C#代码实现PDF文档操作类

2019-10-29 21:36:51

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本篇文章给大家介绍使用pdf文档操作C#代码，本文代码非常简单，代码附有注释，需要注意的是：需要添加itextsharp.dll引用才可以正常通过编译，感兴趣的朋友可以参考下

本文纯干货，贴上PDF文档操作类C#代码，需要添加iTextSharp.dll引用才可以正常通过编译。

废话不多说了，直接给大家贴代码了。

代码如下：

using System.IO;

using iTextSharp.text;

using iTextSharp.text.pdf;

namespace DotNet.Utilities

{

/// <summary>

/// PDF文档操作类

/// </summary>

//------------------------------------调用--------------------------------------------

//PDFOperation pdf = new PDFOperation();

//pdf.Open(new FileStream(path, FileMode.Create));

//pdf.SetBaseFont(@"C:/Windows/Fonts/SIMHEI.TTF");

//pdf.AddParagraph("测试文档（生成时间：" + DateTime.Now + "）", 15, 1, 20, 0, 0);

//pdf.Close();

//-------------------------------------------------------------------------------------

public class PDFOperation

{

  #region 构造函数

  /// <summary>

  /// 构造函数

  /// </summary>

  public PDFOperation()

  {

   rect = PageSize.A4;

   document = new Document(rect);

  }

  /// <summary>

  /// 构造函数

  /// </summary>

  /// <param name="type">页面大小(如"A4")</param>

  public PDFOperation(string type)

  {

   SetPageSize(type);

   document = new Document(rect);

  }

  /// <summary>

  /// 构造函数

  /// </summary>

  /// <param name="type">页面大小(如"A4")</param>

  /// <param name="marginLeft">内容距左边框距离</param>

  /// <param name="marginRight">内容距右边框距离</param>

  /// <param name="marginTop">内容距上边框距离</param>

  /// <param name="marginBottom">内容距下边框距离</param>

  public PDFOperation(string type, float marginLeft, float marginRight, float marginTop, float marginBottom)

  {

   SetPageSize(type);

   document = new Document(rect, marginLeft, marginRight, marginTop, marginBottom);

  }

  #endregion

  #region 私有字段

  private Font font;

  private Rectangle rect; //文档大小

  private Document document;//文档对象

  private BaseFont basefont;//字体

  #endregion

  #region 设置字体

  /// <summary>

  /// 设置字体

  /// </summary>

  public void SetBaseFont(string path)

  {

   basefont = BaseFont.CreateFont(path, BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);

  }

  /// <summary>

  /// 设置字体

  /// </summary>

  /// <param name="size">字体大小</param>

  public void SetFont(float size)

  {

   font = new Font(basefont, size);

  }

  #endregion

  #region 设置页面大小

  /// <summary>

  /// 设置页面大小

  /// </summary>

  /// <param name="type">页面大小(如"A4")</param>

  public void SetPageSize(string type)

  {

   switch (type.Trim())

   {

    case "A4":

     rect = PageSize.A4;

     break;

    case "A8":

     rect = PageSize.A8;

     break;

   }

  }

  #endregion

  #region 实例化文档

  /// <summary>

  /// 实例化文档

  /// </summary>

  /// <param name="os">文档相关信息（如路径，打开方式等）</param>

  public void GetInstance(Stream os)

  {

   PdfWriter.GetInstance(document, os);

  }

  #endregion

  #region 打开文档对象

  /// <summary>

  /// 打开文档对象

  /// </summary>

  /// <param name="os">文档相关信息（如路径，打开方式等）</param>

  public void Open(Stream os)

  {

   GetInstance(os);

   document.Open();

  }

  #endregion

  #region 关闭打开的文档

  /// <summary>

  /// 关闭打开的文档

  /// </summary>

  public void Close()

  {

   document.Close();

  }

  #endregion

  #region 添加段落

  /// <summary>

  /// 添加段落

  /// </summary>

  /// <param name="content">内容</param>

  /// <param name="fontsize">字体大小</param>

  public void AddParagraph(string content, float fontsize)

  {

   SetFont(fontsize);

   Paragraph pra = new Paragraph(content, font);

   document.Add(pra);

  }

  /// <summary>

  /// 添加段落

  /// </summary>

  /// <param name="content">内容</param>

  /// <param name="fontsize">字体大小</param>

  /// <param name="Alignment">对齐方式（1为居中，0为居左，2为居右）</param>

  /// <param name="SpacingAfter">段后空行数（0为默认值）</param>

  /// <param name="SpacingBefore">段前空行数（0为默认值）</param>

  /// <param name="MultipliedLeading">行间距（0为默认值）</param>

  public void AddParagraph(string content, float fontsize, int Alignment, float SpacingAfter, float SpacingBefore, float MultipliedLeading)

  {

   SetFont(fontsize);

   Paragraph pra = new Paragraph(content, font);

   pra.Alignment = Alignment;

   if (SpacingAfter != 0)

   {

    pra.SpacingAfter = SpacingAfter;

   }

   if (SpacingBefore != 0)

   {

    pra.SpacingBefore = SpacingBefore;

   }

   if (MultipliedLeading != 0)

   {

    pra.MultipliedLeading = MultipliedLeading;

   }

   document.Add(pra);

  }

  #endregion

  #region 添加图片

  /// <summary>

  /// 添加图片

  /// </summary>

  /// <param name="path">图片路径</param>

  /// <param name="Alignment">对齐方式（1为居中，0为居左，2为居右）</param>

  /// <param name="newWidth">图片宽（0为默认值，如果宽度大于页宽将按比率缩放）</param>

  /// <param name="newHeight">图片高</param>

  public void AddImage(string path, int Alignment, float newWidth, float newHeight)

  {

   Image img = Image.GetInstance(path);

   img.Alignment = Alignment;

   if (newWidth != 0)

   {

    img.ScaleAbsolute(newWidth, newHeight);

   }

   else

   {

    if (img.Width > PageSize.A4.Width)

    {

     img.ScaleAbsolute(rect.Width, img.Width * img.Height / rect.Height);

    }

   }

   document.Add(img);

  }

  #endregion

  #region 添加链接、点

  /// <summary>

  /// 添加链接

  /// </summary>

  /// <param name="Content">链接文字</param>

  /// <param name="FontSize">字体大小</param>

  /// <param name="Reference">链接地址</param>

  public void AddAnchorReference(string Content, float FontSize, string Reference)

  {

   SetFont(FontSize);

   Anchor auc = new Anchor(Content, font);

   auc.Reference = Reference;

   document.Add(auc);

  }

  /// <summary>

  /// 添加链接点

  /// </summary>

  /// <param name="Content">链接文字</param>

  /// <param name="FontSize">字体大小</param>

  /// <param name="Name">链接点名</param>

  public void AddAnchorName(string Content, float FontSize, string Name)

  {

   SetFont(FontSize);

   Anchor auc = new Anchor(Content, font);

   auc.Name = Name;

   document.Add(auc);

  }

  #endregion

}

}