バージョン

DropDownClosing プロパティ

シンタックス
'宣言
 
Public Property DropDownClosing As String
public string DropDownClosing {get; set;}
使用例
WebDropDown1.ClientEvents.DropDownClosing = "WebDropDown_DropDownClosing"
WebDropDown1.ClientEvents.DropDownClosing = "WebDropDown_DropDownClosing";
// The client event 'DropDownClosing' takes two parameters sender and e
// sender  is the object which is raising the event
// e is the DropDownContainerEventArgs
function WebDropDown_DropDownClosing(sender, e) {
         if (!confirm("Are you sure you want to close the drop-down container?"))
        //Cancels the DropDownClosing event 
        e.set_cancel(true);
}
参照