C#生成PDF文档，读取TXT文件内容

using System.IO;
using iTextSharp.text;
using iTextSharp.text.pdf;
//需要在项目里引用ICSharpCode.SharpZipLib.dll和itextsharp.dll
public string TxtFilePath;
public string SavePdfPath;//保存PDF的路径

#region 读取TXT内容
private string ReadXieyi(string FilePath)
{
string xieyi = "";
FileInfo fi = new FileInfo(FilePath);
StreamReader sr = fi.OpenText();
xieyi = sr.ReadToEnd();
sr.Close();
return xieyi;
}
#endregion
#region 创建PDF文档方法
private void zscsc()
{
Document document = new Document(PageSize.A4);

try
{
//<appSettings>
// <add key="TxtFilePath" value="config/pubcode/"/>
//<!-- 在WEBCOFIG里面加上的节点( value值是WebUI下的config/pubcode/)包文件保存在指定的文件下 -->
//<appSettings>
string name = Online.WebUI.AccountController.LoginName + "_" + _pic_id + ".pdf";
SavePdfPath = AppDomain.CurrentDomain.BaseDirectory.ToString() + ConfigurationSettings.AppSettings["SavePdfPath"] + name;
// object filename = "C://" + name; //filename,文件保存路径
PdfWriter writer = PdfWriter.getInstance(document, new FileStream(SavePdfPath.ToString(), FileMode.Create));

document.addTitle("图片授权协议");
document.addAuthor("Quanjing.COM");
document.addHeader("Expires", "0");
document.Open();

BaseFont bfSun = BaseFont.createFont(@"c:\windows\fonts\SIMKAI.TTF", BaseFont.IDENTITY_H, false); //调用的字体
Font font = new Font(bfSun, 15);

String text = " 图片授权协议\n\n";
document.Add(new Paragraph(text, font));

//<appSettings>
// <add key="TxtFilePath" value="config/pubcode/xieyi.txt"/>
//<!-- 在WEBCOFIG里面加上的节点( value值是WebUI下的config/pubcode/xieyi.txt)这样的好处是:如果TXT的名称有改动,直接更改webconfig就行了 -->
//<appSettings>
TxtFilePath = AppDomain.CurrentDomain.BaseDirectory.ToString() + ConfigurationSettings.AppSettings["TxtFilePath"];

font = new Font(bfSun, 10);
text = ReadXieyi(TxtFilePath); //(@"C:\xieyi.txt");读取TXT文件的路径" 图片授权TXT文件协议内容";
document.Add(new Paragraph(text, font));

//插入图片
string strCatalogId;
DataTable dt = Online.Business.Production.bizDownPro.GetCatalogID(_pic_id);
strCatalogId = dt.Rows[0][0].ToString();
string FileNameUrl = "http://images.com/" + strCatalogId.ToLower() + "/thu/" + _pic_id.ToLower() + ".jpg";// "http://images.com/west004/thu/babf00254.jpg";//图片所在路径
iTextSharp.text.Image jpeg = iTextSharp.text.Image.getInstance(new Uri(FileNameUrl));
document.Add(new Paragraph("\n\n授权图片：", font));
document.Add(jpeg);

//插入图片编号
document.Add(new Paragraph("\n图片编号:"+ _pic_id, font));
string ActivateCode;
ActivateCode = _pic_id + Online.WebUI.AccountController.LoginName; //用图片编号加上登陆名生成MD5编码,只取前25位
string Md5Code;
Md5Code = System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(ActivateCode, "MD5").ToLower().Substring(0, 20); //加密MD5，只取前20位//"QJ-QQQQW-EEEER-TTTTY-UUUUN";
string code;
code = Md5Code.Substring(0, 5);//每5位之间用"-"分开
code = code + "-" + Md5Code.Substring(5, 5);
code = code + "-" + Md5Code.Substring(10, 5);
code = code + "-" + Md5Code.Substring(15, 5);
code = "QJ-" + code.ToString().ToUpper();
document.Add(new Paragraph("\n授权码："+ code, font));//code是授权码
}

catch (DocumentException de)
{
Response.Write(de.Message);
}
catch (IOException ioe)
{
Response.Write(ioe.Message);
}
document.Close();
}
#endregion
//按钮事件
protected void Button2_Click(object sender, EventArgs e)
{
string name = Online.WebUI.AccountController.LoginName + "_" + _pic_id + ".pdf";
SavePdfPath = AppDomain.CurrentDomain.BaseDirectory.ToString() + ConfigurationSettings.AppSettings["SavePdfPath"] + name;
if (!File.Exists(SavePdfPath.ToString()))
{
zscsc();//创建PDF文档
ReadDownData();//下载TXT文件
}
else
{
ReadDownData();//下载PDF文件
}
}

//读取TXT文件并下载 PDF文件
public void ReadDownData()
{
string name = Online.WebUI.AccountController.LoginName + "_" + _pic_id + ".pdf";
SavePdfPath = AppDomain.CurrentDomain.BaseDirectory.ToString() + ConfigurationSettings.AppSettings["SavePdfPath"] + name;
//读取文件，并写入到客户端响应
FileStream fs = new FileStream(SavePdfPath.ToString(), FileMode.Open, FileAccess.Read);

byte[] b = new Byte[fs.Length];
fs.Read(b, 0, b.Length);
fs.Flush();
fs.Close();
//File.Delete(filename.ToString()); 下载之后不执行删除
Response.Clear();
Response.ClearHeaders();
Response.Buffer = false;
Response.ContentType = "application/octet-stream";//ContentType;
Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(name, System.Text.Encoding.UTF8));
Response.AppendHeader("Content-Length", b.Length.ToString());
Response.OutputStream.Write(b, 0, b.Length);
Response.Flush();
Response.End();
}

转载 http://www.idai.com.cn/blog/article.asp?id=489