进度条不会在response.end后隐藏

本文关键字：response end 隐藏 | 更新日期: 2023-09-27 18:17:46

我有功能下载excel文件在我的项目。单击导出按钮时，显示进度条。但即使浏览器的保存对话框出现，进度条也不是不可见的。问题是在回应之后。结束进度条未使用。进度条在asp.net ajax开始请求时可见，在请求结束时不可见。代码如下:

显示和隐藏进度条:

Sys.WebForms.PageRequestManager.getInstance().add_beginRequest(BeginRequestHandler);
        Sys.WebForms.PageRequestManager.getInstance().add_endRequest(EndRequestHandler);
        function BeginRequestHandler(sender, args) {
            //             alert('B');
            var elem = args.get_postBackElement();
            ActivateAlertDiv('visible', 'AlertDiv', elem.value + ' processing...');
        }
        function EndRequestHandler(sender, args) {
            ActivateAlertDiv('hidden', 'AlertDiv', '');
        }
        function ActivateAlertDiv(visstring, elem, msg) {
            var adiv = $get(elem);
            adiv.style.visibility = visstring;
            //                    adiv.innerHTML = msg;
        }

和文件下载导出点击:

Response.Clear();
                    Response.ClearHeaders();
                    Response.ClearContent();
                    Response.AddHeader("content-disposition", "attachment; filename=" + OUTPUTFILE + ".xls");
                    Response.AddHeader("Content-Type", "application/Excel");
                    Response.ContentType = "application/ms-excel.xls";
                    Response.AddHeader("Content-Length", file_New.Length.ToString());
                    Response.WriteFile(file_New.FullName);
                    Response.Flush();
                    file_New.Delete();

进度条不会在response.end后隐藏

因为当文件发送到客户端时响应已经结束。你需要在新的页面做。

在

中替换你的代码:

Session["OUTPUTFILE"] = OUTPUTFILE;
ScriptManager.RegisterStartupScript(this, typeof(string), "OPEN_WINDOW", "var Mleft = (screen.width/2)-(760/2);var Mtop = (screen.height/2)-(700/2);window.open( 'file.aspx', null, 'height=700,width=760,status=yes,toolbar=no,scrollbars=yes,menubar=no,location=no,top=''+Mtop+'', left=''+Mleft+''' );", true);

新页面(名为"file.aspx"):

protected void Page_Load(object sender, EventArgs e)
{
     Response.Clear();
     Response.ClearHeaders();
     Response.ClearContent();
     Response.AddHeader("content-disposition", "attachment; filename=" + Session["OUTPUTFILE"].ToString()+ ".xls");
     Response.AddHeader("Content-Type", "application/Excel");
     Response.ContentType = "application/ms-excel.xls";
     Response.AddHeader("Content-Length", file_New.Length.ToString());
     Response.WriteFile(file_New.FullName);
     Response.Flush();
     file_New.Delete();
}
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