public struct MatchFieldPairType

    {

        public IGRField grField;

        public int MatchColumnIndex;

    }

    public class PrintHelper

    {

        // 将 DataTable 的数据转储到 Grid++Report 的数据集中

        public static void FillRecordToReport(IGridppReport Report, DataTable dt)

        {

            MatchFieldPairType[] MatchFieldPairs = new MatchFieldPairType[Math.Min(Report.DetailGrid.Recordset.Fields.Count, dt.Columns.Count)];

            //根据字段名称与列名称进行匹配，建立DataReader字段与Grid++Report记录集的字段之间的对应关系

            int MatchFieldCount = ;

            for (int i = ; i < dt.Columns.Count; ++i)

            {

                foreach (IGRField fld in Report.DetailGrid.Recordset.Fields)

                {

                    if (String.Compare(fld.Name, dt.Columns[i].ColumnName, true) == )

                    {

                        MatchFieldPairs[MatchFieldCount].grField = fld;

                        MatchFieldPairs[MatchFieldCount].MatchColumnIndex = i;

                        ++MatchFieldCount;

                        break;

                    }

                }

            }

            // 将 DataTable 中的每一条记录转储到 Grid++Report 的数据集中去

            Report.PrepareRecordset();

            foreach (DataRow dr in dt.Rows)

            {

                //Report.PrepareRecordset();

                Report.DetailGrid.Recordset.Append();

                for (int i = ; i < MatchFieldCount; ++i)

                {

                    if (!dr.IsNull(MatchFieldPairs[i].MatchColumnIndex))

                        MatchFieldPairs[i].grField.Value = dr[MatchFieldPairs[i].MatchColumnIndex];

                }

                Report.DetailGrid.Recordset.Post();

            }

        }

}

　　　　　　　　　　　　　　　　　 var report = new GridppReport();
　　　　　　　　　　　　　　　　　 report.LoadFromFile(Server.MapPath("~/eExpressReportbulk.grf"));

　　　　　　　　　　　　　　　　 PrintHelper.FillRecordToReport(report, printDt);

                            string fileName = ConfigurationSettings.AppSettings["pdfPath"] + shipmentNumber + ".pdf";

                            //直接调用ExportDirect方法执行导出任务

                            report.ExportDirect(GRExportType.gretPDF, fileName, false, false);

                            FileStream stream = new FileStream(fileName, FileMode.OpenOrCreate);

                            byte[] buffer = new byte[stream.Length];

                            stream.Read(buffer, , Convert.ToInt32(stream.Length));

                            stream.Close();