本文实例讲述了C#使用iTextSharp封装的PDF文件操作类。分享给大家供大家参考。具体分析如下:
这个C#代码主要讲iTextSharp中用于操作PDF文件的方法进行了再次封装,可以更加方便的访问PDF文档,可以动态生成PDF文件、添加内容、设置段落、设置字体等。
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
}
}
希望本文所述对大家的C#程序设计有所帮助。
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