Spread Windows Forms 15.0
GrapeCity.Win.PluginInputMan Assembly / GrapeCity.Win.Spread.InputMan.CellType Namespace / GcComboBox Class / OnDropDownOpening Method
A DropDownOpeningEventArgs instance contains the event data.

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    OnDropDownOpening Method (GcComboBox)
    In This Topic
    Raises the DropDownOpening event.
    Protected Overridable Sub OnDropDownOpening( _
       ByVal e As DropDownOpeningEventArgs _
    Dim instance As GcComboBox
    Dim e As DropDownOpeningEventArgs
    protected virtual void OnDropDownOpening( 
       DropDownOpeningEventArgs e


    A DropDownOpeningEventArgs instance contains the event data.
    Raising an event invokes the event handler through a delegate.

    The OnDropDownOpening method also allows derived classes to handle the event without attaching a delegate. This is the preferred technique for handling the event in a derived class.

    Notes to Inheritors: When overriding OnDropDownOpening in a derived class, be sure to call the base class's OnDropDownOpening method so that registered delegates receive the event.

    See Also