System.ObjectDisposedException

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  • Martin Pöpping
    #1

    System.ObjectDisposedException

    Hello,

    I´ve a problem with a small line of code.
    For my Windows Application I designed a form for exporting data into xml
    files.

    I´m opening the dialog with:

    ExportDialog export = new ExportDialog();
    export.Show();

    and I´m getting the following exception:

    System.ObjectDi sposedException was unhandled
    Message="Cannot access a disposed object.\r\nObje ct name:
    'ExportDialog'. "
    Source="System. Windows.Forms"
    ObjectName="Exp ortDialog"
    StackTrace:
    at System.Windows. Forms.Control.C reateHandle()
    at System.Windows. Forms.Form.Crea teHandle()
    at System.Windows. Forms.Control.g et_Handle()
    at System.Windows. Forms.Control.S etVisibleCore(B oolean value)
    at System.Windows. Forms.Form.SetV isibleCore(Bool ean value)
    at System.Windows. Forms.Control.S how()
    at [...]



    What do I do wrong?

    Another form, my import dialog works fine with the same lines of code:


    ImportDialog import = new ImportDialog();
    import.Show();



    Regards,

    Martin
    Tags: None
    • Tom Porterfield
      #2
      Re: System.ObjectDi sposedException

      On Sat, 28 Oct 2006 15:20:11 +0200, Martin Pöpping wrote:
      Hello,
      >
      I´ve a problem with a small line of code.
      For my Windows Application I designed a form for exporting data into xml
      files.
      >
      I´m opening the dialog with:
      >
      ExportDialog export = new ExportDialog();
      export.Show();
      >
      and I´m getting the following exception:
      >
      System.ObjectDi sposedException was unhandled
      Message="Cannot access a disposed object.\r\nObje ct name:
      'ExportDialog'. "
      Source="System. Windows.Forms"
      ObjectName="Exp ortDialog"
      StackTrace:
      at System.Windows. Forms.Control.C reateHandle()
      at System.Windows. Forms.Form.Crea teHandle()
      at System.Windows. Forms.Control.g et_Handle()
      at System.Windows. Forms.Control.S etVisibleCore(B oolean value)
      at System.Windows. Forms.Form.SetV isibleCore(Bool ean value)
      at System.Windows. Forms.Control.S how()
      at [...]
      >
      What do I do wrong?
      >
      Another form, my import dialog works fine with the same lines of code:
      >
      ImportDialog import = new ImportDialog();
      import.Show();
      Where in your form (what method or event) is the ExportDialog code?
      --
      Tom Porterfield

        Comment

        • Martin Pöpping
          #3
          Re: System.ObjectDi sposedException

          I just found the error.

          Because of a copy&paste mistake I had a this.close() in the
          Export class constructor. ;)


          Regards,
          Martin

            Comment

            • Tom Porterfield
              #4
              Re: System.ObjectDi sposedException

              On Sat, 28 Oct 2006 16:28:06 +0200, Martin Pöpping wrote:
              I just found the error.
              >
              Because of a copy&paste mistake I had a this.close() in the
              Export class constructor. ;)
              >
              Regards,
              Martin
              That would cause that type of problem.
              --
              Tom Porterfield

                Comment

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