C# 水晶报表导出pdf文件

/// <summary>
/// 导出pdf文件
/// </summary>
/// <param name="mjsReport">报表文件数据(取 crystalReportViewer1.ReportSource = rp中rp的值)</param>
/// <param name="reportFileName">导出文件名称,例如:111.pdf</param>
private void pdfExport(ReportDocument mjsReport, string reportFileName)
{
try
{
SaveFileDialog SaveFileDialog1 = new SaveFileDialog();
 ExportOptions mjsReportExportOptions = new ExportOptions();
 mjsReportExportOptions = mjsReport.ExportOptions; 
mjsReportExportOptions.ExportFormatType = ExportFormatType.PortableDocFormat;
SaveFileDialog1.Filter = "Report Files (*.pdf)|*.pdf";
reportFileName = AppDomain.CurrentDomain.BaseDirectory + "\\pdfExport\\"+ reportFileName;
if (!string.IsNullOrEmpty(reportFileName))
{
mjsReport.ExportToDisk(ExportFormatType.PortableDocFormat, reportFileName);
}
}
catch (Exception ex)
{
LogWrite.AddLgoToTXT("pdfExport异常反参：" + ex.Message);
}
}