visual basic :
Dim upMaster As UpdatePanel = DirectCast(Page.Master.FindControl("UpdatePanelAdiBuraya"), UpdatePanel)
c# :
UpdatePanel upMaster = Page.Master.FindControl("UpdatePanelAdiBuraya") As UpdatePanel;
Dim upMaster As UpdatePanel = DirectCast(Page.Master.FindControl("UpdatePanelAdiBuraya"), UpdatePanel)
c# :
UpdatePanel upMaster = Page.Master.FindControl("UpdatePanelAdiBuraya") As UpdatePanel;