バージョン

ItemSelecting プロパティ (DataMenuClientEvents)

クライアントの ItemSelecting イベントを処理する javascript 関数の名前を取得または設定します。
シンタックス
'宣言
 
Public Property ItemSelecting As String
public string ItemSelecting {get; set;}
使用例
WebDataMenu1.ClientEvents.ItemSelecting = "WebDataMenu1_ItemSelecting"
WebDataMenu1.ClientEvents.ItemSelecting = "WebDataMenu1_ItemSelecting";
// The client event 'ItemSelecting' takes two parameters sender and e
// sender  is the object which is raising the event
// e is the DataMenuItemCancelEventArgs

function WebDataMenu1_ItemSelecting(sender, e) {
    //Gets the DataMenuItem object that is going to be selected
    var Item = e.getItem();

    //Gets the text of the item
    var ItemText = Item.get_text();
    
    if (!confirm("Are you sure you want to select the item '"+ItemText+"'?"))
           //Cancels the ItemSelcting event
            e.set_cancel(true);

}
参照