Question

我有经典的asp.net网站。我有一个数据网格，我想导出为excel表。该站点使用Windows身份验证。

我选择code while googling寻求解决方案。以下是我在FF和Chrome中遇到的问题，需要帮助来纠正它：

有时文件下载会毫无问题地发生，但是如果我让窗口处于非活动状态一分钟左右然后再试一次，那么我会发现页面未找到问题，或者浏览器会继续请求登录（陷入困境）。
有时候点击导出按钮时，FF只会继续显示Windows登录弹出窗口，就像它被卡在循环中一样。

按钮：

<asp:Button ID="cmdExportDataGridToExcel_Click" runat="server" OnClick="cmdExportToExcel_Click" CssClass="StandardText" Text="Export to Excel" Width="120px" Height="33px"></asp:Button>

代码：

protected void cmdExportDataGridToExcel_Click(object sender, System.EventArgs e)
    {
        //export to excel
        Response.Clear();
        var userName = CommonMethods.GetUserId();
        var fileName = string.Format("ScheduledOrdersReport-{0}-{1:yyyyMMddhhmmsstt}.xls", userName, DateTime.Now);
        Response.Buffer = true;
        Response.AddHeader("content-disposition", "attachment; filename=" + fileName);
        Response.ContentType = "application/vnd.ms-excel";
        Response.Charset = "";
        hsGrid.AllowPaging = false;
        this.BindHSGrid(false, string.Empty);
        //this.EnableViewState = false;
        var oStringWriter = new StringWriter();
        var oHtmlTextWriter = new HtmlTextWriter(oStringWriter);
        this.ClearControls(hsGrid);
        hsGrid.RenderControl(oHtmlTextWriter);
        Response.Write(oStringWriter.ToString());
        Response.End();
    }

private void ClearControls(Control control)
    {
        for (int i = control.Controls.Count - 1; i >= 0; i--)
        {
            ClearControls(control.Controls[i]);
        }
        if (!(control is TableCell))
        {
            if (control.GetType().GetProperty("SelectedItem") != null)
            {
                LiteralControl literal = new LiteralControl();
                control.Parent.Controls.Add(literal);
                try
                {
                    literal.Text = (string)control.GetType().GetProperty("SelectedItem").GetValue(control, null);
                }
                catch
                {
                }
                control.Parent.Controls.Remove(control);
            }
            else if (control.GetType().GetProperty("Text") != null)
            {
                LiteralControl literal = new LiteralControl();
                control.Parent.Controls.Add(literal);
                literal.Text = (string) control.GetType().GetProperty("Text").GetValue(control, null);
                control.Parent.Controls.Remove(control);
            }
        }
    }

更新1 我已经通过将数据放入会话然后从会话中创建excel来测试它。它也导致了同样的错误。

var dv = (DataView) Session["ScheduledOrdersReport"];

            Response.Clear();
            var userName = CommonMethods.GetUserId();
            var fileName = string.Format("ScheduledOrdersReport-{0}-{1:yyyyMMddhhmmsstt}.xls", userName, DateTime.Now);

            Response.AddHeader("content-disposition", "attachment; filename=" + fileName);
            Response.Charset = "";
            Response.ContentType = "application/vnd.ms-excel"; //"application/vnd.xls";

            var stringWrite = new StringWriter();
            var htmlWrite = new HtmlTextWriter(stringWrite);

            var g = new GridView();
            g.DataSource = dv;
            g.DataBind();

            g.RenderControl(htmlWrite);
            Response.Write(stringWrite.ToString());
            Response.End();

更新2 我只是通过打开一个弹出窗口然后使用更新1代码进行了另一个测试。没有问题，点击或保持页面一段时间，然后再次单击该按钮。

看起来它是回复和回复明确和结束问题。

我只是暂时无法找到任何可以正确解决问题的方法。可能是我需要休息一下。

Answer 1

如何启动webclient？并设置NetworkCredentials？那么你每次都必须登录......

像：

.jqmWindow {
   display: none;
   position: fixed;
   top: 17%;
   left: 50%;
   margin-left: -300px;
   width: 600px;
   background-color: #FFF;
   color: #333;
   border: 4px solid #8d8d8b;
   padding: 12px;
}

`

asp.net datagrid导出到excel c＃issue

1 个答案: