unhandled SecurityException in Visual Basic 2005 Express

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  • KenEisman
    #1

    unhandled SecurityException in Visual Basic 2005 Express

    I'm trying to read in a text file using code that I copied and pasted from
    the MS help file.

    Using Reader As New _
    Microsoft.Visua lBasic.FileIO.T extFieldParser( "c:\bankche ck")

    At this line I get "Request for the permission of type
    'System.Securit y.Permissions.F ileIOPermission , mscorlib, Version=2.0.0.0 ,
    Culture=neutral , PublicKeyToken= b77a5c561934e08 9' failed."

    I've tried researching this in the help files and on the web but, I must
    confess, that what I've found has only confused me more.

    The file DOES exist and I have full permissions to it. What am I doing wrong
    and how can I fix it?

    Thanks for you help.
    Ken

    Tags: None
    • Cor Ligthert [MVP]
      #2
      Re: unhandled SecurityExcepti on in Visual Basic 2005 Express

      Ken,

      I tried your command and cannot get any error. Your file description looks
      strange to me, are you sure it exist and is a text file?

      Cor

      "KenEisman" <KenEisman@disc ussions.microso ft.comschreef in bericht
      news:23CD5082-BCD9-48E1-8D5A-62EC3AB051F8@mi crosoft.com...
      I'm trying to read in a text file using code that I copied and pasted from
      the MS help file.
      >
      Using Reader As New _
      Microsoft.Visua lBasic.FileIO.T extFieldParser( "c:\bankche ck")
      >
      At this line I get "Request for the permission of type
      'System.Securit y.Permissions.F ileIOPermission , mscorlib, Version=2.0.0.0 ,
      Culture=neutral , PublicKeyToken= b77a5c561934e08 9' failed."
      >
      I've tried researching this in the help files and on the web but, I must
      confess, that what I've found has only confused me more.
      >
      The file DOES exist and I have full permissions to it. What am I doing
      wrong
      and how can I fix it?
      >
      Thanks for you help.
      Ken
      >

        Comment

        • Phill W.
          #3
          Re: unhandled SecurityExcepti on in Visual Basic 2005 Express

          KenEisman wrote:
          At this line I get "Request for the permission of type
          'System.Securit y.Permissions.F ileIOPermission , mscorlib, Version=2.0.0.0 ,
          Culture=neutral , PublicKeyToken= b77a5c561934e08 9' failed."
          The file DOES exist and I have full permissions to it.
          /You/ might have, but your /code/ doesn't.
          Code Access Security, part of the .Net Framework, does away with all
          that "you have to run it under this account for it to work" nonsense.
          Every program runs in a security "sandbox" (although the "LocalZone" one
          is /pretty/ big!).

          Are you running this code from a network file share? Something like

          \\server\share\ ...\myprogram.e xe

          If so, your program runs in a /much/ smaller "sandbox" - by default, the
          Framework doesn't distinguish between your network share and
          www.DodgyAndDangerousSoftware.com (apologies to anyone who actually owns
          a site of this name!)

          Read up on the CASPOL (command line) utility or find the "Microsoft .Net
          Framework ?.? Configuration" program (GUI) in your PC's Administative
          Tools.

          HTH,
          Phill W.

            Comment

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