TreeView for WinForms | ComponentOne
C1.Win.TreeView Namespace / C1TreeView Class / Collapsing Event

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    Collapsing Event (C1TreeView)
    In This Topic
    Occurs before the tree node is collapsed. Allows to cancel the change.
    Syntax
    'Declaration
     
    
    <C1DescriptionAttribute("C1TreeView.Collapsing", "Occurs before the tree node is collapsed. Allows to cancel the change.")>
    <C1CategoryAttribute("Behavior")>
    Public Event Collapsing As C1TreeViewCancelEventHandler
    [C1Description("C1TreeView.Collapsing", "Occurs before the tree node is collapsed. Allows to cancel the change.")]
    [C1Category("Behavior")]
    public event C1TreeViewCancelEventHandler Collapsing
    Event Data

    The event handler receives an argument of type C1TreeViewCancelEventArgs containing data related to this event. The following C1TreeViewCancelEventArgs properties provide information specific to this event.

    PropertyDescription
    (Inherited from System.ComponentModel.CancelEventArgs)
    Gets the tree node that has been checked, expanded, collapsed, or selected.  
    See Also