public string OnClientDropDownOpened { get; set; }

Public Property OnClientDropDownOpened As String
	Get
	Set

public:
property String^ OnClientDropDownOpened {
	String^ get ();
	void set (String^ value);
}

member OnClientDropDownOpened : string with get, set

Property Value

Use the OnClientDropDownOpened property to specify a JavaScript function that will be executed after a toolbar dropdown item is opened - either by left-clicking it with the mouse or hitting the down arrow after tabbing to that item.

Two parameters are passed to the handler

• sender (the client-side KaxToolBar object)
• eventArgs with two properties
  • item - the instance of the dropdown item which is opened
  • domEvent - the reference to the browser DOM event (null if the event was initiated by calling a client-side method such as dropDownItem.showDropDown())

<script language="javascript">
function clientDropDownOpened(sender, eventArgs)
{
var toolBar = sender;
var dropDownItem = eventArgs.get_item();

alert("You just opened the '" + dropDownItem.get_text() + "' dropDown in the '" + toolBar.get_id() + "' toolBar.");

}
</script>

<kettic:KaxToolBar id="KaxToolBar1" runat="server" OnClientDropDownOpened="clientDropDownOpened">
<Items>
<kettic:KaxToolBarButton Text="Left"></kettic:KaxToolBarButton>
<kettic:KaxToolBarButton Text="Center"></kettic:KaxToolBarButton>
<kettic:KaxToolBarButton Text="Right"></kettic:KaxToolBarButton>
<kettic:KaxToolBarDropDown Text="Align">
<Buttons>
<kettic:KaxToolBarButton Text="Left"></kettic:KaxToolBarButton>
<kettic:KaxToolBarButton Text="Center"></kettic:KaxToolBarButton>
<kettic:KaxToolBarButton Text="Right"></kettic:KaxToolBarButton>
</Buttons>
</kettic:KaxToolBarDropDown>
<kettic:KaxToolBarSplitButton Text="Right">
<Buttons>
<kettic:KaxToolBarButton Text="Left"></kettic:KaxToolBarButton>
<kettic:KaxToolBarButton Text="Center"></kettic:KaxToolBarButton>
<kettic:KaxToolBarButton Text="Right"></kettic:KaxToolBarButton>
</Buttons>
</kettic:KaxToolBarSplitButton>
</Items>
</kettic:KaxToolBar>

Reference