Replace word by byte array image in .net

Aspose.Words Product Family
1

I have a base 64 image that I’m fetching from the database and I want to replace some text in my docx for this generated image.
Could you show me how to do this?

3

@anemam you can use the Replace method provided by the API and alter it behavior to replace the text with an image (in this case I used the InsertImage method of DocumentBuilder class). Please check the following example:

Document doc = new Document("C:\\Temp\\input.docx");

FileStream image = File.OpenRead("C:\\Temp\\img.png");

// You dont need this because your image is actually a byte array
byte[] byteImage = ReadFully(image);

ReplaceWithImageHandler findElem = new ReplaceWithImageHandler(byteImage);

FindReplaceOptions opt = new FindReplaceOptions()
{
    ReplacingCallback = findElem,
    Direction = FindReplaceDirection.Backward,
};

doc.Range.Replace("##image", string.Empty, opt);

doc.Save("C:\\Temp\\output.docx");

public class ReplaceWithImageHandler : IReplacingCallback
{
    private readonly byte[] _image;

    public ReplaceWithImageHandler(byte[] image)
    {
        _image = image;
    }

    ReplaceAction IReplacingCallback.Replacing(ReplacingArgs args)
    {
        DocumentBuilder builder = new DocumentBuilder((Document)args.MatchNode.Document);
        builder.MoveTo((Run)args.MatchNode);
        // You can use the breaks or not
        //builder.InsertBreak(BreakType.ParagraphBreak);
        builder.InsertImage(_image);
        //builder.InsertBreak(BreakType.ParagraphBreak);

        return ReplaceAction.Replace;
    }
}

img.png (5.3 KB)
input.docx (14.9 KB)
output.docx (18.3 KB)

4

Perfect! This worked correctly for me.

1 Like
5

One more question, this insert worked for me, but when I insert the image and save it in PDF it doesn’t bring the complete image, follow the attached examples.

What could this be?

TesteAssinatura (1).docx (19.6 KB)
TesteAssinatura (1).pdf (24.2 KB)

6

@anemam Sorry, could you please mark the part of the image that is missing? I am seeing the same image in the docx file and the PDF (opened with Adobe and Google Chrome).

I selected the image in Adobe for reference.
Also, make sure that you are viewing your result on a proper monitor. The color of the image is almost white and may blend with the background if your monitor doesn’t offer sufficient contrast and color accuracy. In my case, I can see the image on two of my monitors, but it is completely missed on the third one of lower quality.

7

@anemam This thread is turning into a copy of this one: Save in PDF aspose words not working - #7 by eduardo.canal. So, let’s please continue there to avoid duplication.

8

Perfect, continue there.

1 Like