用C#实现生成PDF文档（原码）:数据挖掘研究院( China Data Mining Research ,ChinaKDD)

用C#实现生成PDF文档（原码）:数据挖掘研究院( China Data Mining Research ,ChinaKDD): "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;
} 同徽B2B电子商务研究中心
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 ';
ConvertToByteAndAddtoStream(strPDFMessage);

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

数据挖掘商道

ConvertToByteAndAddtoStream(strPDFMessage);

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

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

xRefs.Add(mPDF.Length);
strPDFMessage='3 0 obj <</Type/Page/Parent 4 0 R/Contents 1 0 R>> endobj ';
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage='4 0 obj <</Type /Pages /Count 1 ';
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage='/Kids[ 3 0 R ] ';
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage='/Resources<</ProcSet[/PDF/Text]/Font<</F0 5 0 R>> >> '; 同徽B2B电子商务研究中心
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage='/MediaBox [ 0 0 '+ pageWidth + ' ' + pageDepth + ' ] >> endobj ';
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage='5 0 obj <</Type/Font/Subtype/Type1/BaseFont/Courier/Encoding/WinAnsiEncoding>> endobj ';
ConvertToByteAndAddtoStream(strPDFMessage);

xRefs.Add(mPDF.Length);
strPDFMessage='6 0 obj <</Type/Catalog/Pages 4 0 R>> endobj ';
ConvertToByteAndAddtoStream(strPDFMessage);

streamStart=mPDF.Length;
strPDFMessage='xref 0 7 0000000000 65535 f ';
for(int i=0;i<xRefs.Count;i++)
{
strPDFMessage+=xRefFormatting((long) xRefs[i])+' 00000 n ';
}
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage='trailer << /Size '+ (xRefs.Count+1)+' /Root 6 0 R >> ';
ConvertToByteAndAddtoStream(strPDFMessage);

strPDFMessage='startxref ' + streamStart+' %%EOF ';
ConvertToByteAndAddtoStream(strPDFMessage);

同徽B2B电子商务研究中心

mPDF.WriteTo(pPDF.BaseStream);

mPDF.Close();
pPDF.Close();
}
}"