Does anyone know of a good way to format text like if the user types the word yes turn it blue and if the user types no turn it red, or if they type a number turn it brown? I was going to use a rich text box and just check it in the TextChanged section but my problem is to change the color or size or what not i would have to select the text. So what it is kind of like is like visual basic or C++ how do those programs change the text on the fly? And also how do they put those ~~~~~~ wavy lines below the problem areas like microsoft word does when you spell something wrong?