问iTextSharp PdfPtable空出来

EN

    private void addFinalCheckdata()
    {
        PdfPTable table = new PdfPTable(10);
        float[] widths = new float[] { 60f, 60f, 60f, 60f, 60f, 60f, 60f, 60f, 260f, 60f };
        table.TotalWidth = 800f;
        table.SetWidths(widths);
        table.LockedWidth = true;
        table.HorizontalAlignment = 0;

        // Add Answers 
        //string value = _LGSRobj.finalCheck.SatisfactoryVisualInspection;
        PdfPCell cell = new PdfPCell(new Phrase("z", _fntNormal7));
        // 1
        table.AddCell(cell);

        //value = _LGSRobj.finalCheck.EmergencyControl;
        cell = new PdfPCell(new Phrase("z", _fntNormal7));
        // 2
        table.AddCell(cell);

        //value = _LGSRobj.finalCheck.EarthBondingSatisfactory;
        cell = new PdfPCell(new Phrase("z", _fntNormal7));
        // 3
        table.AddCell(cell);

        //value = _LGSRobj.finalCheck.NumberofAppliancesTested;
        cell = new PdfPCell(new Phrase("z", _fntNormal7));
        // 4
        table.AddCell(cell);

        //value = _LGSRobj.finalCheck.serviceTimerSet;
        cell = new PdfPCell(new Phrase("z", _fntNormal7));
        // 5
        table.AddCell(cell);

        //value = _LGSRobj.finalCheck.StartPressure;
        cell = new PdfPCell(new Phrase("z", _fntNormal7));
        // 6
        table.AddCell(cell);

        //value = _LGSRobj.finalCheck.FinishPressure;
        cell = new PdfPCell(new Phrase("z", _fntNormal7));
        // 7
        table.AddCell(cell);

        //value = _LGSRobj.finalCheck.Pass;
        cell = new PdfPCell(new Phrase("z", _fntNormal7));
        // 8
        table.AddCell(cell);

        //value = _LGSRobj.finalCheck.InstallationCaped;
        cell = new PdfPCell(new Phrase("z", _fntNormal7));
        // 9
        table.AddCell(cell);

        _document.Add(table);
    }

PdfPTable table = new PdfPTable(10);