使用参数在PDF中一起打开2个Crystal Reports

using System;
using System.IO;
using CrystalDecisions.CrystalReports.Engine;
using iTextSharp.text;
using iTextSharp.text.pdf;

public void MergeCrystalReportsToPDF(string reportPath1, string reportPath2, string outputPath)
{
    // 创建一个新的PDF文档
    Document document = new Document();
    PdfCopy copy = new PdfCopy(document, new FileStream(outputPath, FileMode.Create));
    document.Open();

    // 加载第一个Crystal Report并导出为PDF
    ReportDocument report1 = new ReportDocument();
    report1.Load(reportPath1);
    MemoryStream ms1 = (MemoryStream)report1.ExportToStream(ExportFormatType.PortableDocFormat);
    PdfReader reader1 = new PdfReader(ms1);
    for (int i = 1; i <= reader1.NumberOfPages; i++)
    {
        copy.AddPage(copy.GetImportedPage(reader1, i));
    }
    reader1.Close();
    ms1.Close();

    // 加载第二个Crystal Report并导出为PDF
    ReportDocument report2 = new ReportDocument();
    report2.Load(reportPath2);
    MemoryStream ms2 = (MemoryStream)report2.ExportToStream(ExportFormatType.PortableDocFormat);
    PdfReader reader2 = new PdfReader(ms2);
    for (int i = 1; i <= reader2.NumberOfPages; i++)
    {
        copy.AddPage(copy.GetImportedPage(reader2, i));
    }
    reader2.Close();
    ms2.Close();

    // 关闭文档
    document.Close();
}