用C#实现生成PDF文档(附源码)

用C#实现生成PDF文档(附源码) 收藏 //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 "; 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 " ; 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>> >> "; 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); mPDF.WriteTo(pPDF.BaseStream); mPDF.Close(); pPDF.Close(); } } }