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我制作的程序应该使用 iTextsharp 将 Html 转换为 pdf。但是每次我运行程序时， HTMLWorker.parse(stringreader reader);. 异常说它找不到网络路径。

    public string Run(string html, string pdfName)
    {
        try
        {
            Document doc = new Document();
            //PdfWriter writer2 = PdfWriter.GetInstance(doc, new FileStream(@"L:\" + "Test54" + ".pdf", FileMode.Create));
            StyleSheet styles = new StyleSheet();
            string filePath = @"Z:\Emon Stage\" + "test" + ".pdf";
            using (FileStream pdfStream = new FileStream(filePath, FileMode.Create))
            {
                using (PdfWriter writer = PdfWriter.GetInstance(doc, pdfStream))
                {
                    writer.CloseStream = false;
                    doc.Open();
                    doc.OpenDocument();
                    doc.NewPage();
                    if (doc.IsOpen() == true)
                    {
                        using (StringReader reader = new StringReader(html))
                        {
                            //XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, reader);
                            doc.Add(new Paragraph(" "));
                            using (HTMLWorker worker = new HTMLWorker(doc))
                            {
                                worker.Open();
                                worker.StartDocument();
                                worker.NewPage();
                                worker.Parse(reader);
                                worker.SetStyleSheet(styles);

                                List<IElement> ie = iTextSharp.text.html.simpleparser.HTMLWorker.ParseToList(reader, null);

                                foreach (IElement element in ie)
                                {
                                    doc.Add((IElement)element);
                                }

                                worker.EndDocument();
                                worker.Close();
                            }
                        }
                    }
                    writer.Close();
                }
            }

            doc.CloseDocument();
            doc.Close();
            doc.Dispose(); 

            return string.Empty;
        }
        catch (Exception ex)
        {
            return ex.Message;
        }

    }

根据stackoverflow的某人所说，我使用的html字符串存在问题：

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    <span class="l"></span><span class="m">Jetzt drucken</span><span class="r"></span>
</div>
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<div class="clear-both"></div>
<div class="print-header">
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    <div class="date-insertion">
      <span id="ctl00_decoratedArea_articlePrintHeader_printFound">Inserat entdeckt am 03.09.2012</span>
    </div>
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<div class="print-dealer">

    <div id="ctl00_decoratedArea_customerInfo_privateCustomerInfo_contactAddressPanel" class="contact-address">

    <p>D&nbsp;97225 Zellingen</p>

</div>

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    <div id="ctl00_decoratedArea_customerInfo_privateCustomerInfo_contactPhoneNoPanel">


                <p><b id="ctl00_decoratedArea_customerInfo_privateCustomerInfo_contactPhoneNoRepeater_ctl00_contactPhoneNoType">Tel.:</b>
                +49 (0)177 / 7931437</p>


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    Corvette C4 
</div>        
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</div>
    </div>
</div>

        </div>
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        <div class="floatLeft">
            <div class="detail-column-left">
                <div class="car-big">
    <div class="carpics">
        </div>
</div>
             </div>

             <div class="detail-column-right">


<div class="detail-info">
    <table class="i-detail">

        <tr id="ctl00_decoratedArea_myArticleDataControl1_pricePublicRow">
    <td class="c1">
                <b id="ctl00_decoratedArea_myArticleDataControl1_pricePublicLabel">Preis:</b>

            </td>
    <td valign="bottom" class="price-fat">
                <span id="ctl00_decoratedArea_myArticleDataControl1_pricePublicValue">€ 7.700,-</span>
            </td>
</tr>





        <tr id="ctl00_decoratedArea_myArticleDataControl1_emptyRow">
    <td colspan="2" style="height:13px"></td>
</tr>



        <tr>
            <td class="c1">
                <span id="ctl00_decoratedArea_myArticleDataControl1_offerTypeKey">Fahrzeugkategorie:</span>

            </td>
            <td class="c2">
                <span id="ctl00_decoratedArea_myArticleDataControl1_offerTypeValue">Gebraucht</span>
            </td>
        </tr>




        <tr id="ctl00_decoratedArea_myArticleDataControl1_bodyTypeRow">
    <td class="c1">
                <span id="ctl00_decoratedArea_myArticleDataControl1_bodyTypeKey">Aufbau:</span>
            </td>
    <td class="c2">
                <span id="ctl00_decoratedArea_myArticleDataControl1_bodyTypeValue">Cabrio</span>    
            </td>
</tr>

        <tr id="ctl00_decoratedArea_myArticleDataControl1_firstRegRow">
    <td class="c1">
                <span id="ctl00_decoratedArea_myArticleDataControl1_firstRegKey">Erstzulassung:</span>
            </td>
    <td class="c2">
                <span id="ctl00_decoratedArea_myArticleDataControl1_firstRegValue">07/1996</span>
            </td>
</tr>

        <tr id="ctl00_decoratedArea_myArticleDataControl1_mileageRow">
    <td class="c1">
                <span id="ctl00_decoratedArea_myArticleDataControl1_mileageKey">Kilometerstand:</span>
            </td>
    <td class="c2">
                <span id="ctl00_decoratedArea_myArticleDataControl1_mileageValue">169.000 km</span>
            </td>
</tr>

        <tr id="ctl00_decoratedArea_myArticleDataControl1_fuelRow">
    <td class="c1">
                <span id="ctl00_decoratedArea_myArticleDataControl1_fuelKey">Kraftstoff:</span>

            </td>
    <td class="c2">
                <span id="ctl00_decoratedArea_myArticleDataControl1_fuelValue">Benzin</span>


            </td>
</tr>

        <tr id="ctl00_decoratedArea_myArticleDataControl1_powerRow">
    <td class="c1">
                <span id="ctl00_decoratedArea_myArticleDataControl1_powerKey">Leistung:</span>
            </td>
    <td class="c2">
                    207
                    <span id="ctl00_decoratedArea_myArticleDataControl1_kwUnit">kW</span>
                    (281
                    <span id="ctl00_decoratedArea_myArticleDataControl1_hpUnit">PS</span>)
            </td>
</tr>

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    <td class="c1">
                <span id="ctl00_decoratedArea_myArticleDataControl1_gearingTypeKey">Getriebeart:</span>    
            </td>
    <td class="c2">
                <span id="ctl00_decoratedArea_myArticleDataControl1_gearingTypeValue">Automatik</span>
            </td>
</tr>

        <tr id="ctl00_decoratedArea_myArticleDataControl1_bodyColorRow">
    <td class="c1">
                <span id="ctl00_decoratedArea_myArticleDataControl1_bodyColorKey">Außenfarbe:</span>
            </td>
    <td class="c2">
                <span id="ctl00_decoratedArea_myArticleDataControl1_bodyColorValue">Grün Metallic</span>
            </td>
</tr>









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    <td class="c1">
                    <span>Alle Kraftstoffe:</Span>

                </td>
    <td class="c2">
                    <span class="c2-sub">Benzin</div>

                </td>
</tr>









            <tr id="ctl00_decoratedArea_ArticleMoreDetailsData_generalInspectionRow">
    <td class="c1">
                    <span id="ctl00_decoratedArea_ArticleMoreDetailsData_generalInspectionKeyLabel">HU/AU:</span>
                </td>
    <td class="c2">
                    <span id="ctl00_decoratedArea_ArticleMoreDetailsData_generalInspectionValueLabel">02/2014</span>
                </td>
</tr>


















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