<com:TContent ID="Content"> <!-- <com:System.Web.UI.ActiveControls.TActiveButton ID="addInvestType" Text="Add" OnCallback="doSave" /> --> <com:System.Web.UI.ActiveControls.TActiveButton id="button1" OnClick="doOnClick" OnCallback="doSave" Text="Save" /> <com:System.Web.UI.ActiveControls.TActiveLabel ID="label1" Text="Label 1" /> </com:TContent>