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<</Type/Page/Parent 4 0 R/Contents 1 0 R>>/nendobj/n"; ConvertToByteAndAddtoStream(strPDFMessage); xRefs.Add(mPDF.Length); strPDFMessage="4 0 obj/n<</Type /Pages /Count 1/n"; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="/Kids[/n3 0 R/n]/n"; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="/Resources<</ProcSet[/PDF/Text]/Font<</F0 5 0 R>> >>/n"; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="/MediaBox [ 0 0 "+ pageWidth + " " + pageDepth + " ]/n>>/nendobj/n"; ConvertToByteAndAddtoStream(strPDFMessage); xRefs.Add(mPDF.Length); strPDFMessage="5 0 obj/n<</Type/Font/Subtype/Type1/BaseFont/Courier/Encoding/WinAnsiEncoding>>/nendobj/n"; ConvertToByteAndAddtoStream(strPDFMessage); xRefs.Add(mPDF.Length); strPDFMessage="6 0 obj/n<</Type/Catalog/Pages 4 0 R>>/nendobj/n"; ConvertToByteAndAddtoStream(strPDFMessage); streamStart=mPDF.Length; strPDFMessage="xref/n0 7/n0000000000 65535 f /n"; for(int i=0;i<xRefs.Count;i++) { strPDFMessage+=xRefFormatting((long) xRefs[i])+" 00000 n /n"; } ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="trailer/n<</n/Size "+ (xRefs.Count+1)+"/n/Root 6 0 R/n>>/n"; ConvertToByteAndAddtoStream(strPDFMessage); strPDFMessage="startxref/n" + streamStart+"/n%%EOF/n"; ConvertToByteAndAddtoStream(strPDFMessage); mPDF.WriteTo(pPDF.BaseStream); mPDF.Close(); pPDF.Close(); } } }