String parameter dll function

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  • Wyz
    #1

    String parameter dll function

    Hello.
    I have troubles giving me a big headache, I hope somebody may help me.
    I'm using Indy.Sockets to have FTP support for my VB.NET application (I also
    tried with another dll made in C# but the trouble is the same).
    The idea is that I added a dll as a reference to my project. There is a FTP
    object which have the method put (path as string, name as string, append as
    boolean).
    Here is the trouble now and I saw a lot of articles on it but it didn't make
    it clearer. When giving strings containing accentuated characters (eg. 'é')
    to the string arguments, the accentuated characters are replaced by a '?'
    causing the ftp upload to file (for example calling "ftp.put
    ("éééé","é ",false) throws the ftp command "STOR ?".
    What's the matter and how to solve it ? (maybe I have to convert my string
    in an other type of sting but I can't figure out).
    Best regards.

    Tags: None
    • GhostInAK
      #2
      Re: String parameter dll function

      Hello Wyz,

      é is a unicode character. Both the FTP library and the FTP server/OS must
      understand unicode.
      Unicode is a 2-byte character set.. so if either the Library and/or the server
      only understand 1-byte character sets it'll interpret each byte of the 2-byte
      character set as an individual character.. thus your problem.

      Enjoy,
      -Boo
      [color=blue]
      > Hello.
      > I have troubles giving me a big headache, I hope somebody may help me.
      > I'm using Indy.Sockets to have FTP support for my VB.NET application
      > (I also
      > tried with another dll made in C# but the trouble is the same).
      > The idea is that I added a dll as a reference to my project. There is
      > a FTP
      > object which have the method put (path as string, name as string,
      > append as
      > boolean).
      > Here is the trouble now and I saw a lot of articles on it but it
      > didn't make
      > it clearer. When giving strings containing accentuated characters (eg.
      > 'é')
      > to the string arguments, the accentuated characters are replaced by a
      > '?'
      > causing the ftp upload to file (for example calling "ftp.put
      > ("éééé","é",fal se) throws the ftp command "STOR ?".
      > What's the matter and how to solve it ? (maybe I have to convert my
      > string
      > in an other type of sting but I can't figure out).
      > Best regards.[/color]


        Comment

        • Wyz
          #3
          Re: String parameter dll function

          Hello.
          The FTP Server accepts them, I tested it.
          What I don't understand is that how it can be loose from my vb to the dll
          method and how to solve it...
          Sincerly.

          "GhostInAK" wrote:
          [color=blue]
          > Hello Wyz,
          >
          > é is a unicode character. Both the FTP library and the FTP server/OS must
          > understand unicode.
          > Unicode is a 2-byte character set.. so if either the Library and/or the server
          > only understand 1-byte character sets it'll interpret each byte of the 2-byte
          > character set as an individual character.. thus your problem.
          >
          > Enjoy,
          > -Boo
          >[color=green]
          > > Hello.
          > > I have troubles giving me a big headache, I hope somebody may help me.
          > > I'm using Indy.Sockets to have FTP support for my VB.NET application
          > > (I also
          > > tried with another dll made in C# but the trouble is the same).
          > > The idea is that I added a dll as a reference to my project. There is
          > > a FTP
          > > object which have the method put (path as string, name as string,
          > > append as
          > > boolean).
          > > Here is the trouble now and I saw a lot of articles on it but it
          > > didn't make
          > > it clearer. When giving strings containing accentuated characters (eg.
          > > 'é')
          > > to the string arguments, the accentuated characters are replaced by a
          > > '?'
          > > causing the ftp upload to file (for example calling "ftp.put
          > > ("éééé","é ",false) throws the ftp command "STOR ?".
          > > What's the matter and how to solve it ? (maybe I have to convert my
          > > string
          > > in an other type of sting but I can't figure out).
          > > Best regards.[/color]
          >
          >
          >[/color]

            Comment

            • Wyz
              #4
              Re: String parameter dll function

              Ok.
              We found it. The lot of FTP clients are getting a char buffer from which
              they get the ascii chars.
              My troubles are coming from here as "é" is not in ASCII encoding.
              I finally found a C# DLL on which I can update the source code and I
              replaced ASCII by the default encoding of the system.
              Best regards.

                Comment

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