Help trimming off filename from path

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  • PvtPile
    #1

    Help trimming off filename from path

    I've got a form where i need to pull both the directory of a filename
    and the directory with the filename of an .inf file... I figured the
    easiest way to do this was to have an <input id=test type=file
    runat=server> control for the user to find the .inf file, and then make
    vb cut off the filename upon submission of the form. I just can't
    figure out how to trim off the filename leaving just the directory it's
    located in.


    just as a test i'm trying to display the content as follows

    Label1.Text = formINFLocation .Value.Trim(for mDriverINF.File Name)

    I did this hoping to dynamically trim off any inf filename that is
    chosen... though it seems that the Trim function does not work the way
    i was assuming it did. Is there another way to remove the filename from
    this location? I have a hunch it's far more complicated than my simple
    idea here. :D

    Tags: None
    • Herfried K. Wagner [MVP]
      #2
      Re: Help trimming off filename from path

      "PvtPile" <derek.peldo@gm ail.com> schrieb:[color=blue]
      > I've got a form where i need to pull both the directory of a filename
      > and the directory with the filename of an .inf file... I figured the
      > easiest way to do this was to have an <input id=test type=file
      > runat=server> control for the user to find the .inf file, and then make
      > vb cut off the filename upon submission of the form. I just can't
      > figure out how to trim off the filename leaving just the directory it's
      > located in.[/color]

      Check out the 'System.IO.Path ' class and its shared methods.

      --
      M S Herfried K. Wagner
      M V P <URL:http://dotnet.mvps.org/>
      V B <URL:http://classicvb.org/petition/>

        Comment

        • iwdu15
          #3
          RE: Help trimming off filename from path

          try something along the lines of this:

          UNTESTED

          Label1.Text = strPath.Substri ng(0, strPath.LastInd exOf("\"))

          that should give you the directory with the last \

          ex:

          C:\SomeFolder\A notherFolder\

          --
          -iwdu15

            Comment

            • Mythran
              #4
              Re: Help trimming off filename from path


              "Herfried K. Wagner [MVP]" <hirf-spam-me-here@gmx.at> wrote in message
              news:%23ZDAERjb GHA.4932@TK2MSF TNGP03.phx.gbl. ..[color=blue]
              > "PvtPile" <derek.peldo@gm ail.com> schrieb:[color=green]
              >> I've got a form where i need to pull both the directory of a filename
              >> and the directory with the filename of an .inf file... I figured the
              >> easiest way to do this was to have an <input id=test type=file
              >> runat=server> control for the user to find the .inf file, and then make
              >> vb cut off the filename upon submission of the form. I just can't
              >> figure out how to trim off the filename leaving just the directory it's
              >> located in.[/color]
              >
              > Check out the 'System.IO.Path ' class and its shared methods.
              >
              > --
              > M S Herfried K. Wagner
              > M V P <URL:http://dotnet.mvps.org/>
              > V B <URL:http://classicvb.org/petition/>[/color]

              Yeah, System.IO.Path. GetDirectoryNam e gets the directory path you want :)

              So...

              Dim dirName As String = System.IO.Path. GetDirectoryNam e(...)

              :)

              HTH,
              Mythran

                Comment

                • Herfried K. Wagner [MVP]
                  #5
                  Re: Help trimming off filename from path

                  "iwdu15" <jmmgoalsteraty ahoodotcom> schrieb:[color=blue]
                  > Label1.Text = strPath.Substri ng(0, strPath.LastInd exOf("\"))
                  >
                  > that should give you the directory with the last \
                  >
                  > ex:
                  >
                  > C:\SomeFolder\A notherFolder\[/color]

                  Directory paths in Windows typically do not include a trailing backslash.
                  In addition, note that not all systems necessarily use "\" as path separator
                  character and thus your code won't work on these systems.

                  --
                  M S Herfried K. Wagner
                  M V P <URL:http://dotnet.mvps.org/>
                  V B <URL:http://classicvb.org/petition/>

                    Comment

                    • PvtPile
                      #6
                      Re: Help trimming off filename from path

                      Thanks iwdu15

                      That worked great!

                      I hate it when people just say "It worked, thanks." without showing us
                      the results... so here it is.

                      Dim pathname As String = FileUpload.Valu e
                      Label1.Text = (FileUpload.Val ue.Substring(0,
                      FileUpload.Valu e.LastIndexOf(" \")))

                      Again, thanks for all the help on this topic!

                        Comment

                        • iwdu15
                          #7
                          Re: Help trimming off filename from path

                          thats a good point...my code would only work on the systems that use the \
                          path separator, thanks for the correction
                          --
                          -iwdu15

                            Comment

                            • iwdu15
                              #8
                              Re: Help trimming off filename from path

                              glad i could help, just make sure you check Herfried's post above about your
                              solution
                              --
                              -iwdu15

                                Comment

                                • PvtPile
                                  #9
                                  Re: Help trimming off filename from path

                                  Indeed valid. The reason, howerver, is that i need this input is so
                                  that i can use it in a shell command at a later date. The format that
                                  was extracted was exactly what was needed. The directory will be used
                                  to reference a file on an nt machine only. Great work guys... you guys
                                  are too smart!

                                    Comment

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