add html content in existing docx file using openxml in C#

Question

How do I add/append HTML content in an existing .docx file, using OpenXML in asp.net C#?

In an existing word file, I want to append the html content part. For example:

In this example, I want to place "This is a Heading" inside a H1 tag.

Here its my code

protected void Button1_Click(object sender, EventArgs e)
    {

        try
        {
            using (WordprocessingDocument doc = WordprocessingDocument.Open(@"C:\Users\admin\Downloads\WordGenerator\WordGenerator\FTANJS.docx", true))
            {
                string altChunkId = "myId";
                MainDocumentPart mainDocPart = doc.MainDocumentPart;

                var run = new Run(new Text("test"));
                var p = new Paragraph(new ParagraphProperties(new Justification() { Val = JustificationValues.Center }), run);

                var body = mainDocPart.Document.Body;
                body.Append(p);


                MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes("<html><head></head><body><h1>HELLO</h1></body></html>"));

                // Uncomment the following line to create an invalid word document.
                // MemoryStream ms = new MemoryStream(Encoding.UTF8.GetBytes("<h1>HELLO</h1>"));

                // Create alternative format import part.
                AlternativeFormatImportPart formatImportPart =
                   mainDocPart.AddAlternativeFormatImportPart(
                      AlternativeFormatImportPartType.Html, altChunkId);
                //ms.Seek(0, SeekOrigin.Begin);

                // Feed HTML data into format import part (chunk).
                formatImportPart.FeedData(ms);
                AltChunk altChunk = new AltChunk();
                altChunk.Id = altChunkId;

                mainDocPart.Document.Body.Append(altChunk);
            }
        }
        catch (Exception ex)
        {

            ex.ToString ();
        }


    }

Only information are not enough. please share your code with us. — Jitendra G2
– Jitendra G2, Commented Sep 20, 2018 at 10:47
Please add the code you have attempted so far and tell us where you got stuck. — Rik Sportel
– Rik Sportel, Commented Sep 20, 2018 at 13:27
code are added now the code is running but no output of this code html tag part are not added in my existing document FTANJS.docx file how to add the html part in word documnet — ASIF SHAIKH
– ASIF SHAIKH, Commented Sep 20, 2018 at 13:33

Victor Xie · Accepted Answer · 2018-09-20 13:49:14Z

Add HTML content as Chunk should work, and you are almost there.

If I understand the question properly, this code should work.

        //insert html content to H1 tag
        using(WordprocessingDocument fDocx = WordprocessingDocument.Open(sDocxFile,true))
        {
            string sChunkID = "myhtmlID";
            AlternativeFormatImportPart oChunk = fDocx.MainDocumentPart.AddAlternativeFormatImportPart(AlternativeFormatImportPartType.Html, sChunkID);
            using(FileStream fs = File.Open(sHtml,FileMode.OpenOrCreate))
            {
                oChunk.FeedData(fs);
            }
            AltChunk oAltChunk = new AltChunk();
            oAltChunk.Id =sChunkID ;

            //insert html to the tag of 'H1' and remove H1.
            Body body = fDocx.MainDocumentPart.Document.Body;
            Paragraph theParagraph = body.Descendants<Paragraph>().Where(p => p.InnerText == "H1").FirstOrDefault();
            theParagraph.InsertAfterSelf<AltChunk>(oAltChunk);
            theParagraph.Remove();

            fDocx.MainDocumentPart.Document.Save();
        }

Terry Carmen · Accepted Answer · 2018-09-20 17:11:40Z

-2

The short answer is "You can't add HTML to a docx file".

Docx is an open format defined here. If you're using the Microsoft version they have a number of extensions.

In any case, the file contains XML, not HTML and you can't simply add HTML to a docx file. There are styles and formatting objects and pointers that all need to be updated.

If you need to modify a docx file and don't want to do a lot of research and a lot of coding, you'll need to find an existing library to work with.

edited Sep 20, 2018 at 17:11

answered Sep 20, 2018 at 13:35

Terry Carmen

3,9001 gold badge19 silver badges32 bronze badges

3 Comments

ASIF SHAIKH Over a year ago

so what i am using add/append html content in existing docx file any link ??

Terry Carmen Over a year ago

@ASIFSHAIKH I don't have any specific recommendations. You would need to google it and find one you like.

Nick Gallimore Over a year ago

You literally can though see Victor Xie's answer

Collectives™ on Stack Overflow

add html content in existing docx file using openxml in C#

2 Answers 2

Comments

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related