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From :http://www.cnblogs.com/ganmk/articles/1207832.html
使用方法:
protected void Page_Load(object sender, EventArgs e)
{
initJavascript();
FillCheckBox();
UnloadJavascript();
}
#region "页面加载中效果" /// <summary> /// 页面加载中效果 /// </summary> public static void initJavascript() { HttpContext.Current.Response.Write(" <script language=JavaScript type=text/javascript>"); HttpContext.Current.Response.Write("var t_id = setInterval(animate,20);"); HttpContext.Current.Response.Write("var pos=0;var dir=2;var len=0;"); HttpContext.Current.Response.Write("function animate(){"); HttpContext.Current.Response.Write("var elem = document.getElementById(‘progress‘);"); HttpContext.Current.Response.Write("if(elem != null) {"); HttpContext.Current.Response.Write("if (pos==0) len += dir;"); HttpContext.Current.Response.Write("if (len>32 || pos>79) pos += dir;"); HttpContext.Current.Response.Write("if (pos>79) len -= dir;"); HttpContext.Current.Response.Write(" if (pos>79 && len==0) pos=0;"); HttpContext.Current.Response.Write("elem.style.left = pos;"); HttpContext.Current.Response.Write("elem.style.width = len;"); HttpContext.Current.Response.Write("}}"); HttpContext.Current.Response.Write("function remove_loading() {"); HttpContext.Current.Response.Write(" this.clearInterval(t_id);"); HttpContext.Current.Response.Write("var targelem = document.getElementById(‘loader_container‘);"); HttpContext.Current.Response.Write("targelem.style.display=‘none‘;"); HttpContext.Current.Response.Write("targelem.style.visibility=‘hidden‘;"); HttpContext.Current.Response.Write("}"); HttpContext.Current.Response.Write("</script>"); HttpContext.Current.Response.Write("<style>"); HttpContext.Current.Response.Write("#loader_container {text-align:center; position:absolute; top:40%; width:100%; left: 0;}"); HttpContext.Current.Response.Write("#loader {font-family:Tahoma, Helvetica, sans; font-size:11.5px; color:#000000; background-color:#FFFFFF; padding:10px 0 16px 0; margin:0 auto; display:block; width:130px; border:1px solid #5a667b; text-align:left; z-index:2;}"); HttpContext.Current.Response.Write("#progress {height:5px; font-size:1px; width:1px; position:relative; top:1px; left:0px; background-color:#8894a8;}"); HttpContext.Current.Response.Write("#loader_bg {background-color:#e4e7eb; position:relative; top:8px; left:8px; height:7px; width:113px; font-size:1px;}"); HttpContext.Current.Response.Write("</style>"); HttpContext.Current.Response.Write("<div id=loader_container>"); HttpContext.Current.Response.Write("<div id=loader>"); HttpContext.Current.Response.Write("<div align=center>页面正在加载中 </div>"); HttpContext.Current.Response.Write("<div id=loader_bg><div id=progress> </div></div>"); HttpContext.Current.Response.Write("</div></div>"); HttpContext.Current.Response.Flush(); } public static void UnloadJavascript() { HttpContext.Current.Response.Write(" <script language=JavaScript type=text/javascript>"); HttpContext.Current.Response.Write("remove_loading();"); HttpContext.Current.Response.Write(" </script>"); } #endregion
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原文地址:http://www.cnblogs.com/wangjiahong/p/4563786.html