Ok, thank you very much.
I will try the string larger then 255, but is there any way to read large file?

The secound thing is how can i know the line and column that the cursor is standing at (like in VB editer, where-ever you sand it's how you the line no. and column).

P.S.
Do you know any Text box control that know to show colored text like in VB editer?

Thank you very much
Kiron