function btnDelete(oButton, oEvent) { if (confirm("确定要删除吗?")) { oEvent.needPostBack = true; } else { oEvent.needPostBack = false; } }
后台btnDel为WebImageButton
btnDel.AutoSubmit = false; btnDel.ClientSideEvents.Click = "btnDelete";
btnDel.AutoSubmit = false;这句一定要写,表示非自动提交