Close and Open MDI

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  • Joachim
    #1

    Close and Open MDI

    1. I am sure there is a way to close the ChildForm from ParentForm

    Example
    I have several (song) albums. Each album has several songs
    So.... Album is my ParentForm and each song has each ChildForm (6 songs = 6 ChildForm)
    (Album = Directory, Song = file)
    When I change the album (to albumX), I will that all the ChildForms those belong to the Album, to be closed
    And then open all the Song/ChildForm of the new album (albumX)
    Can anybody tell me how to do it

    2. If I open a ChildForm that already opened, I want to show a message and Set the ChildForm Active
    How can I do this

    Thansk in advance for help

    Regards
    Joachim.
    Tags: None
    • Herfried K. Wagner [MVP]
      #2
      Re: Close and Open MDI

      * "=?Utf-8?B?Sm9hY2hpbQ= =?=" <anonymous@disc ussions.microso ft.com> scripsit:[color=blue]
      > 1. I am sure there is a way to close the ChildForm from ParentForm.
      >
      > Example :
      > I have several (song) albums. Each album has several songs.
      > So.... Album is my ParentForm and each song has each ChildForm (6 songs = 6 ChildForm).
      > (Album = Directory, Song = file).
      > When I change the album (to albumX), I will that all the ChildForms those belong to the Album, to be closed.
      > And then open all the Song/ChildForm of the new album (albumX).
      > Can anybody tell me how to do it ?[/color]

      Loop through the MDI parent's 'MdiChildren' collection and close all
      forms that belong to the album. It's likely that you will need to use
      the 'DirectCast' operator ;-).
      [color=blue]
      > 2. If I open a ChildForm that already opened, I want to show a message and Set the ChildForm Active.
      > How can I do this ?[/color]

      Call the MDI parent's 'ActivateMdiChi ld' method and pass a reference to
      the MDI child that should be activated to this method.

      --
      Herfried K. Wagner [MVP]
      <URL:http://dotnet.mvps.org/>

        Comment

        • Joachim
          #3
          Re: Close and Open MDI

          Thanks Herfried for your reply

          Sorry to tell you that I am a beginner in VB.NET, so I don't really know much
          Can you please explain it with a code sample

          How to loop the MDI parent's 'MdiChildren' collection
          How to close it ? With which statement, parameter
          'DirectCast' operator, what is this

          How to call the MDI parent's 'ActivateMdiChi ld' method
          And what reference should I pass ?

          Again. Sorry Herfried. I am a beginner
          So please give a code sample

          Thanks in advance

          Regards,

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