使用itextsharp将多个图像转换为多个页面PDF

我需要使用模板 将图像转换为PDF 。 我可以使用itextsharp创建一个页面PDF。 假设1图像为1页PDF 。 当我有多个图像时会出现问题。 如何使用预定义模板创建多个页面PDF。 以下是我的代码：

public static string CreatePDFDocument(string docname, string imagePath, string mediaField) { PdfReader pdfReader = null; string pdfPortrait = ConfigurationManager.AppSettings["PdfPortraitTemplate"]; string pdfLandscape = ConfigurationManager.AppSettings["PdfLandscapeTemplate"]; iTextSharp.text.Image instanceImg = iTextSharp.text.Image.GetInstance(imagePath); string filename = ConfigurationManager.AppSettings["LocalFolder"] + docname + ".pdf"; FileStream pdfOutputFile = new FileStream(filename, FileMode.Create); if (instanceImg.ScaledHeight >= instanceImg.ScaledWidth) { pdfReader = new PdfReader(pdfPortrait); } else { pdfReader = new PdfReader(pdfLandscape); } PdfStamper pdfStamper = null; pdfStamper = new PdfStamper(pdfReader, pdfOutputFile); AcroFields testForm = pdfStamper.AcroFields; testForm.SetField("MediaField", mediaField); PdfContentByte overContent = pdfStamper.GetOverContent(1); IList fieldPositions = testForm.GetFieldPositions("ImageField"); if (fieldPositions == null || fieldPositions.Count <= 0) throw new ApplicationException("Error locating field"); AcroFields.FieldPosition fieldPosition = fieldPositions[0]; iTextSharp.text.Rectangle imageRect = new Rectangle(fieldPosition.position.Top, fieldPosition.position.Left, fieldPosition.position.Bottom, fieldPosition.position.Right); instanceImg.ScaleToFit(imageRect.Height, -1 * imageRect.Width); instanceImg.SetAbsolutePosition(fieldPosition.position.Left, (fieldPosition.position.Top - (instanceImg.ScaledHeight))); overContent.AddImage(instanceImg); pdfStamper.FormFlattening = true; pdfStamper.Close(); pdfReader.Close(); return filename; } 

提前致谢！

Answer 1

最后我找到了解决方案，

这是我的最终代码

  public static string MainStamping(string docname, List imagePath, string mediaField) { string filename = ConfigurationManager.AppSettings["LocalFolder"] + docname + ".pdf"; FileStream pdfOutputFile = new FileStream(filename, FileMode.Create); PdfConcatenate pdfConcatenate = new PdfConcatenate(pdfOutputFile); PdfReader result = null; for (int i = 0; i < imagePath.Count; i++) { result = CreatePDFDocument1(imagePath[i], mediaField); pdfConcatenate.AddPages(result); } pdfConcatenate.Close(); return filename; } public static PdfReader CreatePDFDocument1(string imagePath, string mediaField) { PdfReader pdfReader = null; string pdfPortrait = ConfigurationManager.AppSettings["PdfPortraitTemplate"]; string pdfLandscape = ConfigurationManager.AppSettings["PdfLandscapeTemplate"]; iTextSharp.text.Image instanceImg = iTextSharp.text.Image.GetInstance(imagePath); if ((instanceImg.ScaledHeight >= instanceImg.ScaledWidth) || (instanceImg.ScaledWidth <= 714 )) { pdfReader = new PdfReader(pdfPortrait); } else { pdfReader = new PdfReader(pdfLandscape); } MemoryStream memoryStream = new MemoryStream(); PdfStamper pdfStamper = new PdfStamper(pdfReader, memoryStream); AcroFields testForm = pdfStamper.AcroFields; testForm.SetField("MediaField", mediaField); PdfContentByte overContent = pdfStamper.GetOverContent(1); IList fieldPositions = testForm.GetFieldPositions("ImageField"); if (fieldPositions == null || fieldPositions.Count <= 0) throw new ApplicationException("Error locating field"); AcroFields.FieldPosition fieldPosition = fieldPositions[0]; iTextSharp.text.Rectangle imageRect = new Rectangle(fieldPosition.position.Top, fieldPosition.position.Left, fieldPosition.position.Bottom, fieldPosition.position.Right); instanceImg.ScaleToFit(imageRect.Height, -1 * imageRect.Width); instanceImg.SetAbsolutePosition(fieldPosition.position.Left, (fieldPosition.position.Top - (instanceImg.ScaledHeight))); overContent.AddImage(instanceImg); pdfStamper.FormFlattening = true; pdfStamper.Close(); PdfReader resultReader = new PdfReader(memoryStream.ToArray()); pdfReader.Close(); return resultReader; } 

谢谢，