如何使用C#生成PDF文件

本篇文章主要介绍了"如何使用C#生成PDF文件"，对于C#jrs看球网直播吧_低调看直播体育app软件下载_低调看体育直播感兴趣的同学可以参考一下：

我们经常需要动态将文本文件生成PDF文件，方便阅读，下面是使用C#生成PDF文件的例子。如下：

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

namespace GenPDF
{
///

/// 程序 : 从文本生成PDF文件
/// 作者 : Ken
/// 日期 : 2014-10-2
///

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

//生成PDF文件.
static StreamWriter pPDF=new StreamWriter("D:\\Test\\PDF.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);

streamStart=mPDF.Length;
strPDFMessage="BT\n/F0 " + fontSize +" Tf\n";
ConvertToByteAndAddtoStream(strPDFMessage);
yPos = pageDepth - pageMargin;
strPDFMessage=pageMargin + " " + yPos +" Td\n" ;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage= leadSize+" TL\n" ;
ConvertToByteAndAddtoStream(strPDFMessage);

strPDFMessage= "(Pramod Kumar Singh)Tj\n" ;
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage= "ET\n";
ConvertToByteAndAddtoStream(strPDFMessage);
//Get the End of the stream
streamEnd=mPDF.Length;
//得到流的长度
streamLen=streamEnd-streamStart;
strPDFMessage= "endstream\nendobj\n";
ConvertToByteAndAddtoStream(strPDFMessage);

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<
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="/Kids[\n3 0 R\n]\n";
ConvertToByteAndAddtoStream(strPDFMessage);
strPDFMessage="/Resources<> >>\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<>
{
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);
//从流中写入PDF
mPDF.WriteTo(pPDF.BaseStream);
//关闭Stream
mPDF.Close();
pPDF.Close();
}
}
}

以上就介绍了如何使用C#生成PDF文件，包括了方面的内容，希望对C#jrs看球网直播吧_低调看直播体育app软件下载_低调看体育直播有兴趣的朋友有所帮助。

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