A.2552@TK2MSFTN GP06.phx.gbl...
              >
              >
              >
              I have a fairly simple RegEx code below.
              >
              I am given a file name, (which I don't control) , and need to change a
              folder name in it.
              >
              The code below is choking on the filename not being escaped.
              >
              "Unrecogniz ed escape sequence"
              >
              While I can escape the findValue and replaceValue,
              I don't necessarily control the fileName value. Aka, all I can do is
              manually string.Replace the fileName value. (Unless someone knows better
              than I)
              >
              Do I have to do a string.Replace here? ( to make all the \ into \\ )
              >
              Or am I missing some trick in vb.net.
              >
              ----------Start VB.Net code
              >
              Dim fileName As String
              >
              fileName = "C:\wutemp\myfi le.txt" '<< this is given to me, I cannot
              simply
              say " filename = "C:\\wutemp\\my file.txt" "
              >
              Dim replaceRegEx As System.Text.Reg ularExpressions .Regex = New
              System.Text.Reg ularExpressions .Regex(fileName , getRegexOptions ())
              >
              Dim findValue As String = "\wutemp\"
              >
              Dim replaceValue As String = "\newfolder \"
              >
              Dim newFileName As String = replaceRegEx.Re place(fileName, findValue,
              replaceValue)
              >
              Private Function GetRegexOptions () As RegexOptions
              >
              Dim options As RegexOptions = New RegexOptions
              >
              options = options Or RegexOptions.Ig noreCase
              >
              Return options
              >
              End Function
              I'm not sure why you're using double slashes in your path names as
              VB.Net does not use the \ character as an escape character in strings.

              Why not use the classes in the System.IO namespace?

              Dim filename As String = "c:\wutemp\myfi le.txt"
              Dim replaceValue As String = "c:\newFold er"
              Dim newFilename As String = Path.Combine(re placeValue,
              Path.GetFileNam e(filename))

              Chris


                Comment

                • sloan
                  #5
                  Re: RegEx and Vb.net /// &quot;Unrecogni zed escape sequence&quot;


                  Man , I can't think straight today.

                  I meant to say it will be moved to:

                  microsoft.publi c.dotnet.framew ork











                  string t6 =
                  @"C:\Documen ts and Settings\user1\ Desktop\";
                  string r6 = Regex.Replace(t 6,
                  @"\\user1\\" ,
                  @"\\user2\\" );



                  "sloan" <sloan@ipass.ne twrote in message
                  news:%2388xCpIc HHA.1296@TK2MSF TNGP02.phx.gbl. ..
                  >
                  I'm moving this post to:
                  microsoft.publi c.dotnet.framew ork.aspnet
                  >
                  Please IGNORE this post/thread and reply there.
                  >
                  >
                  >
                  >
                  >
                  "sloan" <sloan@ipass.ne twrote in message
                  news:OwH2QGIcHH A.2120@TK2MSFTN GP03.phx.gbl...

                  PS

                  Even when I write code that doesn't "break it", I get a value like

                  newFileName
                  "C:\\\newfolder \\\myfile.txt"

                  Which isn't what I want of course.


                  .........




                  "sloan" <sloan@ipass.ne twrote in message
                  news:OYhfTCIcHH A.2552@TK2MSFTN GP06.phx.gbl...
                  >
                  >
                  I have a fairly simple RegEx code below.
                  >
                  I am given a file name, (which I don't control) , and need to change a
                  folder name in it.
                  >
                  >
                  >
                  The code below is choking on the filename not being escaped.
                  >
                  "Unrecogniz ed escape sequence"
                  >
                  While I can escape the findValue and replaceValue,
                  I don't necessarily control the fileName value. Aka, all I can do is
                  manually string.Replace the fileName value. (Unless someone knows
                  better
                  than I)
                  >
                  Do I have to do a string.Replace here? ( to make all the \ into \\ )
                  >
                  Or am I missing some trick in vb.net.
                  >
                  >
                  >
                  ----------Start VB.Net code
                  >
                  >
                  >
                  Dim fileName As String
                  >
                  fileName = "C:\wutemp\myfi le.txt" '<< this is given to me, I cannot
                  simply
                  say " filename = "C:\\wutemp\\my file.txt" "
                  >
                  Dim replaceRegEx As System.Text.Reg ularExpressions .Regex = New
                  System.Text.Reg ularExpressions .Regex(fileName , getRegexOptions ())
                  >
                  Dim findValue As String = "\wutemp\"
                  >
                  Dim replaceValue As String = "\newfolder \"
                  >
                  Dim newFileName As String = replaceRegEx.Re place(fileName, findValue,
                  replaceValue)
                  >
                  >
                  >
                  >
                  >
                  >
                  >
                  Private Function GetRegexOptions () As RegexOptions
                  >
                  >
                  >
                  Dim options As RegexOptions = New RegexOptions
                  >
                  options = options Or RegexOptions.Ig noreCase
                  >
                  Return options
                  >
                  End Function
                  >
                  >
                  >
                  >

                    Comment

                    • Newbie Coder
                      #6
                      Re: RegEx and Vb.net /// &quot;Unrecogni zed escape sequence&quot;

                      Sloan,

                      Why cant you just do String.Replace( "\\", "\")?

                      --
                      Newbie Coder
                      (It's just a name)


                      "sloan" <sloan@ipass.ne twrote in message
                      news:OYhfTCIcHH A.2552@TK2MSFTN GP06.phx.gbl...
                      >
                      >
                      I have a fairly simple RegEx code below.
                      >
                      I am given a file name, (which I don't control) , and need to change a
                      folder name in it.
                      >
                      >
                      >
                      The code below is choking on the filename not being escaped.
                      >
                      "Unrecogniz ed escape sequence"
                      >
                      While I can escape the findValue and replaceValue,
                      I don't necessarily control the fileName value. Aka, all I can do is
                      manually string.Replace the fileName value. (Unless someone knows better
                      than I)
                      >
                      Do I have to do a string.Replace here? ( to make all the \ into \\ )
                      >
                      Or am I missing some trick in vb.net.
                      >
                      >
                      >
                      ----------Start VB.Net code
                      >
                      >
                      >
                      Dim fileName As String
                      >
                      fileName = "C:\wutemp\myfi le.txt" '<< this is given to me, I cannot
                      simply
                      say " filename = "C:\\wutemp\\my file.txt" "
                      >
                      Dim replaceRegEx As System.Text.Reg ularExpressions .Regex = New
                      System.Text.Reg ularExpressions .Regex(fileName , getRegexOptions ())
                      >
                      Dim findValue As String = "\wutemp\"
                      >
                      Dim replaceValue As String = "\newfolder \"
                      >
                      Dim newFileName As String = replaceRegEx.Re place(fileName, findValue,
                      replaceValue)
                      >
                      >
                      >
                      >
                      >
                      >
                      >
                      Private Function GetRegexOptions () As RegexOptions
                      >
                      >
                      >
                      Dim options As RegexOptions = New RegexOptions
                      >
                      options = options Or RegexOptions.Ig noreCase
                      >
                      Return options
                      >
                      End Function
                      >
                      >

                        Comment

                        • sloan
                          #7
                          Re: RegEx and Vb.net /// &quot;Unrecogni zed escape sequence&quot;




                          I'm moving this post to:
                          microsoft.publi c.dotnet.framew ork

                          Please IGNORE this post/thread and reply there.





                          "Newbie Coder" <newbiecoder@sp ammeplease.comw rote in message
                          news:eloSFzIcHH A.1300@TK2MSFTN GP02.phx.gbl...
                          Sloan,
                          >
                          Why cant you just do String.Replace( "\\", "\")?
                          >
                          --
                          Newbie Coder
                          (It's just a name)
                          >
                          >
                          "sloan" <sloan@ipass.ne twrote in message
                          news:OYhfTCIcHH A.2552@TK2MSFTN GP06.phx.gbl...


                          I have a fairly simple RegEx code below.

                          I am given a file name, (which I don't control) , and need to change a
                          folder name in it.



                          The code below is choking on the filename not being escaped.

                          "Unrecogniz ed escape sequence"

                          While I can escape the findValue and replaceValue,
                          I don't necessarily control the fileName value. Aka, all I can do is
                          manually string.Replace the fileName value. (Unless someone knows
                          better
                          than I)

                          Do I have to do a string.Replace here? ( to make all the \ into \\ )

                          Or am I missing some trick in vb.net.



                          ----------Start VB.Net code



                          Dim fileName As String

                          fileName = "C:\wutemp\myfi le.txt" '<< this is given to me, I cannot
                          simply
                          say " filename = "C:\\wutemp\\my file.txt" "

                          Dim replaceRegEx As System.Text.Reg ularExpressions .Regex = New
                          System.Text.Reg ularExpressions .Regex(fileName , getRegexOptions ())

                          Dim findValue As String = "\wutemp\"

                          Dim replaceValue As String = "\newfolder \"

                          Dim newFileName As String = replaceRegEx.Re place(fileName, findValue,
                          replaceValue)







                          Private Function GetRegexOptions () As RegexOptions



                          Dim options As RegexOptions = New RegexOptions

                          options = options Or RegexOptions.Ig noreCase

                          Return options

                          End Function
                          >
                          >

                            Comment

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