Richtextbox in web application and highlighting the text 
<p>I am a beginner to web application development. I am loading some text to the text box and checking for certain errors like if occurring of space before <code>.</code>(dot/full-stop). <br>I want to display the line no, column no and cursor position of the errors. Which control is suited for this. How to find the line no,column no and cursor position and how to highlight the error text in the text box.? <br>I have heard that through <code>RichTextBox</code> it is possible, but richtextbox control is not there in web application toolbox controls list.</p>
