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C#版 iText7——画发票PDF（完整）
显示描述：
1、每页显示必须带有发票头、“销售方和购买方信息”
2、明细填充为：当n≤8 行时，发票总高度140mm，每条发票明细行款高度4.375mm；
当8
根据实际情况能放下“应税明细信息”和“票尾”信息后换页，注意是否为最后一行
3、超过一页，则每页显示小计显示效果：
1、只有一页的情况：
2、有两页的且刚好能放下所有明细的情况（超过一页后，开票日期下显示页数）：
代码实现：
步骤一、创建主方法，可传入需要的参数模型
public static void InvoicePage(NaturalSystemPdfModel model) //NaturalSystemPdfModel为传入的需要用到的参数模型 { //创建pdf的保存位置 //model.filePath为传入模型中存放的文件保存路径，model.kprq为开票日期，model.fileName为文件名 //model.filePath = Path.Combine(_webHostEnvironment.WebRootPath, “.pdf”);获取当前服务器下的文件路径 string outputPath = Path.Combine(model.filePath,model.kprq.ToString("yyyyMMdd"), model.fileName + ".pdf"); //判断文件夹是否存在，不存在则创建一个新的 if (!Directory.Exists(Path.Combine(model.filePath, model.kprq.ToString("yyyyMMdd")))) Directory.CreateDirectory(Path.Combine(model.filePath, model.kprq.ToString("yyyyMMdd"))); // 创建一个新的PDF文档 var cc = new PdfWriter(outputPath); //设置 PdfStream默认压缩级别。 cc.SetCompressionLevel(CompressionConstants.BEST_COMPRESSION); PdfDocument pdf = new PdfDocument(cc); model.jshjdx = MoneyToUpper(model.jshj.ToString()); //价税合计大写转换（转换方法MoneyToUpper（）） model.gmfmc = model.gmfmc == "个人" ? model.gmfmc + "（个人）" : model.gmfmc;//购方名称 字体 //model.webHost为模型中的发布服务器中的文件所在位置：IWebHostEnvironment _webHostEnvironment.WebRootPath PdfFont KT = PdfFontFactory.CreateFont(System.IO.Path.Combine(model.webHost, "fonts", "SIMKAI.TTF"), PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.PREFER_NOT_EMBEDDED); PdfFont ST = PdfFontFactory.CreateFont(System.IO.Path.Combine(model.webHost, "fonts", "SIMFANG.TTF"), PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.PREFER_NOT_EMBEDDED); PdfFont CN = PdfFontFactory.CreateFont(System.IO.Path.Combine(model.webHost, "fonts", "COUR.TTF"), PdfEncodings.IDENTITY_H, PdfFontFactory.EmbeddingStrategy.PREFER_NOT_EMBEDDED); //添加页眉页脚||或者需要每页显示的票头 //创建类PdfEventHandler，在步骤二中 PdfEventHandler handler = new PdfEventHandler(model, KT, ST, CN);//发票中的票头、购买方信息、表头都放在PdfEventHandler类中 pdf.AddEventHandler(PdfDocumentEvent.START_PAGE, handler); ComputeValue computeValue = new ComputeValue(); try { using (Document document = new Document(pdf, iText.Kernel.Geom.PageSize.A4, false)) { //document.SetMargins(0, 0, 0, 0); //默认宽210mm=8.2677英寸=595磅 //默认高29.7mm=11.6929英寸=842磅 //默认边距36磅=0.5英寸=12.7mm // 定义自定义RGB颜色（例如，红色） DeviceRgb customColor = new DeviceRgb(128, 0, 0); //发票固定高度pt：票头，ht：购买方信息，et：票尾备注，kp：开票人 float pt = 30, ht = 22, et = 20, kp = 8.5f; //下面代码中大量用到的computeValue.computeUnit()方法作用为：毫米转换磅 #region 表中列表 //添加表格 Table BodyTable = new Table(9, false); Cell cel11 = new Cell(1, 1) .SetTextAlignment(TextAlignment.CENTER) .SetWidth(computeValue.computeUnit(37)) .SetHeight(computeValue.computeUnit(4.5f)) .SetBorderRight(Border.NO_BORDER) .SetBorderBottom(Border.NO_BORDER) .SetBorderTop(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("项目名称")); Cell cel12 = new Cell(1, 2) .SetTextAlignment(TextAlignment.LEFT) .SetWidth(computeValue.computeUnit(24)) .SetBorder(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("规格型号")); Cell cel13 = new Cell(1, 1) .SetTextAlignment(TextAlignment.CENTER) .SetWidth(computeValue.computeUnit(12)) .SetBorder(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("单位")); Cell cel14 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(25)) .SetBorder(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("数量")); Cell cel15 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(25)) .SetBorder(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("单价")); Cell cel16 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(26)) .SetBorder(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("金额")); Cell cel17 = new Cell(1, 1) .SetTextAlignment(TextAlignment.CENTER) .SetBorder(Border.NO_BORDER) .SetWidth(computeValue.computeUnit(25)) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("税率/征收率")); Cell cel18 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(27)) .SetBorderLeft(Border.NO_BORDER) .SetBorderBottom(Border.NO_BORDER) .SetBorderTop(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("税额")); BodyTable.AddCell(cel11.SetBorder(new SolidBorder(customColor, 1))); BodyTable.AddCell(cel12); BodyTable.AddCell(cel13); BodyTable.AddCell(cel14); BodyTable.AddCell(cel15); BodyTable.AddCell(cel16); BodyTable.AddCell(cel17); BodyTable.AddCell(cel18.SetBorder(new SolidBorder(customColor, 1))); BodyTable.StartNewRow(); //合计小计列 //合计 Cell cel41 = new Cell(1, 2) .SetTextAlignment(TextAlignment.CENTER) .SetHeight(computeValue.computeUnit(4.5f)) .SetPaddingBottom(-5) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("合\t\t计").SetFixedLeading(11)); Cell cel42 = new Cell(1, 5) .SetTextAlignment(TextAlignment.RIGHT) .SetHeight(computeValue.computeUnit(4.5f)) .SetFont(ST) .SetFontSize(9) .Add(new Paragraph("￥" + model.hjje).SetFixedLeading(11)); Cell cel43 = new Cell(1, 2) .SetTextAlignment(TextAlignment.RIGHT) .SetHeight(computeValue.computeUnit(4.5f)) .SetFont(ST) .SetFontSize(9) .Add(new Paragraph("￥" + model.hjse).SetFixedLeading(11)); //价税合计大小写 ImageData data = ImageDataFactory.Create(Path.Combine(model.webHost, "images", "jiashuiheji.png")); Image img = new Image(data).SetWidth(15).SetHeight(15); Cell cel51 = new Cell(1, 2) .SetHeight(computeValue.computeUnit(8)) .SetWidth(computeValue.computeUnit(50)) .SetBorderBottom(Border.NO_BORDER) .SetVerticalAlignment(VerticalAlignment.MIDDLE) .SetTextAlignment(TextAlignment.CENTER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("价税合计（大写）")); Cell cel53 = new Cell(1, 4) .SetBorderLeft(Border.NO_BORDER) .SetBorderRight(Border.NO_BORDER) .SetBorderBottom(Border.NO_BORDER) .SetHeight(computeValue.computeUnit(8)) .SetVerticalAlignment(VerticalAlignment.MIDDLE) .SetTextAlignment(TextAlignment.LEFT) .Add(new Paragraph(model.jshjdx).SetFont(ST).SetFontSize(10).SetFirstLineIndent(18)) .Add(new Image(ImageDataFactory.Create(Path.Combine(model.webHost, "images", "jiashuiheji.png"))).SetWidth(15).SetHeight(15)); Cell cel55 = new Cell(1, 1) .SetBorderLeft(Border.NO_BORDER) .SetBorderRight(Border.NO_BORDER) .SetBorderBottom(Border.NO_BORDER) .SetVerticalAlignment(VerticalAlignment.MIDDLE) .SetHeight(computeValue.computeUnit(8)) .SetTextAlignment(TextAlignment.RIGHT) .Add(new Paragraph("（小写)").SetFont(KT).SetFontSize(9).SetFontColor(customColor)); Cell cel54 = new Cell(1, 2) .SetBorderLeft(Border.NO_BORDER) .SetHeight(computeValue.computeUnit(8)) .SetBorderBottom(Border.NO_BORDER) .SetVerticalAlignment(VerticalAlignment.MIDDLE) .SetTextAlignment(TextAlignment.LEFT) .Add(new Paragraph("￥" + model.jshj).SetFont(ST).SetFontSize(10)); #region 表尾 //添加表格 Table endTable = new Table(2, false); Cell cel61 = new Cell(1, 1) .SetWidth(computeValue.computeUnit(6)) .SetHeight(computeValue.computeUnit(20)) .SetVerticalAlignment(VerticalAlignment.MIDDLE) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("备注")); Cell cel62 = new Cell(1, 8) .SetTextAlignment(TextAlignment.LEFT) .SetVerticalAlignment(VerticalAlignment.MIDDLE) .SetWidth(computeValue.computeUnit(195)) .SetHeight(computeValue.computeUnit(20)) .SetFont(ST) .SetFontSize(10) .Add(new Paragraph(model.bz)); #endregion #region 开票人 // 添加发票内容 Paragraph ending = new Paragraph() .Add("开票人:") .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .SetTextAlignment(TextAlignment.LEFT); Paragraph endingname = new Paragraph() .Add( model.kpr) .SetFont(ST) .SetFontSize(10) .SetTextAlignment(TextAlignment.LEFT); #endregion //循环存放数据 int i = 0, j = model.medis.Count; float XJJE=0,XJSE=0,sumh=0,oldsumh=0; float gh = pt + ht + et + kp; bool flag=false; for (i = 0; i < j; i++) { //计算每行高度 //商品名长度 int mcleng =computeValue.GetStrLength(model.medis[i].xmmc)-1;//方法computeValue.GetStrLength()作用为获取字符串长度 int ggleng= computeValue.GetStrLength(model.medis[i].ggxh); float higth = (mcleng % 8 == 0 ? mcleng / 8 : mcleng / 8 + 1)>(ggleng % 6 == 0 ? ggleng / 6 : ggleng / 6 + 1)? (mcleng % 8 == 0 ? mcleng / 8 : mcleng / 8 + 1): (ggleng % 6 == 0 ? ggleng / 6 : ggleng / 6 + 1); sumh += higth; Cell cel121 = new Cell(1, 1) .SetTextAlignment(TextAlignment.CENTER) .SetWidth(computeValue.computeUnit(37)) .SetHeight(computeValue.computeUnit((float)(higth * 4.375))) .SetFont(ST) .SetFontSize(10) .Add(new Paragraph(model.medis[i].xmmc).SetFixedLeading(12)); Cell cel122 = new Cell(1, 2) .SetTextAlignment(TextAlignment.LEFT) .SetWidth(computeValue.computeUnit(24)) .SetHeight(computeValue.computeUnit((float)(higth * 4.375))) .SetFont(ST) .SetFontSize(10) .SetSplitCharacters(new KeepAllSplitCharacters()) .Add(new Paragraph(model.medis[i].ggxh).SetFixedLeading(12).SetWidth(computeValue.computeUnit(24))); Cell cel123 = new Cell(1, 1) .SetTextAlignment(TextAlignment.CENTER) .SetWidth(computeValue.computeUnit(12)) .SetHeight(computeValue.computeUnit((float)(higth * 4.375))) .SetFont(ST) .SetFontSize(10) .Add(new Paragraph(model.medis[i].dw).SetFixedLeading(12)); Cell cel124 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(25)) .SetHeight(computeValue.computeUnit((float)(higth * 4.375))) .SetFont(ST) .SetFontSize(10) .Add(new Paragraph(model.medis[i].sl).SetFixedLeading(12)); Cell cel125 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(25)) .SetHeight(computeValue.computeUnit((float)(higth * 4.375))) .SetFont(ST) .SetFontSize(10) .Add(new Paragraph(model.medis[i].dj).SetFixedLeading(12)); Cell cel126 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(26)) .SetHeight(computeValue.computeUnit((float)(higth * 4.375))) .SetFont(ST) .SetFontSize(10) .Add(new Paragraph(model.medis[i].je).SetFixedLeading(12)); Cell cel127 = new Cell(1, 1) .SetTextAlignment(TextAlignment.CENTER) .SetWidth(computeValue.computeUnit(25)) .SetHeight(computeValue.computeUnit((float)(higth * 4.375))) .SetFont(ST) .SetFontSize(10) .Add(new Paragraph(model.medis[i].slv).SetFixedLeading(12)); Cell cel128 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(27)) .SetHeight(computeValue.computeUnit((float)(higth * 4.375))) .SetFont(ST) .SetFontSize(10) .Add(new Paragraph(model.medis[i].se).SetFixedLeading(12)); BodyTable.AddCell(cel121.SetBorder(new SolidBorder(customColor, 1)).SetBorderRight(Border.NO_BORDER).SetBorderBottom(Border.NO_BORDER).SetBorderTop(Border.NO_BORDER)); BodyTable.AddCell(cel122.SetBorder(Border.NO_BORDER)); BodyTable.AddCell(cel123.SetBorder(Border.NO_BORDER)); BodyTable.AddCell(cel124.SetBorder(Border.NO_BORDER)); BodyTable.AddCell(cel125.SetBorder(Border.NO_BORDER)); BodyTable.AddCell(cel126.SetBorder(Border.NO_BORDER)); BodyTable.AddCell(cel127.SetBorder(Border.NO_BORDER)); BodyTable.AddCell(cel128.SetBorder(new SolidBorder(customColor, 1)).SetBorderLeft(Border.NO_BORDER).SetBorderBottom(Border.NO_BORDER).SetBorderTop(Border.NO_BORDER)); BodyTable.StartNewRow();//创建新行 // 添加分页 //不足一页或刚好一页得情况 //小计 XJJE += float.Parse(model.medis[i].je); XJSE+= float.Parse(model.medis[i].se); if (sumh <= 35&& i+1==j) { //中间高度 float nh = 140 - gh + 25; //有分页的情况 if (flag) { //中间高度加8 //小计 Cell cel411 = new Cell(1, 2) .SetTextAlignment(TextAlignment.CENTER) .SetHeight(computeValue.computeUnit(4.5f)) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .SetPaddingBottom(-5) .Add(new Paragraph("小\t\t计").SetFixedLeading(11)); Cell cel421 = new Cell(1, 5) .SetBorder(Border.NO_BORDER) .SetTextAlignment(TextAlignment.RIGHT) .SetHeight(computeValue.computeUnit(4.5f)) .SetFont(ST) .SetFontSize(9) .Add(new Paragraph("￥" + XJJE).SetFixedLeading(11)); Cell cel431 = new Cell(1, 2) .SetTextAlignment(TextAlignment.RIGHT) .SetHeight(computeValue.computeUnit(4.5f)) .SetFont(ST) .SetFontSize(9) .Add(new Paragraph("￥" + XJSE).SetFixedLeading(11)); //合计小计列 BodyTable.AddCell(cel411.SetBorder(new SolidBorder(customColor, 1)).SetBorderBottom(Border.NO_BORDER).SetBorderTop(Border.NO_BORDER).SetBorderRight(Border.NO_BORDER)); BodyTable.AddCell(cel421.SetBorder(Border.NO_BORDER)); BodyTable.AddCell(cel431.SetBorder(new SolidBorder(customColor, 1)).SetBorderLeft(Border.NO_BORDER).SetBorderBottom(Border.NO_BORDER).SetBorderTop(Border.NO_BORDER)); BodyTable.StartNewRow(); } //不够一页的情况 //合计列 BodyTable.AddCell(cel41.SetBorder(new SolidBorder(customColor, 1)).SetBorderBottom(Border.NO_BORDER).SetBorderTop(Border.NO_BORDER).SetBorderRight(Border.NO_BORDER)); BodyTable.AddCell(cel42.SetBorder(Border.NO_BORDER)); BodyTable.AddCell(cel43.SetBorder(new SolidBorder(customColor, 1)).SetBorderLeft(Border.NO_BORDER).SetBorderBottom(Border.NO_BORDER).SetBorderTop(Border.NO_BORDER)); BodyTable.StartNewRow();//新增行 //价税合计大小写 BodyTable.AddCell(cel51.SetBorder(new SolidBorder(customColor, 1))); //BodyTable.AddCell(cel52.SetBorder(new SolidBorder(customColor, 1))); BodyTable.AddCell(cel53.SetBorder(new SolidBorder(customColor, 1))); BodyTable.AddCell(cel55.SetBorder(new SolidBorder(customColor, 1))); BodyTable.AddCell(cel54.SetBorder(new SolidBorder(customColor, 1))); BodyTable.StartNewRow();//新增行 float lasth=0; if (sumh <= 8) { lasth = 8-sumh; } else if (sumh <= 12) { nh += 17.5f*1; lasth = 12 - sumh; } else if (sumh <= 16) { nh += 17.5f * 2; lasth = 16 - sumh; } else if (sumh <= 20) { nh += 17.5f * 3; lasth = 20 - sumh; } else if (sumh <= 24) { nh += 17.5f * 4; lasth = 24 - sumh; } else if (sumh <= 28) { nh += 17.5f * 5; lasth = 28 - sumh; } else if (sumh <= 32) { nh += 17.5f * 6; lasth = 32 - sumh; } else if (sumh <= 36) { nh += 17.5f * 7; lasth = 36 - sumh; } else if (sumh <= 40) { nh += 17.5f * 8; lasth = 40 - sumh; } //设置最后一行行高，因为不足一页时，最后一行可能需要占用多行行高 var bzh = computeValue.computeUnit((higth + lasth) * 4.375f); cel121.SetHeight(bzh); cel122.SetHeight(bzh); cel123.SetHeight(bzh); cel124.SetHeight(bzh); cel125.SetHeight(bzh); cel126.SetHeight(bzh); cel127.SetHeight(bzh); cel128.SetHeight(bzh); BodyTable.SetHeight(computeValue.computeUnit(nh));//给表设置高度 document.Add(BodyTable.SetFixedPosition(computeValue.computeUnit(4.5f), computeValue.computeUnit(243- nh) , computeValue.computeUnit(201))); //表尾备注 endTable.AddCell(cel61.SetBorder(new SolidBorder(customColor, 1))); endTable.AddCell(cel62.SetBorder(new SolidBorder(customColor, 1))); float b = computeValue.computeUnit(241 - 20- nh) ; document.Add(endTable.SetFixedPosition(computeValue.computeUnit(4.5f), b, computeValue.computeUnit(201))); //价税合计图片 //document.Add(img.SetFixedPosition(computeValue.computeUnit(51.5f), b + computeValue.computeUnit(24))); //开票人 document.Add(ending.SetFixedPosition(computeValue.computeUnit(18), b - computeValue.computeUnit((float)8.5), computeValue.computeUnit(183))); document.Add(endingname.SetFixedPosition(computeValue.computeUnit(29), b - computeValue.computeUnit((float)8.5), computeValue.computeUnit(183))); sumh = 0; } //分页的情况 else if (((sumh-higth >= 36) && (sumh - higth <= 39)&& i != 0 && i + 1 != j)|| (sumh>= 33)&& i + 2 == j) { //小计 Cell cel411 = new Cell(1, 2) .SetTextAlignment(TextAlignment.CENTER) .SetHeight(computeValue.computeUnit(4.5f)) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .SetPaddingBottom(-5) .Add(new Paragraph("小\t\t计").SetFixedLeading(11)); Cell cel421 = new Cell(1, 5) .SetBorder(Border.NO_BORDER) .SetTextAlignment(TextAlignment.RIGHT) .SetHeight(computeValue.computeUnit(4.5f)) .SetFont(ST) .SetFontSize(9) .Add(new Paragraph("￥" + XJJE).SetFixedLeading(11)); Cell cel431 = new Cell(1, 2) .SetTextAlignment(TextAlignment.RIGHT) .SetHeight(computeValue.computeUnit(4.5f)) .SetFont(ST) .SetFontSize(9) .Add(new Paragraph("￥" +XJSE).SetFixedLeading(11)); //合计小计列 BodyTable.AddCell(cel411.SetBorder(new SolidBorder(customColor, 1)).SetBorderBottom(Border.NO_BORDER).SetBorderTop(Border.NO_BORDER).SetBorderRight(Border.NO_BORDER)); BodyTable.AddCell(cel421.SetBorder(Border.NO_BORDER)); BodyTable.AddCell(cel431.SetBorder(new SolidBorder(customColor, 1)).SetBorderLeft(Border.NO_BORDER).SetBorderBottom(Border.NO_BORDER).SetBorderTop(Border.NO_BORDER)); BodyTable.StartNewRow(); BodyTable.AddCell(cel41.SetBorder(new SolidBorder(customColor, 1)).SetBorderTop(Border.NO_BORDER).SetBorderRight(Border.NO_BORDER)); BodyTable.AddCell(cel42.SetBorder(new SolidBorder(customColor, 1)).SetBorderLeft(Border.NO_BORDER).SetBorderTop(Border.NO_BORDER).SetBorderRight(Border.NO_BORDER)); BodyTable.AddCell(cel43.SetBorder(new SolidBorder(customColor, 1)).SetBorderLeft(Border.NO_BORDER).SetBorderTop(Border.NO_BORDER)); BodyTable.StartNewRow(); //float nh =(sumh-oldsumh)*4.375f+13.5f+38;//判断中间列表占用高度--> i * computeValue.computeUnit(10):每行数据的高度;+ computeValue.computeUnit(10):表头高度+合计行的高度；(i*15)：每行数据的行间距 float nh = (sumh) * 4.375f + 13.5f + 38; BodyTable.SetHeight(computeValue.computeUnit(nh)); BodyTable.SetBorderBottom(new SolidBorder(customColor, 1)); document.Add(BodyTable.SetFixedPosition(computeValue.computeUnit(4.5f), computeValue.computeUnit(243- nh) , computeValue.computeUnit(201))); //开票人 document.Add(ending.SetFixedPosition(computeValue.computeUnit(18), computeValue.computeUnit(243- nh- 9) , computeValue.computeUnit(183))); document.Add(endingname.SetFixedPosition(computeValue.computeUnit(29), computeValue.computeUnit(243- nh- 9) , computeValue.computeUnit(183))); //分页 document.Add(new AreaBreak()); BodyTable = new Table(9, false); #region 表头 Cell cel110 = new Cell(1, 1) .SetTextAlignment(TextAlignment.CENTER) .SetWidth(computeValue.computeUnit(37)) .SetHeight(computeValue.computeUnit(4.5f)) .SetBorderRight(Border.NO_BORDER) .SetBorderBottom(Border.NO_BORDER) .SetBorderTop(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("项目名称")); Cell cel120 = new Cell(1, 2) .SetTextAlignment(TextAlignment.LEFT) .SetWidth(computeValue.computeUnit(24)) .SetBorder(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("规格型号")); Cell cel130 = new Cell(1, 1) .SetTextAlignment(TextAlignment.CENTER) .SetWidth(computeValue.computeUnit(12)) .SetBorder(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("单位")); Cell cel140 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(25)) .SetBorder(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("数量")); Cell cel150 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(25)) .SetBorder(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("单价")); Cell cel160 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(26)) .SetBorder(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("金额")); Cell cel170 = new Cell(1, 1) .SetTextAlignment(TextAlignment.CENTER) .SetBorder(Border.NO_BORDER) .SetWidth(computeValue.computeUnit(25)) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("税率/征收率")); Cell cel180 = new Cell(1, 1) .SetTextAlignment(TextAlignment.RIGHT) .SetWidth(computeValue.computeUnit(27)) .SetBorderLeft(Border.NO_BORDER) .SetBorderBottom(Border.NO_BORDER) .SetBorderTop(Border.NO_BORDER) .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .Add(new Paragraph("税额")); BodyTable.AddCell(cel110.SetBorder(new SolidBorder(customColor, 1))); BodyTable.AddCell(cel120); BodyTable.AddCell(cel130); BodyTable.AddCell(cel140); BodyTable.AddCell(cel150); BodyTable.AddCell(cel160); BodyTable.AddCell(cel170); BodyTable.AddCell(cel180.SetBorder(new SolidBorder(customColor, 1))); BodyTable.StartNewRow(); #endregion XJJE = 0; XJSE = 0; //oldsumh = sumh; sumh = 0; flag = true; continue; } //添加页码 int n=pdf.GetNumberOfPages(); if (n>1) { for (int p = 2; p <= n; p++) { document.ShowTextAligned(new Paragraph(String .Format("共" + n + "页 第" + p+"页")).SetFontSize(10).SetFont(ST), computeValue.computeUnit(200), computeValue.computeUnit(272), p, TextAlignment.RIGHT, VerticalAlignment.TOP, 0); } } // 关闭文档 document.Close(); Console.WriteLine("PDF发票已生成：" + outputPath); } } catch (Exception e) { Console.WriteLine(e.Message); throw; } } ////// 金额转换成中文大写金额 /// /// eg:10.74 /// private static string MoneyToUpper(string LowerMoney) { string functionReturnValue = null; bool IsNegative = false; // 是否是负数 if (LowerMoney.Trim().Substring(0, 1) == "-") { // 是负数则先转为正数 LowerMoney = LowerMoney.Trim().Remove(0, 1); IsNegative = true; } string strLower = null; string strUpart = null; string strUpper = null; int iTemp = 0; // 保留两位小数 123.489→123.49 123.4→123.4 LowerMoney = Math.Round(double.Parse(LowerMoney), 2).ToString(); if (LowerMoney.IndexOf(".") > 0) { if (LowerMoney.IndexOf(".") == LowerMoney.Length - 2) { LowerMoney = LowerMoney + "0"; } } else { LowerMoney = LowerMoney + ".00"; } strLower = LowerMoney; iTemp = 1; strUpper = ""; while (iTemp <= strLower.Length) { switch (strLower.Substring(strLower.Length - iTemp, 1)) { case ".": strUpart = "圆"; break; case "0": strUpart = "零"; break; case "1": strUpart = "壹"; break; case "2": strUpart = "贰"; break; case "3": strUpart = "叁"; break; case "4": strUpart = "肆"; break; case "5": strUpart = "伍"; break; case "6": strUpart = "陆"; break; case "7": strUpart = "柒"; break; case "8": strUpart = "捌"; break; case "9": strUpart = "玖"; break; } switch (iTemp) { case 1: strUpart = strUpart + "分"; break; case 2: strUpart = strUpart + "角"; break; case 3: strUpart = strUpart + ""; break; case 4: strUpart = strUpart + ""; break; case 5: strUpart = strUpart + "拾"; break; case 6: strUpart = strUpart + "佰"; break; case 7: strUpart = strUpart + "仟"; break; case 8: strUpart = strUpart + "万"; break; case 9: strUpart = strUpart + "拾"; break; case 10: strUpart = strUpart + "佰"; break; case 11: strUpart = strUpart + "仟"; break; case 12: strUpart = strUpart + "亿"; break; case 13: strUpart = strUpart + "拾"; break; case 14: strUpart = strUpart + "佰"; break; case 15: strUpart = strUpart + "仟"; break; case 16: strUpart = strUpart + "万"; break; default: strUpart = strUpart + ""; break; } strUpper = strUpart + strUpper; iTemp = iTemp + 1; } strUpper = strUpper.Replace("零拾", "零"); strUpper = strUpper.Replace("零佰", "零"); strUpper = strUpper.Replace("零仟", "零"); strUpper = strUpper.Replace("零零零", "零"); strUpper = strUpper.Replace("零零", "零"); strUpper = strUpper.Replace("零角零分", "整"); strUpper = strUpper.Replace("零分", "整"); strUpper = strUpper.Replace("零角", "零"); strUpper = strUpper.Replace("零亿零万零圆", "亿圆"); strUpper = strUpper.Replace("亿零万零圆", "亿圆"); strUpper = strUpper.Replace("零亿零万", "亿"); strUpper = strUpper.Replace("零万零圆", "万圆"); strUpper = strUpper.Replace("零亿", "亿"); strUpper = strUpper.Replace("零万", "万"); strUpper = strUpper.Replace("零圆", "圆"); strUpper = strUpper.Replace("零零", "零"); Console.WriteLine("零角零分"); // 对壹圆以下的金额的处理 if (strUpper.Substring(0, 1) == "圆") { strUpper = strUpper.Substring(1, strUpper.Length - 1); } if (strUpper.Substring(0, 1) == "零") { strUpper = strUpper.Substring(1, strUpper.Length - 1); } if (strUpper.Substring(0, 1) == "角") { strUpper = strUpper.Substring(1, strUpper.Length - 1); } if (strUpper.Substring(0, 1) == "分") { strUpper = strUpper.Substring(1, strUpper.Length - 1); } if (strUpper.Substring(0, 1) == "整") { strUpper = "零圆整"; } functionReturnValue = strUpper; if (IsNegative == true) { return "负" + functionReturnValue; } else { return string.Format(functionReturnValue, Encoding.GetEncoding("GB2312")); } } public class ComputeValue { /// /// 毫米转换磅 /// /// /// public float computeUnit(float millimetre) { return millimetre / 10 / 2.54f * 72; } /// /// 获取字符串长度 /// /// /// public int GetStrLength(string str) { double length = 0; str = str.Replace(" ", ""); for (int i = 0; i < str.Length; i++) { if (str[i] >= 0x4E00 && str[i] <= 0x9FA5) { length += 1; } else { length += 0.5; } } return (int)Math.Ceiling(length); } } 步骤二：创建PdfEventHandler类：
////// 需要继承IEventHandler /// public class PdfEventHandler : IEventHandler { private NaturalSystemPdfModel _model; private PdfFont KT; private PdfFont ST; private PdfFont CN; //构造方法：带入模型以及字体 public PdfEventHandler(NaturalSystemPdfModel model, PdfFont kt, PdfFont st, PdfFont cn) { _model = model; KT = kt; ST = st; CN = cn; } public void HandleEvent(Event e) { PdfDocumentEvent docEvent = (PdfDocumentEvent)e; PdfDocument pdfDoc = docEvent.GetDocument(); PdfPage page = docEvent.GetPage(); PdfCanvas pdfCanvas = new PdfCanvas(page.NewContentStreamBefore(), page.GetResources(), pdfDoc); Rectangle pageSize = page.GetPageSize(); ComputeValue computeValue = new ComputeValue(); // 定义自定义RGB颜色（例如，红色） DeviceRgb customColor = new DeviceRgb(128, 0, 0); Canvas canvas = new Canvas(pdfCanvas, pageSize); #region 票头 #region 双横线 //添加横线 pdfCanvas.MoveTo(computeValue.computeUnit(141), computeValue.computeUnit(278.5f)); pdfCanvas.LineTo(computeValue.computeUnit(69), computeValue.computeUnit(278.5f)); pdfCanvas.SetStrokeColor(new DeviceRgb(128, 0, 0)); pdfCanvas.MoveTo(computeValue.computeUnit(141), computeValue.computeUnit(277.5f)); pdfCanvas.LineTo(computeValue.computeUnit(69), computeValue.computeUnit(277.5f)); pdfCanvas.SetStrokeColor(new DeviceRgb(128, 0, 0)); pdfCanvas.ClosePathStroke(); #endregion #region 票头左边 二维码、标签码 // 添加动态二维码 Image EWM = new Image(ImageDataFactory.Create(_model.qrCode)) .SetWidth(computeValue.computeUnit(20)) .SetHeight(computeValue.computeUnit(20)); canvas.Add(EWM.SetFixedPosition(1, computeValue.computeUnit(7), computeValue.computeUnit(271))); //二维码中间的“税”字图标 Image S = new Image(ImageDataFactory.Create(System.IO.Path.Combine(_model.webHost, "images", "Shui.png"))) .SetWidth(computeValue.computeUnit(4)) .SetHeight(computeValue.computeUnit(4)); canvas.Add(S.SetFixedPosition(1, computeValue.computeUnit(15), computeValue.computeUnit((float)279))); //Image EWM = new BarcodeQRCode("", 54, 56, null); //添加标签 //Image BQM = new Image(ImageDataFactory.Create("E://111.png")) // .SetWidth(computeValue.computeUnit(28)) // .SetHeight(computeValue.computeUnit(20)); //canvas.Add(BQM.SetFixedPosition(1, computeValue.computeUnit(29), computeValue.computeUnit(271))); #endregion #region 票头文字及印章 // 添加发票内容 Paragraph heading = new Paragraph(_model.type) .SetTextAlignment(TextAlignment.CENTER) .SetFont(KT) .SetFontColor(customColor) .SetFontSize(19); if (_model.type.Contains("增值税")) { canvas.Add(heading.SetFixedPosition(computeValue.computeUnit(56), computeValue.computeUnit(280.35f), computeValue.computeUnit(100))); } else { canvas.Add(heading.SetFixedPosition(computeValue.computeUnit(72), computeValue.computeUnit(280.35f), computeValue.computeUnit(70))); } // 添加发票章图片./Images/fapiaozhang.png Image stamp = new Image(ImageDataFactory.Create(System.IO.Path.Combine(_model.webHost, "images", "fapiaozhang.png"))) .SetWidth(computeValue.computeUnit(28)) .SetHeight(computeValue.computeUnit(20)); canvas.Add(stamp.SetFixedPosition(1, computeValue.computeUnit(92), computeValue.computeUnit(269))); #endregion #region 票头右上角信息 // 发票号码: Paragraph invoiceInfo_Num = new Paragraph() .Add("发票号码:") .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .SetTextAlignment(TextAlignment.LEFT); canvas.Add(invoiceInfo_Num.SetFixedPosition(computeValue.computeUnit(155), computeValue.computeUnit(280.65f), computeValue.computeUnit(19.06f))); Paragraph invoiceInfo_Numc = new Paragraph() .Add(_model.fphm) .SetFont(ST) .SetFontSize(9) .SetTextAlignment(TextAlignment.LEFT); canvas.Add(invoiceInfo_Numc.SetFixedPosition(computeValue.computeUnit(170), computeValue.computeUnit(280.65f), computeValue.computeUnit(33.36f))); // 开票日期: Paragraph invoiceInfo_Date = new Paragraph() .Add("开票日期: ") .SetFont(KT) .SetFontSize(9) .SetFontColor(customColor) .SetTextAlignment(TextAlignment.LEFT); canvas.Add(invoiceInfo_Date.SetFixedPosition(computeValue.computeUnit(155), computeValue.computeUnit(274.5f), computeValue.computeUnit(19.06f))); Paragraph invoiceInfo_Datec = new Paragraph() .Add(_model.kprq.ToString("yyyy年MM月dd日")) .SetFont(ST) .SetFontSize(9) .SetTextAlignment(TextAlignment.LEFT); canvas.Add(invoiceInfo_Datec.SetFixedPosition(computeValue.computeUnit(170), computeValue.computeUnit(274.5f), computeValue.computeUnit(33.36f))); #endregion #endregion #region 购买方信息 //添加表格 Table HeadTable = new Table(4, false); Cell cel01 = new Cell(1, 1) .SetTextAlignment((TextAlignment)TextAlignment.CENTER) .SetWidth(computeValue.computeUnit(6)) .SetHeight(computeValue.computeUnit(22)) .Add(new Paragraph("购买方信息").SetFixedLeading(12).SetFontColor(customColor).SetFont(KT).SetFontSize(9).SetFontColor(customColor)); Cell cel02 = new Cell(1, 1) .SetTextAlignment(TextAlignment.LEFT) .SetVerticalAlignment(VerticalAlignment.MIDDLE) .SetWidth(computeValue.computeUnit(94.5f)) .SetHeight(computeValue.computeUnit(22)) .Add(new Paragraph("名称:").SetFontColor(customColor).SetFont(KT).SetFontSize(9).SetFontColor(customColor).Add(new Text(_model.gmfmc).SetFontSize(10).SetFont(ST).SetFontColor(ColorConstants.BLACK))) .Add(new Paragraph("统一社会信用代码/纳税人识别号:").SetFontColor(customColor).SetFont(KT).SetFontSize(9).SetFontColor(customColor).Add(new Text(_model.gmfnsrsbh).SetFontSize(10).SetFont(ST).SetFontColor(ColorConstants.BLACK))); Cell cel03 = new Cell(1, 1) .SetTextAlignment(TextAlignment.CENTER) .SetWidth(computeValue.computeUnit(6)) .SetHeight(computeValue.computeUnit(22)) .Add(new Paragraph("销售方信息").SetFixedLeading(12).SetFontColor(customColor).SetFont(KT).SetFontSize(9).SetFontColor(customColor)); Cell cel04 = new Cell(1, 1) .SetTextAlignment(TextAlignment.LEFT) .SetVerticalAlignment(VerticalAlignment.MIDDLE) .SetWidth(computeValue.computeUnit(94.5f)) .SetHeight(computeValue.computeUnit(22)) .Add(new Paragraph("名称:").SetFontColor(customColor).SetFont(KT).SetFontSize(9).SetFontColor(customColor).Add(new Text(_model.xsfmc).SetFontSize(10).SetFont(ST).SetFontColor(ColorConstants.BLACK))) .Add(new Paragraph("统一社会信用代码/纳税人识别号:").SetFontColor(customColor).SetFont(KT).SetFontSize(9).SetFontColor(customColor).Add(new Text(_model.xsfnsrsbh).SetFontSize(10).SetFont(ST).SetFontColor(ColorConstants.BLACK))); HeadTable.AddCell(cel01.SetBorder(new SolidBorder(customColor, 1))); HeadTable.AddCell(cel02.SetBorder(new SolidBorder(customColor, 1))); HeadTable.AddCell(cel03.SetBorder(new SolidBorder(customColor, 1))); HeadTable.AddCell(cel04.SetBorder(new SolidBorder(customColor, 1))); canvas.Add(HeadTable.SetFixedPosition(computeValue.computeUnit(4.5f), computeValue.computeUnit(243), computeValue.computeUnit(201))); #endregion // 添加页脚页码 //if (pdfDoc.GetNumberOfPages() > 1) //{ // #region 页眉 // Paragraph p = new Paragraph("共" + pdfDoc.GetNumberOfPages() + "页 第" + pdfDoc.GetPageNumber(page) + "页") // .SetFontSize(9) // .SetFont(ST) // .SetFixedPosition(computeValue.computeUnit(186), computeValue.computeUnit(266.5f), computeValue.computeUnit(141)); // canvas.Add(p); // #endregion //} //canvas.Add(p); canvas.Close(); } } 完成！（创作不易，点赞鼓励_）
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- 原文地址：https://blog.csdn.net/qq_51462774/article/details/139662882