Convert DOCX bytes to HTML file in C# and .NET


Complete code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using SautinSoft;

namespace Example
{
    class Program
    {
        static void Main(string[] args)
        {
            ConvertDocxToHtml();
        }
        /// <summary>
        /// Convert DOCX bytes to HTML file.
        /// </summary>
        static void ConvertDocxToHtml()
        {
            // This file is necessary to get DOCX content as byte array.
            string inpFile = @"..\..\..\example.docx";
            byte[] docxBytes = File.ReadAllBytes(inpFile);

            string outfile = Path.GetFullPath("Result.html");

            RtfToHtml r = new RtfToHtml();

            using (MemoryStream inpMS = new MemoryStream(docxBytes))
            {
                using (MemoryStream outMS = new MemoryStream())
                {
                    r.Convert(inpMS, outMS, new RtfToHtml.HtmlFixedSaveOptions() { Title = "SautinSoft Example." });
                    File.WriteAllBytes(outfile, outMS.ToArray());
                }
            }            

            // Open the result for demonstration purposes.
            System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(outfile) { UseShellExecute = true });
        }
    }
}

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Imports System
Imports System.Collections.Generic
Imports System.Linq
Imports System.Text
Imports System.IO
Imports SautinSoft

Namespace Example
	Friend Class Program
		Shared Sub Main(ByVal args() As String)
			ConvertDocxToHtml()
		End Sub
		''' <summary>
		''' Convert DOCX bytes to HTML file.
		''' </summary>
		Private Shared Sub ConvertDocxToHtml()
			' This file is necessary to get DOCX content as byte array.
			Dim inpFile As String = "..\..\..\example.docx"
			Dim docxBytes() As Byte = File.ReadAllBytes(inpFile)

			Dim outfile As String = Path.GetFullPath("Result.html")

			Dim r As New RtfToHtml()

			Using inpMS As New MemoryStream(docxBytes)
				Using outMS As New MemoryStream()
					r.Convert(inpMS, outMS, new RtfToHtml.HtmlFixedSaveOptions() With {.Title = "SautinSoft Example."})
					File.WriteAllBytes(outfile, outMS.ToArray())
				End Using
			End Using

			' Open the result for demonstration purposes.
			System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(outfile) With {.UseShellExecute = True})
		End Sub
	End Class
End Namespace

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We are developing .Net components since 2002. We know PDF, DOCX, RTF, HTML, XLSX and Images formats. If you need any assistance with creating, modifying or converting documents in various formats, we can help you. We will write any code example for you absolutely free.