创建pdf文件

来源：互联网发布：成品油批发价年度数据编辑：程序博客网时间：2024/05/07 20:52

   using    System;
   using    System.IO;
   using    System.Text;
   using    System.Collections;

   namespace    paladin.utility
   {
   ///    <summary>
   ///    ToPdf    的摘要说明。
   ///    </summary>
   public    class    ToPdf
   {
   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    MemoryStream    mPDF=    new    MemoryStream();

   public    ToPdf()
   {
   //
   //    TODO:    在此处添加构造函数逻辑
   //
   }

   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    public    void    CreatePdf(string    filePath)
   {
   StreamWriter    pPDF=new    StreamWriter(filePath);

   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();
   }
   }
   }