一、前台代码 <DIV id="Lay1" style="Z-INDEX: 101; LEFT: 0.92%; VISIBILITY: hidden; WIDTH: 99%; CURSOR: crosshair; POSITION: absolute; TOP: 32px; HEIGHT: 95%; BACKGROUND-COLOR: #ffffff"><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><FONT face="宋体"></FONT><br> <b><font color="#800080" size="2"> & nbsp; 正在检索数据,请稍候</font></b> <table align="center"> <tr> <td> <div style="BORDER-RIGHT: black 1px solid; PADDING-RIGHT: 2px; BORDER-TOP: black 1px solid; PADDING-LEFT: 2px; FONT-SIZE: 8pt; PADDING-BOTTOM: 2px; BORDER-LEFT: black 1px solid; PADDING-TOP: 2px; BORDER-BOTTOM: black 1px solid"><span id="progress1"> </span> <span id="progress2"> </span> <span id="progress3"> </span> <span id="progress4"> </span> <span id="progress5"> </span> <span id="progress6"> </span> <span id="progress7"> </span> <span id="progress8"> </span> <span id="progress9"> </span> <span id="progress10"> </span> <span id="progress11"> </span> <span id="progress12"> </span> <span id="progress13"> </span><span id="progress14"> </span><span id="progress15"> </span> </div> </td> </tr> </table> <script language="javascript">var progressEnd = 15; // set to number of progress <span>'s.var progressColor = 'blue'; // set to progress bar colorvar progressInterval = 300; // set to time between updates (milli-seconds)var progressAt = progressEnd;var progressTimer;function progress_clear() { for (var i = 1; i <= progressEnd; i++) document.getElementById('progress'+i).style.backgroundColor = 'transparent'; progressAt = 0;}function progress_update() { progressAt++; if (progressAt > progressEnd) progress_clear(); else document.getElementById('progress'+progressAt).style.backgroundColor = progressColor; progressTimer = setTimeout('progress_update()',progressInterval);}function progress_stop() { clearTimeout(progressTimer); progress_clear();}//progress_update(); // start progress bar </script> </DIV> <asp:Button id="but_find" style="Z-INDEX: 102; LEFT: 160px; POSITION: absolute; TOP: 0px" runat="server" Text="查询" Width="120px"></asp:Button> 二、.cs代码: private void Page_Load(object sender, System.EventArgs e) { if(!IsPostBack) { but_find.Attributes.Add("onClick", "Lay1.style.visibility='';progress_update();"); } } public void scriptjdt(System.Web.UI.Page objPage , string strValue ) { string jb ; jb = "<script language='JavaScript'>" + strValue + "</script>"; objPage.RegisterStartupScript("jdt_ok", jb); } Web 窗体设计器生成的代码#region Web 窗体设计器生成的代码 override protected void OnInit(EventArgs e) { // // CODEGEN: 该调用是 ASP.NET Web 窗体设计器所必需的。 // InitializeComponent(); base.OnInit(e); } /**//// <summary> /// 设计器支持所需的方法 - 不要使用代码编辑器修改 /// 此方法的内容。 /// </summary> private void InitializeComponent() { this.but_find.Click += new System.EventHandler(this.but_find_Click); this.Load += new System.EventHandler(this.Page_Load); } #endregion private void but_find_Click(object sender, System.EventArgs e) { this.scriptjdt(this, "Lay1.style.visibility='hidden';progress_stop();"); } 转载于:https://www.cnblogs.com/xiachufeng/archive/2010/08/31/1813983.html