C#使用iTextSharp封装的PDF文件操纵类实例

时间:2022-02-28 07:41:22

这个C#代码主要讲iTextSharp顶用于操纵PDF文件的要领进行了再次封装,,可以越发便利的访谒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文档操纵类 /// </summary> //------------------挪用-------------------------- //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 结构函数 /// <summary> /// 结构函数 /// </summary> public PDFOperation() { rect = PageSize.A4; document = new Document(rect); } /// <summary> /// 结构函数 /// </summary> /// <param>页面巨细(如"A4")</param> public PDFOperation(string type) { SetPageSize(type); document = new Document(rect); } /// <summary> /// 结构函数 /// </summary> /// <param>页面巨细(如"A4")</param> /// <param>内容距左边框距离</param> /// <param>内容距右边框距离</param> /// <param>内容距上边框距离</param> /// <param>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; //文档巨细 private Document document;//文档东西 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>字体巨细</param> public void SetFont(float size) { font = new Font(basefont, size); } #endregion #region 设置页面巨细 /// <summary> /// 设置页面巨细 /// </summary> /// <param>页面巨细(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>文档相关信息(如路径,打开方法等)</param> public void GetInstance(Stream os) { PdfWriter.GetInstance(document, os); } #endregion #region 打开文档东西 /// <summary> /// 打开文档东西 /// </summary> /// <param>文档相关信息(如路径,打开方法等)</param> public void Open(Stream os) { GetInstance(os); document.Open(); } #endregion #region *打开的文档 /// <summary> /// *打开的文档 /// </summary> public void Close() { document.Close(); } #endregion #region 添加段落 /// <summary> /// 添加段落 /// </summary> /// <param>内容</param> /// <param>字体巨细</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>内容</param> /// <param>字体巨细</param> /// <param>对齐方法(1为居中,0为居左,2为居右)</param> /// <param>段后空行数(0为默认值)</param> /// <param>段前空行数(0为默认值)</param> /// <param>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>图片路径</param> /// <param>对齐方法(1为居中,0为居左,2为居右)</param> /// <param>图片宽(0为默认值,如果宽度大于页宽将按比率缩放)</param> /// <param>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>链接文字</param> /// <param>字体巨细</param> /// <param>链接地点</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>链接文字</param> /// <param>字体巨细</param> /// <param>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 } }