C＃コンソールアプリケーションのpdfのすべてのページにイメージを挿入する方法

Question

イメージをPDFに挿入するためのC＃コンソールアプリケーションを作成しましたが、このコードはPDFの最初のページにのみ挿入します。 私はいくつかのソリューションをオンラインで見つけましたが、そのほとんどはコンソールアプリケーションではなくウェブ指向です。彼らを試したが、うまくいかなかった。ここに私のコードは次のとおりです。

void InsertImageToPdf(string sourceFileName, string imageFileName, string newFileName) 
    { 
     using (Stream pdfStream = new FileStream(sourceFileName, FileMode.Open)) 
     using (Stream imageStream = new FileStream(imageFileName, FileMode.Open)) 
     using (Stream newpdfStream = new FileStream(newFileName, FileMode.Create, FileAccess.ReadWrite)) 
     { 

      PdfReader pdfReader = new PdfReader(pdfStream); 
      PdfStamper pdfStamper = new PdfStamper(pdfReader, newpdfStream); 
      PdfContentByte pdfContentByte = pdfStamper.GetOverContent(1); 
      iTextSharp.text.Image image = iTextSharp.text.Image.GetInstance(imageStream); 

      image.SetAbsolutePosition(0, 100); 
      image.ScaleAbsolute(222, 222); 
      pdfContentByte.AddImage(image); 


      pdfStamper.Close(); 


     } 
    } 

Answer 1

次のコードはITextSharpはありませんが、それはゆうがnugetを介して適切なパッケージをインストールすることができ

class Program 
{ 
    static void Main(string[] args) 
    { 
     PdfCommon.Initialize(); 
     InsertImage(); 
    } 

    static private void InsertImage() 
    { 
     //Load bitmap from file and insert it into page 
     using (var bmp = Bitmap.FromFile(@"d:\0\img1.png") as Bitmap) 
     { 
      using (var doc = PdfDocument.Load(@"d:\0\test_big.pdf")) 
      { 
       foreach (var page in doc.Pages) 
       { 
        var image = InsertImageToPage(doc, page, bmp, new PointF(0, 0)); 
        //Insert image into page dictionary 
        InsertIntoDictionary(doc, page, image); 
       } 
       //Save document 
       doc.Save(@"d:\0\6\modified_facture.pdf", SaveFlags.NoIncremental); 
      } 
     } 
    } 

    static public PdfImageObject InsertImageToPage(PdfDocument doc, PdfPage page, System.Drawing.Bitmap bmp, PointF atPoint) 
    { 
     var bi = bmp.LockBits(
      new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height), 
      System.Drawing.Imaging.ImageLockMode.ReadOnly, 
      System.Drawing.Imaging.PixelFormat.Format32bppArgb); 

     //Create PdfBitmap object from .Net bitmap 
     var bitmap = new PdfBitmap(
      bmp.Width, 
      bmp.Height, 
      BitmapFormats.FXDIB_Argb, 
      bi.Scan0, 
      bi.Stride); 

     //Create pdf image object and then set PdfBitmap object into it. 
     var image = PdfImageObject.Create(doc); 
     image.SetBitmap(bitmap); 

     //Scale image object to it's actual width and heihgt 
     image.SetMatrix(bmp.Width, 0, 0, bmp.Height, (float)atPoint.X, (float)atPoint.Y); 

     page.PageObjects.InsertObject(image); 
     bmp.UnlockBits(bi); 
     return image; 
    } 

    static private void InsertIntoDictionary(PdfDocument doc, PdfPage page, PdfImageObject image) 
    { 
     //Get page dictionary, list of indirect objects and original page content 
     var pageDict = page.Dictionary; 
     var list = PdfIndirectList.FromPdfDocument(doc); 

     //Convert contents to array. 
     PdfTypeArray array = ConvertContentsToArray(pageDict["Contents"], list, pageDict); 

     //Get stream of image. 
     IntPtr streamHandle = Pdfium.FPDFImageObj_GenerateStream(image.Handle, page.Handle); 
     var stream = PdfTypeStream.Create(streamHandle); 

     //Add image's stream into list of indirect objects and then add it to array. 
     int num = list.Add(stream); 
     array.AddIndirect(list, num); 
    } 

    static private PdfTypeArray ConvertContentsToArray(PdfTypeBase contents, PdfIndirectList list, PdfTypeDictionary pageDict) 
    { 
     //check the original content whether it's an array 
     if (contents is PdfTypeArray) 
      return contents as PdfTypeArray; //if contents is a array just return it 
     else if (contents is PdfTypeIndirect) 
     { 
      if ((contents as PdfTypeIndirect).Direct is PdfTypeArray) 
       return (contents as PdfTypeIndirect).Direct as PdfTypeArray; //if contents is a reference to array then return that array 
      else if ((contents as PdfTypeIndirect).Direct is PdfTypeStream) 
      { 
       //if contents is a reference to a stream then create a new array and insert stream as a first element of array 
       var array = PdfTypeArray.Create(); 
       array.AddIndirect(list, (contents as PdfTypeIndirect).Direct); 
       //Add array into list of indirect objects 
       list.Add(array); 
       //And set it as a contents of the page 
       pageDict.SetIndirectAt("Contents", list, array); 
       return array; 
      } 
      else 
       throw new Exception("Unexcpected content type"); 
     } 
     else 
      throw new Exception("Unexcpected content type"); 
    } 
} 

100％であなたのタスクを解決します： インストール・パッケージをpdfium.netを.sdk