Convert HTML to RTF string in C# and .NET


Complete code

using System;
using System.IO;
using SautinSoft;
using static SautinSoft.HtmlToRtf;

namespace Sample
{
    class Test
    {

        static void Main(string[] args)
        {
			// Get your free key here:   
            // https://sautinsoft.com/start-for-free/
	
            // Convert HTML string to RTF string.
            // If you need more information about "HTML to RTF .Net" 
            // Email us at: support@sautinsoft.com.
            ConvertHtmlToRtfString();
        }

        public static void ConvertHtmlToRtfString()
        {
            SautinSoft.HtmlToRtf h = new SautinSoft.HtmlToRtf();
            HtmlConvertOptions opt = new HtmlConvertOptions();
            opt.OutputFormat = HtmlToRtf.OutputFormat.Rtf;

            string inpFile = @"..\..\..\pic.html";
            string outFile = "Result.rtf";

            // Read our HTML file a string.
            string htmlString = File.ReadAllText(inpFile);
            byte[] rtfBytes = null;

            // Specify the 'BaseURL' property that component can find the full path to images, like a: <img src="..\pict.png" and
            // to external css, like a:  <link rel="stylesheet" href="/css/style.css">.
            opt.BaseURL = Path.GetDirectoryName(Path.GetFullPath(inpFile));

            var htmlBytes = System.Text.Encoding.UTF8.GetBytes(htmlString);

            if (h.Convert(htmlBytes, out rtfBytes, opt))
            {
                // Open the result for demonstration purposes.
                File.WriteAllBytes(outFile, rtfBytes);
                System.Diagnostics.Process.Start(new System.Diagnostics.ProcessStartInfo(outFile) { UseShellExecute = true });
            }
        }
    }
}

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Option Infer On

Imports System
Imports System.IO
Imports SautinSoft
Imports SautinSoft.HtmlToRtf

Namespace Sample
	Friend Class Test

		Shared Sub Main(ByVal args() As String)
			' Get your free key here:   
            ' https://sautinsoft.com/start-for-free/
	
			' Convert HTML string to RTF string.
			' If you need more information about "HTML to RTF .Net" 
			' Email us at: support@sautinsoft.com.
			ConvertHtmlToRtfString()
		End Sub

		Public Shared Sub ConvertHtmlToRtfString()
			Dim h As New SautinSoft.HtmlToRtf()
			Dim opt As New HtmlConvertOptions()
			opt.OutputFormat = HtmlToRtf.OutputFormat.Rtf

			Dim inpFile As String = "..\..\..\pic.html"
			Dim outFile As String = "Result.rtf"

			' Read our HTML file a string.
			Dim htmlString As String = File.ReadAllText(inpFile)
			Dim rtfBytes() As Byte = Nothing

			' Specify the 'BaseURL' property that component can find the full path to images, like a: <img src="..\pict.png" and
			' to external css, like a:  <link rel="stylesheet" href="/css/style.css">.
			opt.BaseURL = Path.GetDirectoryName(Path.GetFullPath(inpFile))

			Dim htmlBytes = System.Text.Encoding.UTF8.GetBytes(htmlString)

			If h.Convert(htmlBytes, rtfBytes, opt) Then
				' Open the result for demonstration purposes.
				File.WriteAllBytes(outFile, rtfBytes)
				System.Diagnostics.Process.Start(New System.Diagnostics.ProcessStartInfo(outFile) With {.UseShellExecute = True})
			End If
		End Sub
	End Class
End Namespace

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