HtmlEntities

HtmlEntities#region GetOnlyTextFromHtmlCode + RemoveHtmlChars + RemoveTagFromHtmlCode /// <summary> /// http://www.codePRoject.com/script/Content/ViewAssociatedFile.aspx?rzp=%2FKB%2Fedit%2FZetaHtmlEditControl%2F%2FZetaHtmlEditControl-Source.zip&zep=Control%2FHtmlEditControl.cs&obid=43954&obtid=2&ovid=13 /// </summary> /// <param name="htmlCode"></param> /// <returns></returns> private static string getOnlyTextFromHtmlCode(string htmlCode) { //<br> htmlCode = htmlCode.Replace("\r\n", @" "); htmlCode = htmlCode.Replace("\r", @" "); htmlCode = htmlCode.Replace("\n", @" "); htmlCode = htmlCode.Replace(@"</p>", Environment.NewLine + Environment.NewLine); htmlCode = htmlCode.Replace(@"</P>", Environment.NewLine + Environment.NewLine); //html comment htmlCode = Regex.Replace( htmlCode, @"<!--.*?-->", string.Empty, RegexOptions.Singleline | RegexOptions.IgnoreCase); //<p> htmlCode = Regex.Replace(htmlCode, @"<br[^>]*>", Environment.NewLine, RegexOptions.Singleline | RegexOptions.IgnoreCase); //tags htmlCode = removeTagFromHtmlCode(@"style", htmlCode); htmlCode = removeTagFromHtmlCode(@"script", htmlCode); //html htmlCode = Regex.Replace( htmlCode, "<(.|\n)+?>", string.Empty, RegexOptions.Singleline | RegexOptions.IgnoreCase); //umlaute htmlCode = unescapeHtmlEntities(htmlCode); //whitespaces htmlCode = Regex.Replace( htmlCode, @" +", @" ", RegexOptions.Singleline | RegexOptions.IgnoreCase); return htmlCode; } /// <summary> /// http://dev.w3.org/html5/html-author/charref /// </summary> /// <param name="htmlCode"></param> /// <returns></returns> private static string unescapeHtmlEntities(string htmlCode) {

htmlCode = htmlCode.Replace(@"&nbsp;", @" ");

htmlCode = htmlCode.Replace(@"&Auml;", @"ä"); htmlCode = htmlCode.Replace(@"&absp;", @""); htmlCode = htmlCode.Replace(@"&obsp;", @""); htmlCode = htmlCode.Replace(@"&Obsp;", @""); htmlCode = htmlCode.Replace(@"&ubsp;", @""); htmlCode = htmlCode.Replace(@"&Ubsp;", @""); htmlCode = htmlCode.Replace(@"&szlig;", @"ß");

htmlCode = htmlCode.Replace(@"&pound;", @"£"); htmlCode = htmlCode.Replace(@"&sect;", @"§"); htmlCode = htmlCode.Replace(@"&copy;", @"©"); htmlCode = htmlCode.Replace(@"&reg;", @"®"); htmlCode = htmlCode.Replace(@"&micro;", @"µ"); htmlCode = htmlCode.Replace(@"&para;", @"¶"); htmlCode = htmlCode.Replace(@"&Oslash;", @"Ø"); htmlCode = htmlCode.Replace(@"&oslash;", @"Ø"); htmlCode = htmlCode.Replace(@"&divide;", @"÷"); htmlCode = htmlCode.Replace(@"&times;", @"×");

return htmlCode; } private static string removeTagFromHtmlCode( string tag, string htmlCode) { return Regex.Replace( htmlCode, string.Format(@"<{0}.*?</{1}>", tag, tag), string.Empty, RegexOptions.Singleline | RegexOptions.IgnoreCase); } #endregion