Convert Html to Docx in c# [closed]

Solution 1:

My solution uses Html2OpenXml along with DocumentFormat.OpenXml (NuGet package for Html2OpenXml is here) to provide an elegant solution for ASP.NET MVC.

WordHelper.cs

public static class WordHelper
{
    public static byte[] HtmlToWord(String html)
    {
        const string filename = "test.docx";
        if (File.Exists(filename)) File.Delete(filename);

        using (MemoryStream generatedDocument = new MemoryStream())
        {
            using (WordprocessingDocument package = WordprocessingDocument.Create(
                   generatedDocument, WordprocessingDocumentType.Document))
            {
                MainDocumentPart mainPart = package.MainDocumentPart;
                if (mainPart == null)
                {
                    mainPart = package.AddMainDocumentPart();
                    new Document(new Body()).Save(mainPart);
                }

                HtmlConverter converter = new HtmlConverter(mainPart);
                Body body = mainPart.Document.Body;

                var paragraphs = converter.Parse(html);
                for (int i = 0; i < paragraphs.Count; i++)
                {
                    body.Append(paragraphs[i]);
                }

                mainPart.Document.Save();
            }

            return generatedDocument.ToArray();
        }
    }
}

Controller

    [HttpPost]
    [ValidateInput(false)]
    public FileResult Demo(CkEditorViewModel viewModel)
    {
        return File(WordHelper.HtmlToWord(viewModel.CkEditorContent),
          "application/vnd.openxmlformats-officedocument.wordprocessingml.document");
    }

I'm using CKEditor to generate HTML for this sample.

Solution 2:

Below does the same thing as Luis code, but just a bit more readable and applied to an ASP.NET MVC application:

var word = new Microsoft.Office.Interop.Word.Application();
word.Visible = false;

var filePath = Server.MapPath("~/MyFiles/Html2PdfTest.html");
var savePathPdf = Server.MapPath("~/MyFiles/Html2PdfTest.pdf");
var wordDoc = word.Documents.Open(FileName: filePath, ReadOnly: false);
wordDoc.SaveAs2(FileName: savePathPdf, FileFormat: WdSaveFormat.wdFormatPDF);

you can also save in other formats such as docx like this:

var savePathDocx = Server.MapPath("~/MyFiles/Html2PdfTest.docx");
var wordDoc = word.Documents.Open(FileName: filePath, ReadOnly: false);
wordDoc.SaveAs2(FileName: savePathDocx, FileFormat: WdSaveFormat.wdFormatXMLDocument);

Solution 3:

Using that code to convert

Microsoft.Office.Interop.Word.Application word = 
    new Microsoft.Office.Interop.Word.Application();
Microsoft.Office.Interop.Word.Document wordDoc = 
    new Microsoft.Office.Interop.Word.Document();
Object oMissing = System.Reflection.Missing.Value;
wordDoc = word.Documents.Add(ref oMissing, ref oMissing, ref oMissing, ref oMissing);
word.Visible = false;
Object filepath = "c:\\page.html";
Object confirmconversion = System.Reflection.Missing.Value;
Object readOnly = false;
Object saveto = "c:\\doc.pdf";
Object oallowsubstitution = System.Reflection.Missing.Value;

wordDoc = word.Documents.Open(ref filepath, ref confirmconversion, 
    ref readOnly, ref oMissing,
    ref oMissing, ref oMissing, ref oMissing, ref oMissing,
    ref oMissing, ref oMissing, ref oMissing, ref oMissing,
    ref oMissing, ref oMissing, ref oMissing, ref oMissing);
 object fileFormat = WdSaveFormat.wdFormatPDF;
 wordDoc.SaveAs(ref saveto, ref fileFormat, ref oMissing, ref oMissing, ref oMissing,
     ref oMissing, ref oMissing, ref oMissing, ref oMissing, ref oMissing,
     ref oMissing, ref oMissing, ref oMissing, ref oallowsubstitution, ref oMissing,
     ref oMissing);

Solution 4:

The OpenXML SDK allows you to programmatically build docx documents:

OpenXml SDK Download

Solution 5:

You might consider using altChunk. See, amongst others, adding images to openxml doc created from altchunk

If you don't want to rely on Word to convert the HTML, you could try docx4j-ImportXHTML for .NET; see this walkthrough.