把Excell转成PDF

需要引入的Dll：
Interop.ACRODISTXLib.dll
Microsoft.Office.Interop.Excel.dll

using System.Reflection;
using ExcelOLE = Microsoft.Office.Interop.Excel;
using PDFOLE = ACRODISTXLib;

private void ExcellFillPDF()
{
    ExcelOLE.Application excel;
    ExcelOLE._Workbook workbook;
    ExcelOLE._Worksheet worksheet;
    PDFOLE.PdfDistiller PDF;

    try
    {
        excel = new ExcelOLE.Application();
        excel.Visible = true;

        workbook = (ExcelOLE._Workbook)(excel.Workbooks.Add( Missing.Value ));
        worksheet = (ExcelOLE._Worksheet)workbook.ActiveSheet;
        worksheet.Cells[1, 1] = "PDF FILE";

        //Make psfile
        worksheet.PrintOut(Type.Missing, Type.Missing, Type.Missing,Type.Missing,
                "AdobePDF 8.0 J",
                true,
                Type.Missing,
                "c:\\pdffile.ps");
        //Start Acrobat Distiller
        PDF = new PDFOLE.PdfDistiller();
        //Convert to pdffile from psfile
        PDF.FileToPDF("c:\\pdffile.ps", "c:\\pdffile.pdf", "");

        excel.UserControl = true;
    }
    catch(Exception ex)
    {
    }
}