将gridview数据导出为PDF错误 [英] exporting gridview data to PDF error

问题描述

pl ..帮我修复错误

pl.. help me to fix the error

Unable to cast object of type ''iTextSharp.text.html.simpleparser.CellWrapper'' to type ''iTextSharp.text.Paragraph''.

Response.ContentType = "application/pdf";
       Response.AddHeader("content-disposition", "attachment;filename=UserDetails.pdf");
       Response.Cache.SetCacheability(HttpCacheability.NoCache);
       StringWriter sw = new StringWriter();
       HtmlTextWriter hw = new HtmlTextWriter(sw);
       UserListGrid.AllowPaging = false;
       FillGrid();
       UserListGrid.DataBind();
       UserListGrid.RenderControl(hw);
       UserListGrid.HeaderRow.Style.Add("width", "15%");
       UserListGrid.HeaderRow.Style.Add("font-size", "10px");
       UserListGrid.Style.Add("text-decoration", "none");
       UserListGrid.Style.Add("font-family", "Arial, Helvetica, sans-serif;");
       UserListGrid.Style.Add("font-size", "8px");
       StringReader sr = new StringReader(sw.ToString());
       Document pdfDoc = new Document(PageSize.A2, 7f, 7f, 7f, 0f);
       HTMLWorker htmlparser = new HTMLWorker(pdfDoc);
       PdfWriter.GetInstance(pdfDoc, Response.OutputStream);
       pdfDoc.Open();
       htmlparser.Parse(sr);------> Error
       pdfDoc.Close();
       Response.Write(pdfDoc);
       Response.End();

推荐答案

似乎是这样的 http://stackoverflow.com/questions/12113425/itextsharp-error-on-trying-to-parse-html-for-pdf-conversion [ ^ ] ..

seems like this http://stackoverflow.com/questions/12113425/itextsharp-error-on-trying-to-parse-html-for-pdf-conversion[^]..

您可以在以下类似问题中找到答案：

http://csharpdotnetfreak.blogspot.com/2008/12/export-gridview-to-pdf-using-itextsharp。 html [ ^ ]

http://forums.asp.net/t /1832026.aspx/1 [ ^ ]

将数据导出到Excel，Word，PDF而不使用DataBase自动化 [< a href =http://www.codeproject.com/Articles/151789/Export-Data-to-Excel-Word-PDF-without-Automation-ftarget =_ blanktitle =New Window> ^ ]

http ：//www.dotnetspider.com/forum/301724-Export-data-pdf-word-excel-c-.net.aspx [ ^ ]

You can find answers in below similar questions:
http://csharpdotnetfreak.blogspot.com/2008/12/export-gridview-to-pdf-using-itextsharp.html[^]
http://forums.asp.net/t/1832026.aspx/1[^]
Export Data to Excel, Word, PDF without Automation from DataBase[^]
http://www.dotnetspider.com/forum/301724-Export-data-pdf-word-excel-c-.net.aspx[^]

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