How to Add a PDF with first page preview in Word document .NET Core?

Syncfusion® Essential® DocIO is a .NET Word library used to create, read, edit, and convert Word documents programmatically without Microsoft Word or interop dependencies. Using this library, you can add a PDF as an OLE object with a first-page preview in a Word document using C#.

Steps to add a PDF as an OLE object with first page preview in Word document:

1. Create a new .NET Core console application project.
   

   

2. Install the Syncfusion.DocIO.Net.Core NuGet package as a reference to your project from NuGet.org.
   

   

3. Install the Syncfusion.EJ2.PdfViewer.AspNet.Core NuGet package as a reference to your project from NuGet.org.
   

   

4. Include the following namespaces in the Program.cs file
   C#

using Syncfusion.DocIO;
using Syncfusion.DocIO.DLS;
using Syncfusion.EJ2.PdfViewer;

5. Use the following code example to add a PDF as an OLE object with a first-page preview in a Word document.
   C#

// Open the Word document template file in read/write mode
using (FileStream fileStream = new FileStream(Path.GetFullPath(@"Data/Template.docx"), FileMode.Open, FileAccess.ReadWrite))
{
   // Load the Word document into a Syncfusion DocIO instance
   using (WordDocument document = new WordDocument(fileStream, FormatType.Automatic))
   {
       // Open the PDF file that will be inserted as an OLE object
       FileStream pdfFileStream = new FileStream(Path.GetFullPath(@"Data/Adventure.pdf"), FileMode.Open, FileAccess.Read);
       // Extract the first page of the PDF as an image (to use as a preview)
       byte[] extractedImages = GetPDFFirstPageasImage(pdfFileStream);
   	
       // Create a picture instance to hold the extracted image
       WPicture picture = new WPicture(document);
       picture.LoadImage(extractedImages);
   	
       // Create a bookmark navigator to locate the target bookmark in the document
       BookmarksNavigator bookmarkNavigator = new BookmarksNavigator(document);
       // Move to the bookmark named "OLEObject" where the PDF will be inserted
       bookmarkNavigator.MoveToBookmark("OLEObject");
       // Get the content within the bookmark and clear it
       TextBodyPart textBodyPart = bookmarkNavigator.GetBookmarkContent();
       textBodyPart.BodyItems.Clear();
   	
       // Create a new paragraph to hold the OLE object
       WParagraph paragraph = new WParagraph(document);
       textBodyPart.BodyItems.Add(paragraph);
       // Reopen the PDF file stream (because it was read earlier and may be at the end)
       pdfFileStream = new FileStream(Path.GetFullPath(@"Data/Adventure.pdf"), FileMode.Open, FileAccess.Read);
       // Insert the PDF file as an OLE object within the paragraph
       WOleObject oleObject = paragraph.AppendOleObject(pdfFileStream, picture, OleObjectType.AdobeAcrobatDocument);
       // Dispose of the PDF file stream after use to free resources
       pdfFileStream.Dispose();
       // Set the display size of the OLE object in the document
       oleObject.OlePicture.Height = 200;
       oleObject.OlePicture.Width = 200;
   	
       // Replace the bookmark's content with the new text body part containing the OLE object
       bookmarkNavigator.ReplaceBookmarkContent(textBodyPart);
   	
       // Create a file stream to save the modified document
       using (FileStream outputStream = new FileStream(Path.GetFullPath(@"Output/Result.docx"), FileMode.Create, FileAccess.ReadWrite))
       {
           // Save the modified Word document to the output file
           document.Save(outputStream, FormatType.Docx);
       }
   }
}

6. Use the following code example to extract the first page of a PDF as an image.
   C#

private static byte[] GetPDFFirstPageasImage(FileStream pdfFileStream)
{
    using (PdfRenderer pdfRenderer = new PdfRenderer())
    {
        // Load the PDF file into the renderer
        pdfRenderer.Load(pdfFileStream);

        // Export the first page of the PDF as an image
        using (SKBitmap bitmapimage = pdfRenderer.ExportAsImage(0))
        using (SKImage image = SKImage.FromBitmap(bitmapimage))
        using (SKData imageData = image.Encode(SKEncodedImageFormat.Png, 100))
        {
            // Convert the image to a byte array and return it
            return imageData.ToArray();
        }
    }
} 

You can download a complete working sample to add a PDF as an OLE object with a first-page preview in a Word document from the GitHub.

Take a moment to peruse the documentation where you can find basic Word document processing options along with the features like mail merge, merge, split, and compare Word documents, find and replace text in the Word document, protect the Word documents, and most importantly, the PDF and Image conversions with code examples.

See Also

• Working with Bookmarks
• Working with OLE Objects
• Convert PDF page as Image

Conclusion

I hope you enjoyed learning about how to add a PDF as an OLE object with a first-page preview in a .NET Core Word document.

You can refer to our ASP.NET Core DocIO feature tour page to know about its other groundbreaking feature representations and documentation, and how to quickly get started with configuration specifications. You can also explore our ASP.NET Core DocIO example to understand how to create and manipulate data.

For current customers, you can check out our components from the License and Downloads page. If you are new to Syncfusion®, you can try our 30-day free trial to check out our other controls.

If you have any queries or require clarifications, please let us know in the comments section below. You can also contact us through our support forums, Direct-Trac, or feedback portal. We are always happy to assist you!