Hello. I'm doing a html editor.
i want a function to the html editor that change the color on the text when I press a button. Example if I write this code in the html editors textbox:
<table><tr><td bgcolor = "abc123">hello</td></tr><table>
And then I press the button would it change the text color like this:
<table><tr><td bgcolor = "abc123">hello</td></tr></table>
What code should I use for that function?

Hi, Use RichTextBox for editor. This control has SelectionColor property to change the color of the Selected Text.

But selecting should be done by you

But i want it to change the color by it self. And when i press the button would the text color change and I want it to change all the letters color inside <>.

Rich Text Box has KeyDown Event where you have to change the color by ur code when receiving '<' and '>' characters. This change the color when typing

If you want to set the color when press a button, then parse the text first, then apply the color to the text

Yes, I give simple example

private char LastChar = ' ';
    private void richTextBox1_KeyPress(object sender, KeyPressEventArgs e)
        if (LastChar == '<')
            //Turn On Red after Pressing < character
            richTextBox1.SelectionColor = Color.Red; 
        if (e.KeyChar == '>')
            //Turn Off Red Color
            richTextBox1.SelectionColor = richTextBox1.ForeColor;
        LastChar = e.KeyChar;

The above code that i posted only works when type the tags

When you want change the color by pressing button. I am not familiar with Regular Expression, still a try.
Try this

private void button1_Click(object sender, EventArgs e)
        Regex regex = new Regex(@"(<\b[^>]*>)|(</\b[^>]*>)", RegexOptions.IgnoreCase | RegexOptions.Compiled);
        for (Match match = regex.Match(richTextBox1.Text ); match.Success; match = match.NextMatch())
            richTextBox1.Select ( match.Index +1, match.Value.Length -2);
            richTextBox1.SelectionColor = Color.Red ;
            richTextBox1.DeselectAll ();
Thanks man. You solved our problem! - farooqaaa

Now I got it to work I require this line of code to:
using System.Text.RegularExpressions;

Thanks a million salva. I got it working finally.

@FullBjarne: I didn't saw Page 2. I was going to tell you to use that. :)

Thanks again salva. :)

I wonder how to make this fire a certain intervals, for example on the press of the space bar, or something. hrm.

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