Formatting highlighted text in textbox

[shahab]

I want to change many aspects of a TextBox1.Text that has been highlighted by a user. Like a HTML editor but in ASP.NET,FOR EXAMPLE USER CHOOSES A PART OF THE TEXT HAS BEEN SHOWN IN TEXTBOX, Then he press a button finally he has a bold or …(formatted) text.
Code:
private void ImageButton1_Click(object sender, System.Web.UI.ImageClickEventArgs e)
{
TextBox1.Text="<strong>"+TextBox1.Text+"</strong> ";
}
What are your suggestions?
Thanks.

 

[kahlua001]

TextBox1.CssClass = "myCSSClass"

Then in your

<style>
.myCSSClass {font-weight:bold}
</style>

 

[shahab]

Thanks.SO great.Can you Introduce an article about cssClass
Properties?

 

[PlausiblyDamp]

http://www.w3schools.com/css/default.asp

 

[shahab]

Dear PlausiblyDamp,
This is the CSS Powe but Editor is sth else!
I like to program an editor exactly like this site but in asp.net not php.
Thanks to your help