使用itextsharp生成pdf文档的问题 [英] Problem in generating pdf docoments using itextsharp

问题描述

您好专家，
我正在生成pdf文档，但问题是显示了所有内容，但服务器控件除外

Default2.aspx代码

Hello experts,
i m generating pdf document but the problem is all the thing is is displayed except server controls

Code of Default2.aspx

<form id="form1"  runat="server">
<asp:PlaceHolder ID="PlaceholderPdf" runat="server">
    <div>
        <table border="1">
            <tr>
                <td colspan="2">
                    aspdotnetcodebook
                </td>
            </tr>
            <tr>
                <td>
                    cell1
                </td>
                <td>
                    cell2
                </td>
            </tr>
            <tr>
                <td colspan="2">
                    <asp:Label ID="lblLabel" runat="server" Text="Label Test">
                </td>
            </tr>
            <tr>
            <td>
            <asp:Repeater ID="Repeater1" runat="server">
        <itemtemplate>
            <asp:Label ID="lbl1" runat="server" Text="This is label1">
        </itemtemplate>
        <itemtemplate>
            <asp:Label ID="lbl2" runat="server" Text="This is label2">
        </itemtemplate>
        <itemtemplate>
            <asp:Label ID="lbl3" runat="server" Text="This is label3">
        </itemtemplate>
        
        </td>
            </tr>
        </table>
       
    </div>
   </form>

default2.aspx.cs的代码

Code of default2.aspx.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using System.Text.RegularExpressions;
using iTextSharp.text;
using iTextSharp.text.pdf;
using iTextSharp.text.html;
using iTextSharp.text.xml;
using System.Xml;
using System.Net;
using iTextSharp.text.html.simpleparser;
public partial class Default2 : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string TheUrl = Server.MapPath("~/default2.aspx");
        string response = GetHtmlPage(TheUrl);
        CreatePDFDocument(response);
    }
 static string GetHtmlPage(string strURL)
    {

        String strResult;
        WebResponse objResponse;
        WebRequest objRequest = HttpWebRequest.Create(strURL);
        objResponse = objRequest.GetResponse();
        using (StreamReader sr = new StreamReader(objResponse.GetResponseStream()))
        {
            strResult = sr.ReadToEnd();
            sr.Close();
        }
        return strResult;
    }
    public void CreatePDFDocument(string strHtml)
    {

        string strFileName = HttpContext.Current.Server.MapPath("test.pdf");
        // step 1: creation of a document-object
        Document document = new Document();
        // step 2:
        // we create a writer that listens to the document
        PdfWriter.GetInstance(document, new FileStream(strFileName, FileMode.Create));
        StringReader se = new StringReader(strHtml);
        HTMLWorker obj = new HTMLWorker(document);
        document.Open();
        obj.Parse(se);
        document.Close();
        ShowPdf(strFileName);
    }
    public void ShowPdf(string strFileName)
    {
        Response.ClearContent();
        Response.ClearHeaders();
        Response.AddHeader("Content-Disposition", "inline;filename=" + strFileName);
        Response.ContentType = "application/pdf";
        Response.WriteFile(strFileName);
        Response.Flush();
        Response.Clear();
    }
}

推荐答案

一个想法:您的目标PDF是文档.您服务器控件"不是文档的一部分.它们仅仅是服务器端编程的产物.从HTML文档的角度来看，这是不存在的.如果将页面加载到客户端并使用浏览器的查看页面源代码"，则可以看到实际存在的内容.这是您应该尝试转换为PDF的真实文档，而不是* .aspx页面的服务器端源代码.



另一个想法是在客户端上创建PDF文档.请在下面查看我的评论.
由于必须使用JavaScript，因此需要一个开放源代码的JavaScript库来编写PDF.
看一看: http://alivepdf.bytearray.org/ [

Just an idea: your target PDF is a document. You "server controls" are not parts of a document. They are merely the artifacts of server-side programming. From the stand point of HTML document, this do not exist. You can see what really exists if you load the page on a client side and use browser''s "View Page Source". This is the real document you should try to translate into PDF, not your server-side source code of an *.aspx page.



Another idea is to create a PDF document on the client side. Please see my comment below.
As it has to be JavaScript, you will need an Open-Source JavaScript library for writing PDF.
Look at this one: http://alivepdf.bytearray.org/[^].

—SA

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