PdfSharp一款开源的用于创建，操作PDF文档的.Net类库，本文以一个简单的小例子，简述如何通过PdfSharp进行创建PDF文档，仅供学习分享使用，如有不足之处，还请指正。
/// /// 生成Pdf /// /// "filepath"[ span]=""> /// "bo"[ span]=""> /// public bool GeneratePdf(string filePath, PdfBo bo) { int margin_left_right = 30;//左右边距 int margin_top_bottom = 30;//上下边距 //1. 定义文档对象 PdfDocument document = new PdfDocument(); //2. 新增一页 PdfPage page = document.AddPage(); // 设置纸张大小 page.Size = PageSize.A4; //3. 创建一个绘图对象 XGraphics gfx = XGraphics.FromPdfPage(page); XFont font = new XFont("华文宋体", 40, XFontStyle.Bold); //定制化内容开始 int cur_x = 0 + margin_left_right; int cur_y = 0 + margin_top_bottom; //标题1 gfx.DrawString(bo.Head1, font, XBrushes.Red, new XRect(cur_x, cur_y, page.Width-2*cur_x, 80), XStringFormats.Center); //序号 font = new XFont("华文宋体", 12, XFontStyle.Regular); cur_y = cur_y + 80; gfx.DrawString(bo.No, font, XBrushes.Black, new XRect(cur_x, cur_y, 100, 20), XStringFormats.CenterLeft); //密级 cur_x = cur_x + 200; gfx.DrawString(string.Format("密级[{0}]",bo.Private), font, XBrushes.Black, new XRect(cur_x, cur_y, 100, 20), XStringFormats.CenterLeft); //缓级 cur_x = cur_x + 100; gfx.DrawString(string.Format("缓级[{0}]", bo.Speed), font, XBrushes.Black, new XRect(cur_x, cur_y, 100, 20), XStringFormats.CenterLeft); //签发人 cur_x = cur_x + 100; gfx.DrawString(string.Format("签发人：{0}", bo.Person), font, XBrushes.Black, new XRect(cur_x, cur_y, 100, 20), XStringFormats.CenterLeft); //一条横线 cur_x = 0 + margin_left_right; cur_y = cur_y + 20; XPen pen = new XPen(XColor.FromKnownColor(XKnownColor.Black), 1); gfx.DrawLine(pen, cur_x, cur_y, page.Width-cur_x, cur_y+2); //标题2 font = new XFont("华文宋体", 20, XFontStyle.Regular); cur_y = cur_y + 10; gfx.DrawString(bo.Head2, font, XBrushes.Black, new XRect(cur_x, cur_y, page.Width-2*cur_x, 40), XStringFormats.Center); //抬头 font = new XFont("华文宋体", 15, XFontStyle.Bold); cur_y = cur_y + 40; gfx.DrawString(bo.Title, font, XBrushes.Black, new XRect(cur_x, cur_y, page.Width, 40), XStringFormats.CenterLeft); //正文 ，自动换行 cur_y = cur_y + 40; XTextFormatter tf = new XTextFormatter(gfx); font = new XFont("华文宋体", 12, XFontStyle.Regular); //测量当前内容下，一行可以多少个汉字 int cnt = 0; int height = 0; for (int i = 0; i < bo.Content.Length; i++) { XSize xsize=gfx.MeasureString(bo.Content.Substring(0,i+1), font, XStringFormats.TopLeft); double width = xsize.Width; if (width >= page.Width - 2 * cur_x) { cnt = i; //表示一行可以放多少个汉字。 height =(int) xsize.Height; break; } } cnt = cnt > 0 ? cnt : bo.Content.Length;//每一行多少汉字 string[] arrContent = bo.Content.Split('\n'); string new_content = ""; int total_lines = 0; foreach (string content in arrContent) { if (content.Length <= cnt) { new_content+=string.Format("{0}\n",content); total_lines++; } else { string tmpContent = content; int lines = content.Length / cnt + 1; for (int j = 0; j < lines; j++) { tmpContent = tmpContent.Insert(j * cnt, "\n"); total_lines++; } new_content += string.Format("{0}\n", tmpContent); } } int num = new_content.Length - new_content.Replace("\r", "").Length; //计算矩形 XRect rect = new XRect(cur_x, cur_y, page.Width - 2 * cur_x, (total_lines+num)*(height+2)); tf.DrawString(new_content, font, XBrushes.Black, rect, XStringFormats.TopLeft); //主题词 cur_y = cur_y + (total_lines + num) * (height + 2) + 20; font = new XFont("华文宋体", 12, XFontStyle.Bold); gfx.DrawString(string.Format("主题词：{0}",bo.Keyword), font, XBrushes.Black, new XRect(cur_x, cur_y, page.Width, 40), XStringFormats.CenterLeft); //再加一条横线 cur_y = cur_y + 40; gfx.DrawLine(pen, cur_x, cur_y, page.Width - cur_x, cur_y + 2); cur_y = cur_y + 2; font = new XFont("华文宋体", 10, XFontStyle.Regular); gfx.DrawString(string.Format("{0}{1}",bo.Company, bo.Dept), font, XBrushes.Black, new XRect(cur_x, cur_y, page.Width-2*cur_x, 40), XStringFormats.CenterLeft); gfx.DrawString(DateTime.Now.ToString("yyyy 年 MM 月 dd 日 印发"), font, XBrushes.Black, new XRect(cur_x, cur_y, page.Width-2*cur_x, 40), XStringFormats.CenterRight); //水印开始 font = new XFont("华文宋体", 20, XFontStyle.BoldItalic); // 计算长度 var size = gfx.MeasureString(bo.Watermark, font); // 定义旋转中心 gfx.TranslateTransform(page.Width / 2, page.Height / 2); gfx.RotateTransform(-Math.Atan(page.Height / page.Width) * 180 / Math.PI); gfx.TranslateTransform(-page.Width / 2, -page.Height / 2); // 字符样式 var format = new XStringFormat(); format.Alignment = XStringAlignment.Near; format.LineAlignment = XLineAlignment.Near; //画刷 XBrush brush = new XSolidBrush(XColor.FromArgb(128, 255, 0, 0)); for (int i = 0; i < 3; i++) { gfx.DrawString(bo.Watermark, font, brush, new XPoint((page.Width - size.Width) / (1.5+i*0.5), (page.Height - size.Height) / (1.5 + i * 0.5)), format); } //水印结束 //6. 保存文档 document.Save(filePath); return true; }
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