Treeview and click on + to expand node

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  • Marcolino
    #1

    Treeview and click on + to expand node

    Hi I have a little problem with Treeview expand.
    So I'll try to explain.

    I Have one node and some subnodes like this

    +Nodes1
    |------Subnodes 1
    |------Subnodes 2

    +Nodes2
    |------Subnodes 3
    |------Subnodes 3

    and so on....
    Well if Nodes2 is selected, and I'll click on + Nodes1,in the
    AfterExpand and AfterCollapse event I'll got handle for Nodes2 (the
    selected one) and not for the clicked one on + to expand.
    I need to get the handle for node wich i clicked + and no the selected
    one.
    Is there a way to do what I need?

    Many Thanks
    Tags: None
    • kimiraikkonen
      #2
      Re: Treeview and click on + to expand node

      On May 15, 12:17 am, Marcolino <marco.pozzu... @gmail.comwrote :
      Hi I have a little problem with Treeview expand.
      So I'll try to explain.
      >
      I Have one node and some subnodes like this
      >
      +Nodes1
      |------Subnodes 1
      |------Subnodes 2
      >
      +Nodes2
      |------Subnodes 3
      |------Subnodes 3
      >
      and so on....
      Well if Nodes2 is selected, and I'll click on + Nodes1,in the
      AfterExpand and AfterCollapse event I'll got handle for Nodes2 (the
      selected one) and not for the clicked one on + to expand.
      I need to get the handle for node wich i clicked + and no the selected
      one.
      Is there a way to do what I need?
      >
      Many Thanks
      Marcolino,
      I tried to understand your issue and i hope adding these 2 events will
      do what you want:

      ' Select node that's expanded
      Private Sub TreeView1_After Expand(ByVal sender As System.Object, ByVal
      e As System.Windows. Forms.TreeViewE ventArgs) Handles
      TreeView1.After Expand
      TreeView1.Selec tedNode = e.Node
      End Sub

      ' Select node that's collapsed
      Private Sub TreeView1_After Collapse(ByVal sender As System.Object,
      ByVal e As System.Windows. Forms.TreeViewE ventArgs) Handles
      TreeView1.After Collapse
      TreeView1.Selec tedNode = e.Node
      End Sub

      and TreeView1 is your TreeView control of course.

      Hope this helps,

      Onur Güzel

        Comment

        • Armin Zingler
          #3
          Re: Treeview and click on + to expand node

          "Marcolino" <marco.pozzuolo @gmail.comschri eb
          Hi I have a little problem with Treeview expand.
          So I'll try to explain.
          >
          I Have one node and some subnodes like this
          >
          +Nodes1
          |------Subnodes 1
          |------Subnodes 2
          >
          +Nodes2
          |------Subnodes 3
          |------Subnodes 3
          >
          and so on....
          Well if Nodes2 is selected, and I'll click on + Nodes1,in the
          AfterExpand and AfterCollapse event I'll got handle for Nodes2 (the
          selected one) and not for the clicked one on + to expand.
          I need to get the handle for node wich i clicked + and no the
          selected one.
          Is there a way to do what I need?

          Works for me. I always get the expanded/collapsed node. How do you
          identify the node? It's in e.Node (e being one argument of the event
          handler).


          Armin

            Comment

            • Marcolino
              #4
              Re: Treeview and click on + to expand node

              On 14 Mag, 23:54, kimiraikkonen <kimiraikkone.. .@gmail.comwrot e:
              On May 15, 12:17 am, Marcolino <marco.pozzu... @gmail.comwrote :
              >
              >
              >
              >
              >
              Hi I have a little problem with Treeview expand.
              So I'll try to explain.
              >
              I Have one node and some subnodes  like this
              >
              +Nodes1
              |------Subnodes 1
              |------Subnodes 2
              >
              +Nodes2
              |------Subnodes 3
              |------Subnodes 3
              >
              and so on....
              Well if Nodes2 is selected, and I'll click on + Nodes1,in the
              AfterExpand and AfterCollapse event I'll got handle for Nodes2 (the
              selected one) and not for the clicked one on + to expand.
              I need to get the handle for node wich i clicked + and no the selected
              one.
              Is there a way to do what I need?
              >
              Many Thanks
              >
              Marcolino,
              I tried to understand your issue and i hope adding these 2 events will
              do what you want:
              >
              ' Select node that's expanded
              Private Sub TreeView1_After Expand(ByVal sender As System.Object, ByVal
              e As System.Windows. Forms.TreeViewE ventArgs) Handles
              TreeView1.After Expand
              TreeView1.Selec tedNode = e.Node
              End Sub
              >
              ' Select node that's collapsed
              Private Sub TreeView1_After Collapse(ByVal sender As System.Object,
              ByVal e As System.Windows. Forms.TreeViewE ventArgs) Handles
              TreeView1.After Collapse
              TreeView1.Selec tedNode = e.Node
              End Sub
              >
              and TreeView1 is your TreeView control of course.
              >
              Hope this helps,
              >
              Onur Güzel- Nascondi testo tra virgolette -
              >
              - Mostra testo tra virgolette -
              Hi All.
              I solved. Thanks for your suggestions.

              --Marco

                Comment

                • kimiraikkonen
                  #5
                  Re: Treeview and click on + to expand node

                  On May 15, 2:18 am, Marcolino <marco.pozzu... @gmail.comwrote :
                  On 14 Mag, 23:54, kimiraikkonen <kimiraikkone.. .@gmail.comwrot e:
                  >
                  >
                  >
                  On May 15, 12:17 am, Marcolino <marco.pozzu... @gmail.comwrote :
                  >
                  Hi I have a little problem with Treeview expand.
                  So I'll try to explain.
                  >
                  I Have one node and some subnodes like this
                  >
                  +Nodes1
                  |------Subnodes 1
                  |------Subnodes 2
                  >
                  +Nodes2
                  |------Subnodes 3
                  |------Subnodes 3
                  >
                  and so on....
                  Well if Nodes2 is selected, and I'll click on + Nodes1,in the
                  AfterExpand and AfterCollapse event I'll got handle for Nodes2 (the
                  selected one) and not for the clicked one on + to expand.
                  I need to get the handle for node wich i clicked + and no the selected
                  one.
                  Is there a way to do what I need?
                  >
                  Many Thanks
                  >
                  Marcolino,
                  I tried to understand your issue and i hope adding these 2 events will
                  do what you want:
                  >
                  ' Select node that's expanded
                  Private Sub TreeView1_After Expand(ByVal sender As System.Object, ByVal
                  e As System.Windows. Forms.TreeViewE ventArgs) Handles
                  TreeView1.After Expand
                  TreeView1.Selec tedNode = e.Node
                  End Sub
                  >
                  ' Select node that's collapsed
                  Private Sub TreeView1_After Collapse(ByVal sender As System.Object,
                  ByVal e As System.Windows. Forms.TreeViewE ventArgs) Handles
                  TreeView1.After Collapse
                  TreeView1.Selec tedNode = e.Node
                  End Sub
                  >
                  and TreeView1 is your TreeView control of course.
                  >
                  Hope this helps,
                  >
                  Onur Güzel- Nascondi testo tra virgolette -
                  >
                  - Mostra testo tra virgolette -
                  >
                  Hi All.
                  I solved. Thanks for your suggestions.
                  >
                  --Marco
                  Glad it worked!

                  Thanks,

                  Onur

                    Comment

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