RTF/Regex Question

[Mike Hankey]

Hello, I'm trying to highlight selected text in a RichTextBox Control. I want to do this by using the RTF control code \cbn where n = index. As I understand you prefix the selected text with a \cbn code to change the background color to the highlight color then Postfix it with another \cbn code to reset color back. See COMMENT BELOW for full description //RTF Color codes with indices into Color Table private const string clrDefault = @"\cf1 "; private const string clrKeyword = @"\cf2 "; private const string clrLiteral = @"\cf3 "; private const string clrOutlining = @"\cf4 "; private const string clrComment = @"\cf5 "; private const string clrSelect = @"\cf6 "; //The actual individual entries in the Coor Table protected static string colorDefault = @"\red0\green0\blue0;"; protected static string colorKeyword = @"\red15\green0\blue255;"; protected static string colorLiteral = @"\red200\green105\blue36;"; protected static string colorOutlining = @"\red27\green175\blue78;"; protected static string colorComment = @"\red160\green160\blue160;"; protected static string colorSelect = @"\red90\green90\blue90;"; //Code to build the Color Table string protected static string rtfColorTable = @"{\colortbl ;" + colorDefault + colorKeyword + colorLiteral + colorOutlining + colorComment + colorSelect + @"}"; public static void HighlightSelection(RichTextBox rtb, string selTxt) { string result = rtb.Rtf; //Replaces existing colorTable with mine result = CreateColorTable(result); Regex r = new Regex(selTxt); // COMMENT BELOW //If I use clrSelect + selText + clrDefault // i.e. @"\cf6 " + selText + @"\cf1 " //The proper keywords foreColor changes to gray. //But when I use the \cbn equiv. it doesn't?? result = r.Replace( result, @"\cb6 " + selTxt + @"\cb1 "); rtb.Rtf = result; } Thanks for your time! Mike P.S. Does anyone know a good Regex reference?

Light travels faster than sound. That's why some people appear right until you hear them speak.

[subrata jana]

http://www.ultrapico.com/Expresso.htm Download the tool , its a tool to test regular expression and with few example of regex

[Mike Hankey]

Thanks for the link...Expresso is much better than the one I was using. Thanks Mike

Light travels faster than sound. That's why some people appear right until you hear them speak.