使用itextsharp生成html到pdf

Question

public void pdfgenforffd(TextBox TextBox3, HiddenField HiddenField1, HiddenField HiddenField4, AjaxControlToolkit.HTMLEditor.Editor Editor1)
{

    HttpContext.Current.Response.Clear();
    HttpContext.Current.Response.ContentType = "application/pdf";
    // Create PDF document
    Document pdfDocument = new Document(PageSize.A4, 50, 25, 15, 10);

    PdfWriter wri = PdfWriter.GetInstance(pdfDocument, new FileStream("d://" + HiddenField1.Value + "_" + HiddenField4.Value + ".pdf", FileMode.Create));

    PdfWriter.GetInstance(pdfDocument, HttpContext.Current.Response.OutputStream);

    pdfDocument.Open();
    string htmlText = Editor1.Content;
    //string htmlText = htmlText1.Replace(Environment.NewLine, "<br/>");

    HTMLWorker htmlWorker = new HTMLWorker(pdfDocument);

    htmlWorker.Parse(new StringReader(htmlText));


    pdfDocument.Close();
    HttpContext.Current.Response.End();
}

i am using the above code for pdf generation from html text in HTMLEditor(ajax control). 我正在使用上面的代码从HTMLEditor（ajax控件）中的html文本生成pdf。 If i hardcode a table with each column of different width, into HTMLEditor text than while generating pdf the column get devided equally ie all column have fixed size on pdf even if i specify some custom width for each column. 如果我用不同宽度的每一列硬编码一个表，进入HTMLEditor文本而不是生成pdf时，列相同，即使我为每列指定一些自定义宽度，所有列在pdf上都有固定大小。

I want to generate pdf that can convert html to pdf,also divide table column with specified width. 我想生成可以将html转换为pdf的pdf，也可以将表格列除以指定的宽度。 How to do it? 怎么做？

Answer 1

i don't think HTMLWorker (iTextSharp) supports table widths yet. 我认为HTMLWorker（iTextSharp）还不支持表格宽度。

so you need to: 所以你需要：

parse your HTML to find the columns widths - use a regular expression or something like Html Agility Pack . 解析HTML以查找列宽 - 使用正则表达式或类似Html Agility Pack 。
call HTMLWorker.ParseToList() to iterate over iText elements and look for PdfPTable(s) 调用HTMLWorker.ParseToList（）迭代iText元素并查找PdfPTable（s）
manually set the PdfPTable width by calling SetWidthPercentage() 通过调用SetWidthPercentage（）手动设置PdfPTable宽度

here's an example (excluding step 1) using a HTTP handler: 这是使用HTTP处理程序的示例（不包括步骤1）：

<%@ WebHandler Language='C#' Class='tableColumnWidths' %>
using System;
using System.Collections.Generic;
using System.IO;
using System.Web;
using iTextSharp.text;
using iTextSharp.text.html.simpleparser;
using iTextSharp.text.pdf;

public class tableColumnWidths : IHttpHandler {
  public void ProcessRequest (HttpContext context) {
    context.Response.ContentType = "application/pdf";
    string html = @"
<html><head></head><body> 
<p>A paragraph</p>   
<table border='1'>
<tr><td>row1-column1</td><td>row1-column2</td><td>row1-column3</td></tr>
<tr><td>row2-column1</td><td>row2-column2</td><td>row2-column3</td></tr>
</table>
</body></html>
    ";
/*
 * need the Rectangle for later when we set the column widths
 */
    Rectangle rect = PageSize.LETTER;
    Document document = new Document(rect);
    PdfWriter.GetInstance(document, context.Response.OutputStream);
    document.Open();
/* 
 * iterate over iText elements
 */
    List<IElement> ie = HTMLWorker.ParseToList(
      new StringReader(html), null
    );
/*
 * page width
 */
    float pageWidth = rect.Width;
/*
 * look for PdfPTable(s)
 */
    foreach (IElement element in ie) {
      PdfPTable table = element as PdfPTable;
/*
 * set the column widths
 */
      if (table != null) {
        table.SetWidthPercentage(
          new float[] {
            (float).25 * pageWidth, 
            (float).50 * pageWidth, 
            (float).25 * pageWidth
          },
          rect
        );
      }
      document.Add(element); 
    } 
    document.Close();  
  }
  public bool IsReusable {
    get { return false; }
  }
}

使用itextsharp生成html到pdf

问题描述

1 个解决方案

解决方案1
8 已采纳 2011-02-18 12:43:17

使用itextsharp生成html到pdf

问题描述

1 个解决方案

解决方案1 8 已采纳 2011-02-18 12:43:17

解决方案1
8 已采纳 2011-02-18 12:43:17