摘要： 1.创建进度条：& nbsp; 正在检索数据，请稍候... 2.设置查询按钮属性Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load'在此处放置初始化页的用户代码If Not IsPostBack Thebut_find.Attributes.Add("onClick", "Lay1.style.visibility='';progress_update();")End If 阅读全文