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code highlight syntax

, 31 Aug 2010
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small example to show how to used Regular Expressions for code highlight
this is small example to show how to used Regular Expressions for code highlight
Using the code
you can download the example or used this code
here link to download:[^]
if you want to use the code
in the first you should add richtext to the form
 using System.Text.RegularExpressions;
private void richTextBox1_TextChanged(object sender, EventArgs e)
              string tokens = "(auto|double|int|struct|break|else|long|switch|case|enum|register|typedef|char|extern|return|union|const|float|short|unsigned|continue|for|signed|void|default|goto|sizeof|volatile|do|if|static|while)";
    Regex rex = new Regex(tokens);
    MatchCollection mc = rex.Matches(richTextBox1.Text);
    int StartCursorPosition = richTextBox1.SelectionStart;
    foreach (Match m in mc)
        int startIndex = m.Index;
        int StopIndex = m.Length;
        richTextBox1.Select(startIndex, StopIndex);
        richTextBox1.SelectionColor = Color.Blue;
        richTextBox1.SelectionStart = StartCursorPosition;
        richTextBox1.SelectionColor = Color.Black;



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About the Author

Moustafa Farhat
Software Developer (Senior) syrian developers
Syrian Arab Republic Syrian Arab Republic
hello , I am software and web developer , I believe that i have to share my knowledge with others.
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Comments and Discussions

Generalhere link to download: Pinmemberck47ht20-Apr-11 4:32 
GeneralReason for my vote of 1 Simply awful. Don't try this at home... PinmemberToli Cuturicu2-Sep-10 9:03 
GeneralReason for my vote of 1 Tons of error and don't really give ... PinmemberSimon Dufour31-Aug-10 5:44 
GeneralI guess it's not a bad start but prehaps you should also che... PinmemberSimon Dufour31-Aug-10 4:01 

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