用C#实现生成PDF文档（原码）

用C#实现生成PDF文档（原码）

//write by wenhui.org
using System;
using System.IO;
using System.Text;
using System.Collections;

namespace PDFGenerator
{

public class PDFGenerator
{
static float pageWidth = 594.0f;
static float pageDepth = 828.0f;
static float pageMargin = 30.0f;
static float fontSize = 20.0f;
static float leadSize = 10.0f;

static StreamWriter pPDF=new StreamWriter("E:\\myPDF.pdf");

static MemoryStream mPDF= new MemoryStream();

static void ConvertToByteAndAddtoStream(string strMsg)
{
Byte[] buffer=null;
buffer=ASCIIEncoding.ASCII.GetBytes(strMsg);
mPDF.Write(buffer,0,buffer.Length);
buffer=null;
}

static string xRefFormatting(long xValue)
{
string strMsg =xValue.ToString();
int iLen=strMsg.Length;
if (iLen<10)
{
StringBuilder s=new StringBuilder();
int i=10-iLen;
s.Append('0',i);
strMsg=s.ToString() + strMsg;
}
return strMsg;
}

static void Main(string[] args)
{
ArrayList xRefs=new ArrayList();
//Byte[] buffer=null;
float yPos =0f;
long streamStart=0;
long streamEnd=0;
long streamLen =0;
string strPDFMessage=null;
//PDF文档头信息
strPDFMessage="%PDF-1.1\n";
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage="1 0 obj\n";
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="<< /Length 2 0 R >>\n";
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="stream\n";
ConvertToByteAndAddtoStream(strPDFMessage);
////////PDF文档描述
streamStart=mPDF.Length;
//字体
strPDFMessage="BT\n/F0 " + fontSize +" Tf\n";
ConvertToByteAndAddtoStream(strPDFMessage);
//PDF文档实体高度
yPos = pageDepth - pageMargin;
strPDFMessage=pageMargin + " " + yPos +" Td\n" ;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage= leadSize+" TL\n" ;
ConvertToByteAndAddtoStream(strPDFMessage);

//实体内容
strPDFMessage= "( http://www.wenhui.org)Tj\n " ;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage= "ET\n";
ConvertToByteAndAddtoStream(strPDFMessage);
streamEnd=mPDF.Length;

streamLen=streamEnd-streamStart;
strPDFMessage= "endstream\nendobj\n";
ConvertToByteAndAddtoStream(strPDFMessage);
//PDF文档的版本信息
xRefs.Add(mPDF.Length);
strPDFMessage="2 0 obj\n"+ streamLen + "\nendobj\n";
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage="3 0 obj\n< >\nendobj\n";
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage="4 0 obj\n< > >>\n";
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="/MediaBox [ 0 0 "+ pageWidth + " " + pageDepth + " ]\n>>\nendobj\n";
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage="5 0 obj\n< >\nendobj\n";
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage="6 0 obj\n< >\nendobj\n";
ConvertToByteAndAddtoStream(strPDFMessage);

streamStart=mPDF.Length;
strPDFMessage="xref\n0 7\n0000000000 65535 f \n";
for(int i=0;i

 1<xrefs.count;i++) (xrefs.count+1)+"\n="" +="" 0="" 00000="" 6="" \n";="" converttobyteandaddtostream(strpdfmessage);="" n="" r\n="" root="" strpdfmessage="trailer\n&lt;&lt;\n/Size " strpdfmessage+="xRefFormatting((long)" xrefs[i])+"="" {="" }="">&gt;\n";   
 2ConvertToByteAndAddtoStream(strPDFMessage); 
 3
 4strPDFMessage="startxref\n" + streamStart+"\n%%EOF\n";   
 5ConvertToByteAndAddtoStream(strPDFMessage);   
 6mPDF.WriteTo(pPDF.BaseStream); 
 7
 8mPDF.Close();   
 9pPDF.Close();   
10}   
11}   
12}</xrefs.count;i++)>