How to Convert HTML to RTF and RTF to HTML in asp.net

Question

Please tell me how to convert html to rtf and rtf to html with or without dll componenet in asp.net

Kimberlee Lowe · Answer

Hi tayyab, you can check out a Word's DLL for .NET framework . It can both read and write RTF files in C# and the same goes for the HTML files. For example check out this article that shows a rather simple way how to achieve a C# conversion between a HTML and Word files . You can use the same approach, the only difference would be that your input and output files need to end with an .RTF extension.

Anuja Pawar · Answer

Refer this article at code project. Hope it helps http://www.codeproject.com/KB/HTML/XHTML2RTF.aspx

Gohil Jayendrasinh · Answer

i found code from web public static string ConvertHtmlToText(string source) { string result; // Remove HTML Development formatting // Replace line breaks with space // because browsers inserts space result = source.Replace("", " "); // Replace line breaks with space // because browsers inserts space result = result.Replace("
", " "); // Remove step-formatting result = result.Replace("	", string.Empty); // Remove repeating speces becuase browsers ignore them result = System.Text.RegularExpressions.Regex.Replace(result, @"( )+", " "); // Remove the header (prepare first by clearing attributes) result = System.Text.RegularExpressions.Regex.Replace(result, @" ])*>", " ", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"( )", " ", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, "( ).*( )", string.Empty, System.Text.RegularExpressions.RegexOptions.IgnoreCase); // remove all scripts (prepare first by clearing attributes) result = System.Text.RegularExpressions.Regex.Replace(result, @" ])*>", " ", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"( )", " ", System.Text.RegularExpressions.RegexOptions.IgnoreCase); //result = System.Text.RegularExpressions.Regex.Replace(result, // @"( )([^( \. )])*( )", // string.Empty, // System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"( ).*( )", string.Empty, System.Text.RegularExpressions.RegexOptions.IgnoreCase); // remove all styles (prepare first by clearing attributes) result = System.Text.RegularExpressions.Regex.Replace(result, @" ])*>", " ", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"( )", " ", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, "( ).*( )", string.Empty, System.Text.RegularExpressions.RegexOptions.IgnoreCase); // insert tabs in spaces of tags result = System.Text.RegularExpressions.Regex.Replace(result, @" ])*>", "	", System.Text.RegularExpressions.RegexOptions.IgnoreCase); // insert line breaks in places of and tags result = System.Text.RegularExpressions.Regex.Replace(result, @" ", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @" ", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase); // insert line paragraphs (double line breaks) in place // if , and tags result = System.Text.RegularExpressions.Regex.Replace(result, @" ])*>", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @" ])*>", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @" ])*>", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase); // Remove remaining tags like , links, images, // comments etc - anything thats enclosed inside result = System.Text.RegularExpressions.Regex.Replace(result, @" ]*>", string.Empty, System.Text.RegularExpressions.RegexOptions.IgnoreCase); // replace special characters: result = System.Text.RegularExpressions.Regex.Replace(result, @" ", " ", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"&bull;", " * ", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"&lsaquo;", " System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"&rsaquo;", ">", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"&trade;", "(tm)", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"&frasl;", "/", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @" System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @">", ">", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"&copy;", "(c)", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, @"&reg;", "(r)", System.Text.RegularExpressions.RegexOptions.IgnoreCase); // Remove all others. More can be added, see // http://hotwired.lycos.com/webmonkey/reference/special_characters/ result = System.Text.RegularExpressions.Regex.Replace(result, @"&(.{2,6});", string.Empty, System.Text.RegularExpressions.RegexOptions.IgnoreCase); // make line breaking consistent result = result.Replace("
", ""); // Remove extra line breaks and tabs: // replace over 2 breaks with 2 and over 4 tabs with 4. // Prepare first to remove any whitespaces inbetween // the escaped characters and remove redundant tabs inbetween linebreaks result = System.Text.RegularExpressions.Regex.Replace(result, "()( )+()", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, "(	)( )+(	)", "		", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, "(	)( )+()", "	", System.Text.RegularExpressions.RegexOptions.IgnoreCase); result = System.Text.RegularExpressions.Regex.Replace(result, "()( )+(	)", "	", System.Text.RegularExpressions.RegexOptions.IgnoreCase); // Remove redundant tabs result = System.Text.RegularExpressions.Regex.Replace(result, "()(	)+()", "", System.Text.RegularExpressions.RegexOptions.IgnoreCase); // Remove multible tabs followind a linebreak with just one tab result = System.Text.RegularExpressions.Regex.Replace(result, "()(	)+", "	", System.Text.RegularExpressions.RegexOptions.IgnoreCase); // Initial replacement target string for linebreaks string breaks = ""; // Initial replacement target string for tabs string tabs = "					"; for (int index = 0; index result = result.Replace(breaks, ""); result = result.Replace(tabs, "				"); breaks = breaks + ""; tabs = tabs + "	"; } // Thats it. return result; } or link http://blogs.msdn.com/b/matt/archive/2009/09/28/converting-rtf-to-html.aspx

How to Convert HTML to RTF and RTF to HTML in asp.net

Answers (3)