在 asp.net c# 上将 fastreport 导出为 pdf 时出错

Question

我想将由 FastReport 设计的 .frx 报告导出为 pdf 或 excel 文件到 c# web 表单应用程序，如下代码所示：

    public static bool ShowReport(string ReportFileName, DataTable ReportData, string DBObjectName, string ExportType, out string Message, params string[] AdditionalParams)
    {
        FastReport.Utils.Config.WebMode = true;
        string ReportFile = HttpContext.Current.Server.MapPath(WPResources.ReportsRoot) + string.Format("{0}_{1}.frx", ReportFileName, ExportType.ToUpper());

        FastReport.Report objReport = new FastReport.Report();
        objReport.Load(ReportFile);
        objReport.Dictionary.Connections.Clear();
        System.Data.DataTable resultTable = new DataTable();

        objReport.RegisterData(ReportData, DBObjectName);
        objReport.GetDataSource(DBObjectName).Enabled = true;


        int ParamsCount = AdditionalParams.Length;
        if ((ParamsCount % 2) != 0)
            ParamsCount--;

        for (int i = 0; i < ParamsCount; i += 2)
        {
            var DynamicControl = (objReport.FindObject(AdditionalParams[i]) as FastReport.TextObject);
            if (DynamicControl != null)
            {
                DynamicControl.Text = AdditionalParams[i + 1];
                DynamicControl.Visible = !string.IsNullOrEmpty(AdditionalParams[i + 1]);
            }
        }

        (objReport.FindObject("rptData") as FastReport.DataBand).DataSource = objReport.GetDataSource(DBObjectName);

        string fileName = Path.GetFileNameWithoutExtension(ReportFile);
        fileName += "_" + WPFarsiDate.Today.ToString().Replace("/", ".") + "_" +
            DateTime.Now.Hour.ToString() + "." +
            DateTime.Now.Minute.ToString();

        if (ExportType == "Excel")
        {
            using (MemoryStream objMemoryStream = new MemoryStream())
            {
                objReport.Prepare(false);
                FastReport.Export.OoXML.Excel2007Export objExcel2007Export = new FastReport.Export.OoXML.Excel2007Export();
                objExcel2007Export.OpenAfterExport = false;
                objExcel2007Export.Export(objReport, objMemoryStream);
                byte[] buffer = objMemoryStream.ToArray();
                HttpContext.Current.Response.ClearHeaders();
                HttpContext.Current.Response.Clear();
                HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
                HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("inline;filename={0}.xlsx", fileName));
                HttpContext.Current.Response.BinaryWrite(buffer);
                HttpContext.Current.Response.End();
            }
        }
        else if (ExportType == "Pdf")
        {
            using (MemoryStream objMemoryStream = new MemoryStream())
            {
                objReport.Prepare(false);
                FastReport.Export.Pdf.PDFExport objPDFExport = new FastReport.Export.Pdf.PDFExport();
                objPDFExport.EmbeddingFonts = true;
                objPDFExport.OpenAfterExport = false;
                objPDFExport.Export(objReport, objMemoryStream);
                byte[] buffer = objMemoryStream.ToArray();
                HttpContext.Current.Response.ClearHeaders();
                HttpContext.Current.Response.Clear();
                HttpContext.Current.Response.ContentType = "application/octet-stream";
                HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}.pdf", fileName));
                HttpContext.Current.Response.Clear();
                HttpContext.Current.Response.BinaryWrite(buffer);
                HttpContext.Current.Response.End();

            }
        }

        Message = string.Empty;
        return true;
    }

当我把它导出到excel时，这没有任何关系，它会成功完成。但是当我将其导出为 pdf 时，出现此错误：

Showing a modal dialog box or form when the application is not running in UserInteractive mode is not a valid operation. Specify the ServiceNotification or DefaultDesktopOnly style to display a notification from a service application.

需要注意的是，上述错误只是发生在主服务器上，在localhost上可以成功完成作业。如果有人能解释这个问题的解决方案，那将非常有帮助。

Answer 1

你试过调试吗？哪一行抛出这个错误？您在桌面版中看到任何对话框 windows 了吗？尽量避免。

Answer 2

经过一番努力，我找到了解决问题的方法。 .frx 文件中使用的字体不是 windows/fonts 文件夹。所以我在那里复制了提到的字体并且它工作正常。

Answer 3

我在我的一个 ASP.Net Web 表单项目中使用快速报告，当我尝试导出 PDF 时看到此异常。我在 .aspx 文件中有这个标签：

<fastreport:webreport id="remainedLeave" runat="server" 
Width="100%" Height="100%"></fastreport:webreport>

将此属性添加到快速报告标签解决了我的问题：

PdfEmbeddingFonts="false"

在 asp.net c# 上将 fastreport 导出为 pdf 时出错

Error in exporting fastreport to pdf on asp.net c#

c#

asp.net

pdf

export

fastreport